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泸州烤烟养分管理的关键技术参数研究 认领
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作者 李君 张云贵 +6 位作者 谢强 刘青丽 李志宏 李健铭 张永辉 夏建华 郭仕平 《中国土壤与肥料》 CAS CSCD 北大核心 2020年第2期100-106,共7页
采用大田试验,以云烟87为材料,在四川泸州烟区开展了氮肥4水平、磷钾肥2个水平的田间试验,研究了氮、磷、钾肥配施对烤烟生长、养分吸收分配和利用率的影响。结果表明,随着施氮量的增加,烟株及各部位干物质累积和氮磷钾累积呈先升后降... 采用大田试验,以云烟87为材料,在四川泸州烟区开展了氮肥4水平、磷钾肥2个水平的田间试验,研究了氮、磷、钾肥配施对烤烟生长、养分吸收分配和利用率的影响。结果表明,随着施氮量的增加,烟株及各部位干物质累积和氮磷钾累积呈先升后降的趋势,在施氮量为90 kg/hm^2时达最大值;氮、磷、钾养分对烟株干物质累积和分配以及养分吸收的影响程度为磷>氮>钾;氮肥的偏生产力符合"报酬递减"规律,表观利用率和农学利用率随施氮量的增加呈"先升后降"的趋势,施氮量在90 kg/hm^2时利用率最高;氮、磷、钾最大积累速率分别出现在移栽后71、59、69 d;最高产量施氮量为79.5 kg/hm^2,最高产量为1969.4 kg/hm^2,最高经济效益施氮量为69.5 kg/hm^2,此时达到的产量为1956.1 kg/hm^2。每生产100 kg干烟叶,最优施肥处理需要的氮、磷、钾纯养分量分别为5.1、0.9、8.1 kg。泸州烟区土壤养分含量很高,根据氮肥效应函数和当地烟叶均价,当地推荐施氮量为69.5~79.5 kg/hm^2。 展开更多
关键词 施肥 烤烟 养分管理 养分吸收 肥料利用率 肥料效应函数
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种粮农户化肥施用技术效率及其影响因素——基于河南省西华县调研数据 认领
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作者 孙芳玲 《武汉工程职业技术学院学报》 2020年第1期38-43,共6页
化肥过量施用是造成农业面源污染的主要原因,为化肥减量增效提供切实可行的建议,基于河南省西华县360个农户的调研数据,采用随机前沿生产函数(SFA),估计农业生产效率和化肥投入的单一要素技术效率,并利用Tobit模型分析化肥技术效率的影... 化肥过量施用是造成农业面源污染的主要原因,为化肥减量增效提供切实可行的建议,基于河南省西华县360个农户的调研数据,采用随机前沿生产函数(SFA),估计农业生产效率和化肥投入的单一要素技术效率,并利用Tobit模型分析化肥技术效率的影响因素。结果表明:小麦平均生产效率为0.842,化肥投入的技术效率为0.3444,即在当前投入不变的情况下可降低化肥投入量的66%,小麦产出不变。农户文化程度、务农劳动力占比和经营面积对化肥施用的技术效率有显著的正面影响作用,农业收入占比、土地细碎化程度对化肥施用技术效率的提升有显著的负面影响。 展开更多
关键词 技术效率 农户 化肥 化肥施用 农民 化肥效率 河南省
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Development and Application of Special Fertilizer for Crops in Guangxi Region 认领
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作者 Wei HUANG Meiling LU +2 位作者 Xin LIANG Yulin ZHU Daobo WANG 《气象与环境研究:英文版》 CAS 2020年第2期87-89,共3页
Different crops need different kinds of nutrients. In this paper,formula of special fertilizer for common field crops in Guangxi is explored from the angle of grain crops,fruits,vegetables,sugar crops,oil crops,etc.,a... Different crops need different kinds of nutrients. In this paper,formula of special fertilizer for common field crops in Guangxi is explored from the angle of grain crops,fruits,vegetables,sugar crops,oil crops,etc.,and corresponding production equipment and methods are provided,which could convenience for agricultural precision fertilization and theoretical basis and technical reference for cost saving and efficiency increasing of fertilizer. 展开更多
关键词 Special FERTILIZER for CROPS Field CROPS Agricultural precision FERTILIZATION Cost SAVING and efficiency increasing of FERTILIZER
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Chemically Precipitated Struvite Dissolution Dynamics over Time in Various Soil Textures 认领
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作者 Ryder Anderson Kristofor R. Brye +1 位作者 Lauren Greenlee Edward Gbur 《农业科学(英文)》 2020年第6期567-591,共25页
Phosphorus (P) is a fundamental nutrient in agricultural production and is one of three major components in common fertilizers. The majority of fertilizer-P sources are derived from phosphorus rock (PR), which has fin... Phosphorus (P) is a fundamental nutrient in agricultural production and is one of three major components in common fertilizers. The majority of fertilizer-P sources are derived from phosphorus rock (PR), which has finite abundance;thus a sustainable source of P is imperative for future agricultural productivity. A potential sustainable P source may be the recovery of the mineral struvite (MgNH<sub>4</sub>PO<sub>4</sub>·6H<sub>2</sub>O) from wastewater treatment plant effluent, but struvite behavior in soils of varying texture is not well characterized. The objective of this study was to assess the dissolution dynamics of a commercially available, wastewater-recovered struvite product over time in a plant-less, moist-soil incubation experiment with multiple soil textures. Chemically precipitated struvite (Crystal Green;CG) from municipal wastewater in pelletized and finely ground forms were added to soil cups at a rate of 24.5 kg<span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span></span>P<span style="white-space:nowrap;"><span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span></span>ha<sup><span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8722;</span></span>1</sup> containing soils of varying texture (<em>i.e</em>. loam, silty clay loam, and two different silt loams) from agricultural field sites in Arkansas. Soil cups were destructively sampled five times over a 6-month period to examine the change in water-soluble (WS) and weak-acid-extractable (WAE) P, K, Ca, Mg, and Fe concentrations from their initial concentration. After 0.5 months, both WS-P and WAE-P concentrations increased (<em>P </em>< 0.05) more from initial concentrations of the finely ground CG in all soils, which averaged 76.2 and 158 mg<span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8729;</span></span>kg<sup><span style="white-space:nowrap;"><span style="white-space:nowrap;">&#8722;</span></span>1</sup>, 展开更多
关键词 Wastewater-Recovered Struvite Soil Fertilizer Behavior Extractable Soil Nutrients Arkansas Soils
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Application of the Humic Substances and Ammonia in Order to Minimize Losses on Nitrogen Fertilization 认领
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作者 Luciana Teresa Dias Cappelini Lia Gracy Rocha Diniz +3 位作者 Ana Luiza Fornazari Juliana Vieira Alberice Patrícia Fatima Menegoci Eugenio Eny Maria Vieira 《农业科学(英文)》 2020年第3期211-222,共12页
Nitrogen (N) is an element absorbed in larger quantities by plants due to the vast number of chemical and biological reactions. Despite the high nutritional need of this element by the plants, it is not a constituent ... Nitrogen (N) is an element absorbed in larger quantities by plants due to the vast number of chemical and biological reactions. Despite the high nutritional need of this element by the plants, it is not a constituent of any terrestrial rock. To avoid high production costs of N, there is an increasing interest in the use of organic fertilizers in Brazil, including the use of humic substances (HS). In this work we evaluated the chelating properties of HS, when used together with a source of N. The nitrogen source used in this experiment was the ammonia. We checked the optimum conditions for interaction between the HS and ammonia such as: the ratio of reaction of each compound;minimum incorporation time between these compounds and the amount of ammonia that can be adsorbed by HS (income). The best ratio of ammonia/HS was 1/50 (v/v). Higher amounts of ammonia added to 50 mL of HS caused a greater loss of N. We also concluded that the application of ammonia/HS in the soil can be made immediately after their mixing, without the need of higher contact time between these substances in order to have the adsorption. No loss of ammonia was detected after 72 hours of its application together with HS. Finally, by using a factorial design, the best working area was found by settling the time of incorporation and volatilization in 24 h, and the volumes of HS and NH3 in 100 and 2 mL, respectively. 展开更多
关键词 ORGANIC FERTILIZER ADSORPTION VOLATILIZATION Experimental Planning
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从生产工艺角度探讨复合肥料的选用问题 认领
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作者 王政 崔海 《现代农业研究》 2020年第10期39-40,共2页
化肥在农业生产中具有重要作用,复合肥料是化肥的重要类别,使用普遍,市场上产品众多,施用复合肥料时的科学选择尤为重要。本文从生产工艺角度,探讨了氨化和氨酸、圆盘和转鼓造粒、高塔造粒和挤压造粒等工艺产品的特点,为广大用户科学合... 化肥在农业生产中具有重要作用,复合肥料是化肥的重要类别,使用普遍,市场上产品众多,施用复合肥料时的科学选择尤为重要。本文从生产工艺角度,探讨了氨化和氨酸、圆盘和转鼓造粒、高塔造粒和挤压造粒等工艺产品的特点,为广大用户科学合理选用复合肥料提供参考。 展开更多
关键词 化肥 复合肥料 生产
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Mineral Fertilization Influences the Acceptability of Fresh Pulp and Juice Made from Sugarloaf Pineapple 认领
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作者 Saba? Kate Elvire Line Sossa +4 位作者 Codjo Emile Agbangba Rodrigue Idohou Edmond Sacla A?de Gbènoukpo Pierre Tovihoudji Brice Sinsin 《农业科学(英文)》 2020年第3期342-353,共12页
Fertilization practices can influence the quality of pineapple fruit and consequently its acceptability by consumers who are increasingly oriented towards high quality agri-food products. This study aimed at evaluatin... Fertilization practices can influence the quality of pineapple fruit and consequently its acceptability by consumers who are increasingly oriented towards high quality agri-food products. This study aimed at evaluating the influence of N, P and K on some physico-chemical and organoleptic characteristics of pineapple (Ananas comosus L. Merr) for fresh consumption and juice processing. A complete NPK factorial design was installed in the south Benin. The treatments NPK in g plant-1 were randomized into four blocks: T1;T2;T3;T4;T5;T6;T7;T8;T9. Brix juice was determined using a refractometer and pH with a pH meter. An evaluation of sensory characteristics such as sweetness, acid taste and aroma of fresh pineapple pulp and processed juice was made by a panel of tasters selected and trained. A principal components analysis, followed by a numerical classification was performed on fruits’ sensory and physicochemical characteristics. Results showed that juice pH was significantly influenced by the phosphorus and potassium. Potassium influenced significantly juice yield. Some physico-chemical characteristics and sensory attributes were correlated between them and groups of treatments are formed for both the juice and the fresh fruit. 展开更多
关键词 Ananas comosus Fertilizer Fruit INTENSIFICATION JUICE SENSORY
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Inorganic Fertilizer Adoption, Use Intensity and Rainfed Rice Yield in Benin 认领
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作者 Firmin N. Anago Dagbenonbakin G. Dieudonné +2 位作者 Agbangba C. Emile Oussou C. T. Brice Amadji L. Guillaume 《土壤科学期刊(英文)》 2020年第1期1-15,共15页
Inorganic fertilizers are alternative ways of providing the necessary nutrients to rice crop and increase its productivity. In order to identify the factors determining inorganic fertilizer technology adoption and rai... Inorganic fertilizers are alternative ways of providing the necessary nutrients to rice crop and increase its productivity. In order to identify the factors determining inorganic fertilizer technology adoption and rainfed rice yield, a survey was carried out among 763 farmers in 11 municipalities in four agriculture development centers (ADC) of Benin. Composite soil samples were collected from 227 farmer fields and analyzed at the laboratory. Rainfed rice yields were determined in these different fields. Data collected was analyzed with R version 3.5.1 software. Results show that inorganic fertilizer technology adoption depends significantly on age, educational status, household size, contribution of rice to household income and organic fertilizer use (0.004 kg&sdot;ha&minus;1?with a mean of 74.68 kg&sdot;ha&minus;1. The quantities of inorganic fertilizer applied differ more importantly from one farmer to another and range from 4.58% to 90.5% with a mean of 27.15% of the level recommended by research. However, nitrogen, phosphorous, potassium, organic carbon, pH water, and exchanging capacity cation determine the rainfed rice yield. The policies that aim at promoting inorganic fertilizer among rainfed rice farmers must take into account these factors. 展开更多
关键词 Endogenous CROPPING Systems Double HURDLE Model Regression Tree Inorganic FERTILIZER
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Effects of Organic and Medium and Trace Element Fertilizers on Yield and Quality of Panax notoginseng 认领
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作者 Yongquan ZHU Junwen CHEN +3 位作者 Guangqiang LONG Tongbin ZHU Shusheng ZHU Shengchao YANG 《药用植物研究:英文版》 CAS 2020年第3期55-59,共5页
[Objectives]This study aimed to investigate the effects of organic and medium and trace element fertilizers(Ca,Zn,B)on yield and quality of Panax notoginseng to provide theoretical support for rational fertilization i... [Objectives]This study aimed to investigate the effects of organic and medium and trace element fertilizers(Ca,Zn,B)on yield and quality of Panax notoginseng to provide theoretical support for rational fertilization in cultivation of P.notoginseng.[Methods]Five fertilization treatments,control(CK),organic fertilizer(OM),zinc fertilizer(ZF),boron fertilizer(BF)and lime(LF),were designed.A two-consecutive-year field plot trail was conducted.The biological traits,yield and saponin content of P.notoginseng were determined.[Results]The application of organic fertilizer had no significant effect on the biological traits of P.notoginseng.Trace element fertilizers significantly increased the scape length of P.notoginseng.Among the treatments,ZF significantly increased the single flower weight but reduced the inflorescence diameter,while the effects of BF were opposite to those of ZF;LF significantly increased the stem thickness and reduced the plant height.All treatments significantly increased the seedling rate of three-year-old P.notoginseng,and the increase in the LF group(20.49%)was the largest,followed by those in the ZF(16.80%)and OM(16.40%)groups,and the increase in the BF group(13.08%)was the smallest.Although OM,ZF and BF treatments caused the root weight of individual plants to decrease,the final yield of each treatment was higher than that of the control group,and the increases in the BF and LF groups exceeded 17%(P<0.05).The total saponin outputs of all the treatments except OM were significantly higher than that of the control group.[Conclusions]Under the conditions of this test,the supplementation of organic and medium and trace element fertilizers on the basis of conventional fertilization will help to increase the yield of P.notoginseng.However,the reduction of the total saponin output of P.notoginseng caused by organic fertilizer cannot be ignored. 展开更多
关键词 Panax notoginseng Organic fertilizer Trace element fertilizer YIELD Total saponin output
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秸秆肥料化利用研究进展 认领
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作者 王艳锦 王明艳 +2 位作者 张全国 李文哲 夏晨曦 《农业工程》 2020年第9期58-61,共4页
秸秆是一种重要的生物质资源,在诸多利用方式中,作为肥料回归土地、回归农业,是最符合农业生态系统物质循环的一种利用方式。目前秸秆还田是秸秆肥料化利用的主要技术之一,分析了秸秆肥料化利用的发展优势,阐述秸秆直接还田、堆肥还田... 秸秆是一种重要的生物质资源,在诸多利用方式中,作为肥料回归土地、回归农业,是最符合农业生态系统物质循环的一种利用方式。目前秸秆还田是秸秆肥料化利用的主要技术之一,分析了秸秆肥料化利用的发展优势,阐述秸秆直接还田、堆肥还田和过腹还田等常用的利用形式,指出秸秆多元化肥料利用的途径,并展望其发展趋势,以期引发对秸秆高效资源化利用及农业可持续发展的思考,为推动秸秆肥料化利用提供参考。 展开更多
关键词 秸秆 肥料 还田 沼液 沼渣 缓释肥
Anammox bacterial abundance and biodiversity in greenhouse vegetable soil are influenced by high nitrate content 认领
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作者 Hongyi QIN Huan DENG +1 位作者 Cheng HAN Wenhui ZHONG 《土壤圈:英文版》 SCIE CAS CSCD 2020年第3期343-351,共9页
The anaerobic ammonium oxidizing(anammox) process has been found to play an important role in terrestrial ecosystems in recent years. However,the diversity and abundance of anammox bacteria in nitrogen(N)-rich agricul... The anaerobic ammonium oxidizing(anammox) process has been found to play an important role in terrestrial ecosystems in recent years. However,the diversity and abundance of anammox bacteria in nitrogen(N)-rich agricultural soils under high fertilizer greenhouse conditions are still unclear. Two greenhouse fields with different N fertilizer input levels were chosen, and their soil profiles were studied with molecular technologies, including quantitative polymerase chain reaction assay, a clone library, and phylogenetic analysis based on hzsB(encoding anammox hydrazine synthase β-subunit) gene. Molecular analyses suggested that anammox bacteria were at their highest density at 10–20 cm soil depth, and that the anammox bacterial abundance was significantly lower at high N than at low N. Candidatus Brocadia was the sole anammox bacterial genus throughout the soil depth profiles. The highest diversity of anammox bacteria was found at 30–40 cm soil depth, and different phylotypic clusters of Candidatus Brocadia were associated with specific soil environmental factors, such as nitrates, soil depth, and total N. Correlation analyses and redundancy analyses confirmed that high nitrate content associated with high N fertilizer input had a significant negative influence on the abundance and biodiversity of anammox bacteria. These results imply that excessive use of N fertilizer would affect arid land soil N loss to the atmosphere by the anammox pathway. 展开更多
关键词 anammox pathway community structure fertilizer input level greenhouse soil hydrazine gene nitrogen fertilizer nitrogen pollution soil degradation
Sustainable Bio-Conversion of Rice Straw Waste into High Quality Organic Fertilizer 认领
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作者 Hala M. Omar Yahia I. Mahmoud Salah M. El-Haggar 《环境保护(英文)》 2020年第4期315-331,共17页
The aim of this study is to investigate the effect of different additives including biochar, effective micro-organisms (EM), animal manure and commercial microbial inoculants on the bioconversion of rice straw. Differ... The aim of this study is to investigate the effect of different additives including biochar, effective micro-organisms (EM), animal manure and commercial microbial inoculants on the bioconversion of rice straw. Different compost piles were constructed, and each contained 50 kg of rice straw and mixture of natural rocks to enrich the compost nutritional value. The physical, chemical and biological parameters indicating the decomposition of organic material, maturation and quality of the organic fertilizer product were investigated during the composting process. A rapid increase in compost temperature was obtained in inoculated piles. All piles reached maturation after around 42 days. All analysis of the properties of the final compost products indicated that it was in the range of the matured level and can be used as organic fertilizer without limitation. The highest decomposition rate and highest organic fertilizer quality were obtained in the pile inoculated with EM and 10% biochar compared to other treatments. 展开更多
关键词 BIOCHAR Effective MICRO-ORGANISMS Organic FERTILIZER Rice STRAW
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Effect of Organic and Chemical Fertilizer Application on Growth, Yield, and Quality of Small-Sized Tomatoes 认领
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作者 Takamitsu Kai Shunya Nishimori Masahiko Tamaki 《农业化学和环境(英文)》 2020年第3期121-133,共13页
Tomatoes in Japan are generally cultivated under management systems that use chemical fertilizers and synthetic chemical pesticides. However, the continuous use of these fertilizers and pesticides damages the soil env... Tomatoes in Japan are generally cultivated under management systems that use chemical fertilizers and synthetic chemical pesticides. However, the continuous use of these fertilizers and pesticides damages the soil environment and reduces the number of soil microorganisms. Organic farming has a relatively low environmental impact compared to conventional farming techniques, but typically has lower and more unstable yields. In this study, we investigated the effect of organic and chemical fertilizer application on growth, yield, and quality of small-sized (cherry) tomatoes. Cherry tomatoes were cultivated using organic and chemical organic fertilizers. Average weight and lateral diameter were significantly higher under organic fertilizer than under chemical fertilizer. In addition, shoot dry weight was significantly higher under organic fertilizer than chemical fertilizer. Lycopene content was significantly higher under organic fertilizer than chemical fertilizer. The total carbon (TC), total phosphorus (TP), total potassium (TK), available phosphoric (SP) and exchangeable potassium (SK) contents, C/N ratio, and pH were significantly higher under organic fertilizer than chemical fertilizer. Bacterial biomass, nitrite (NO</span><span style="font-family:Verdana;">? 2</span><span style="font-family:Verdana;">-N) oxidation activity, nitrification (N) circulation activity, and phosphoric (P) circulation were higher under organic fertilizer than chemical fertilizer. From these results, the study indicates that appropriate controls such as TC, total nitrogen (TN), and C/N ratio of organic fertilizer increased microbial biomass and enhanced nutrient circulation such as N circulation activity and P circulation activity. </span><span style="font-family:Verdana;">These results can be used to improve current organic farming practices and promote soil conservation. 展开更多
关键词 Small-Sized Tomato Organic Fertilizer Soil Microorganisms Soil Fertility Agricultural Environment Environmental Conservation
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Competitive Relationships and Yield Advantage of Intercropping Faba Bean with Sugar Beet under Bio-Organic Additives and Mineral Nitrogen Fertilizer Rates 认领
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作者 Y. E. El-Ghobashi A. E. M. Eata 《农业科学(英文)》 2020年第4期369-389,共21页
A field experiment was conducted at El-Serw Agricultural Research Station, Damietta Governorate, Egypt during 2016/2017 and 2017/2018 seasons to reduce mineral N inputs of sugar beet with increased land use efficiency... A field experiment was conducted at El-Serw Agricultural Research Station, Damietta Governorate, Egypt during 2016/2017 and 2017/2018 seasons to reduce mineral N inputs of sugar beet with increased land use efficiency and profitability under intercropping conditions. Seven treatments included five treatments (90 kg nitrogen “N” + 30 m3 farm yard manure “FYM”/fad, 80 kg N +30 m3 FYM/fad, 70 kg N +30 m3 FYM/fad and 400 g of Cerealine + 30 m3 FYM/fad for intercropping faba bean cultivar Spanish with sugar beet cultivar Gloria) and two treatments (90 and 20 kg N/fad for solid culture of sugar beet and faba bean, respectively, as recommended mineral N fertilizer rate) were compared in a randomized complete block design with three replications. Solid culture of sugar beet with the application of recommended rate (90 kg N/fad) gave the highest top, root and sugar yields/fad, as well as the percentage of purity compared with the other treatments in both seasons. Intercropping faba bean with sugar beet plants with application of 90 kg N + 30 m3 FYM/fad gave the highest number of leaves/plant, leaf area/plant, root length, root diameter and root weight/plant followed by intercropped sugar beet plants that fertilized with 80 kg N + 30 m3 FYM/fad compared with the other treatments in both seasons. On the other hand, intercropped sugar beet that received 400 g of Cerealine + 30 m3 FYM/fad had the highest percentages of T.S.S. and sucrose followed by 70 kg N + 30 m3 FYM/fad compared with the other treatments in both seasons. Solid culture of faba bean with the application of 20 kg N/fad gave the highest plant height, number of seeds/pod and seed yield/fad, meanwhile the highest number of branches/plant and pod length were achieved by intercropping faba bean with sugar beet with application of 90 kg N + 30 m3 FYM/fad followed by intercropped faba bean plants that fertilized with 80 kg N + 30 m3 FYM/fad compared with the other treatments in both seasons. However, intercropped faba bean plants that fertilized with 70 kg N 展开更多
关键词 INTERCROPPING Sugar BEET Faba Bean Mineral N Fertilizer FYM Cerealine COMPETITIVE RELATIONSHIPS INTERCROPPING Economic ADVANTAGE
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Inoculation of <i>Rhizobiums sp</i>Strains to Improve Soil Fertility: A Peanut Trial in Covèand Ouessè(Benin) 认领
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作者 Alida Adjile Oscar Didagbe +3 位作者 Carrel Ayelo Frechno Boko Pascal Houngnandan Roch Mongbo 《农业科学(英文)》 2020年第4期448-463,共16页
Thought the increasing demand Arachis hypogaea L. (groundnut), its yields remain low with increasingly using chemical fertilizers. To reduce the costs for chemical fertilizers inquisition and their long-term toxic eff... Thought the increasing demand Arachis hypogaea L. (groundnut), its yields remain low with increasingly using chemical fertilizers. To reduce the costs for chemical fertilizers inquisition and their long-term toxic effects on soils, microbial bio-fertilizers could be an accessible alternative to peanut farms. Thus, the aim of this study was to assess the performance of rhizobia strains on peanut varieties production. The experiments were conducted in two agro-ecological zones of Benin, in a peasant environment peasant-researcher control or under peasant and researcher control. The experimental device used was a complete random block with nine repetitions and two factors namely inoculation (with Rhizobium sp and without Rhizobium sp) and mineral fertilizer (with N15P15K15 and without N15P15K15). The effects of these factors divided into four treatments were evaluated on the plants vegetative, symbiotic and production parameters. In addition, an evaluation of each treatments’ comparative advantages was carried out. The results showed that the association Rhizobium sp and N15P15K15 induced groundnut plants best vegetative and productive parameters. The best comparative advantages in economic terms were also recorded with the same combination (Rhizobium sp + N15P15K15). Considering the technical performance, the recorded treatments effects can be classified as follows: Control Rhizobium sp 15P15K15 Rhizobium sp + N15P15K15. Thus, the association Rhizobium sp + N15P15K15 induced both the best plants vegetative and productive parameters and the best comparative advantage from an economic point of view. The results also showed that the plants’ response to inoculation, the application of manure and their combination was more marked in the bar soil zone (Covè) than in the cotton zone (Ouessè). Considering the negative effects linked to the use of chemical fertilizers, the use of Rhizobium sp could be an interesting path to increase the groundnut production. 展开更多
关键词 ARACHIS hypogeae L. RHIZOBIUM SP Bio Fertilizer Soil Fertility BENIN
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Response of Sweet Wormwood (<i>Artemisia annua</i>L.) to Different Rates of Inorganic Nitrogen Fertilizer in Semi-Arid Zimbabwe 认领
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作者 John Nyoni Tendai Madanzi +2 位作者 Joanah Midzi Tavagwisa Muziri Arnold Kapenzi 《美国植物学期刊(英文)》 2020年第4期529-537,共9页
Sweet wormwood (Artemisia annua L.) is a highly valued crop, native to China, whose active ingredient “artemisinin” and its derivatives: artemether and artesunate, are used to prepare anti-malaria drugs. In Zimbabwe... Sweet wormwood (Artemisia annua L.) is a highly valued crop, native to China, whose active ingredient “artemisinin” and its derivatives: artemether and artesunate, are used to prepare anti-malaria drugs. In Zimbabwe, very little has been done on improving agronomic practices that can enhance the yield of this crop. As a result, herbal gardens in Zimbabwe producing this sweet aromatic herb are realizing low leaf biomass. The objective of this study was to determine the effects of varying nitrogen fertilizer levels on growth and yield of Artemisia annua. A randomized complete block design (RCBD) was used and replicated four times. The fertilizer treatments consisted of 0, 40 kg N/ha, 80 kg N/ha, 120 kg N/ha, 160 kg N/ha and were applied as a top dress four weeks after planting. Applying 80 kg N/ha, 120 kg N/ha or 160 kg N/ha resulted in the best performance of Artemisia annua with respect to the plant height, root dry weight, stem dry weight and leaf biomass. Low N level (40 kg N/ha) recorded significantly low means in plant height, root weight, stem weight and leaf biomass. The results suggest that 80 kg N/ha should be recommended for use by Artemisia annua farmers, since there was no significant different among the three higher fertilizer levels. However there is need for further research to determine different fertilizer use efficient to come up with accurate agronomic data package for Zimbabwean farmers. 展开更多
关键词 ARTEMISIA annua ARTEMISININ Nitrogen FERTILIZER Yield SEMI-ARID
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缓/控释肥研究现状及发展趋势 认领
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作者 史万杰 熊海蓉 +2 位作者 文祝友 熊远福 李祎成 《河南化工》 CAS 2020年第8期8-11,共4页
介绍了缓/控释肥料的概念、优缺点,并对其进行了分类,分析了缓/控释肥料的作用机理。综述了缓/控释肥料的研究进展。简要分析了缓/控释肥料需要解决的问题和今后的发展方向。
关键词 肥料 缓/控释肥 研究进展 作用机理
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Effects of Partial Replacement of Chemical Fertilizer by Bio-organic Fertilizer Kunyijian on Yield and Quality of Tobacco Leaves 认领
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作者 Folin LI Bingbing LU +4 位作者 Lina YANG Ronghui YANG Facong QIAN Xingyang XU Jie LI 《亚洲农业研究:英文版》 2020年第3期42-46,共5页
To explore the application effect of bio-organic fertilizer Kunyijian in flue-cured tobacco and provide scientific basis for its application in production,a plot trial was conducted with K326,a flue-cured tobacco vari... To explore the application effect of bio-organic fertilizer Kunyijian in flue-cured tobacco and provide scientific basis for its application in production,a plot trial was conducted with K326,a flue-cured tobacco variety,in the Science and Technology Test Base of Xundian County,Yunnan.Taking local fertilizer consumption(control 1)and 70%local fertilizer consumption(control 2)as controls,the following replacement groups were designed:under uniformly replacement 70%local fertilizer consumption,(i)organic fertilizer∶microbial agent=80∶1(kg),+600 kg/ha,+900 kg/ha,+1200 kg/ha,+1500 kg/ha Kunyijian;(ii)organic fertilizer∶microbial agent=40∶1(kg),+900 kg/ha Kunyijian.The results show that in the treatment of 70%local fertilizer consumption+1200 kg/ha Kunyijian[organic fertilizer∶microbial agent=80∶1(kg)],the comprehensive performance of flue-cured tobacco was significantly better than that in the control groups,the yield of tobacco leaves reached 2237.1 kg/ha,the output value was 45505.2 yuan/ha,and the average price of the tobacco leaves was 20.53 yuan/kg.The performance of flue-cured tobacco in the treatment of 70%local fertilizer consumption+1500 kg/ha Kunyijian ranked second.The performance of other fertilization treatments was not good,but it did not differ significantly from that of control 1.In terms of chemical composition of tobacco leaves,partial replacement of chemical fertilizer by bio-organic fertilizer Kunyijian,was beneficial to increase the sugar content and reduce the nicotine and total nitrogen contents in tobacco leaves,especially the treatment of 70%local fertilizer consumption+900 kg/ha Kunyijian[organic fertilizer∶microbial agent=80∶1(kg)],and it was also beneficial to increase the chlorine content in tobacco leaves,especially the treatment of 70%local fertilizer consumption+1500 kg/ha Kunyijian[organic fertilizer∶microbial agent=80∶1(kg)].Therefore,it is feasible to use the bio-organic fertilizer Kunyijian to replace 30%of chemical fertilizer in tobacco production.The rate is r 展开更多
关键词 Kunyijian Bio-organic FERTILIZER ALTERNATIVE chemical FERTILIZER YIELD and quality
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增施中微量元素肥料对木薯生长及产量的影响 认领
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作者 韦云东 郑华 +3 位作者 刘翠娟 李军 盘欢 罗燕春 《热带农业科学》 2020年第1期7-14,共8页
为探讨增施中微量元素肥料在木薯种植中的作用,在大田条件下,以南植199、桂热9号为材料,设不施肥、常规施肥及增施中微肥(穴施、叶面喷施及浸种)等不同处理,研究增施中微量元素肥料对木薯生长及产量的影响。结果表明,施肥可促进木薯生... 为探讨增施中微量元素肥料在木薯种植中的作用,在大田条件下,以南植199、桂热9号为材料,设不施肥、常规施肥及增施中微肥(穴施、叶面喷施及浸种)等不同处理,研究增施中微量元素肥料对木薯生长及产量的影响。结果表明,施肥可促进木薯生长并增加鲜薯产量及淀粉产量。品种间中微量元素肥效存在差异,增施熟石灰、硫酸镁、叶面喷施硼砂、综合处理及钙镁磷肥处理能显著提高南植199鲜薯产量;其中,钙镁磷肥处理鲜薯增产39.7%,淀粉增产达到51.3%;其次为增施熟石灰处理鲜薯增产35.6%,淀粉增产44.8%。而桂热9号增产效果为综合处理鲜薯增产10.6%,淀粉增产32.5%;穴施硫酸镁淀粉增产21.2%;钙镁磷肥处理鲜薯增产10.0%。综上所述,本试验条件下主要增产因素为镁和钙;因此木薯种植中施用中微量元素肥料应考虑品种差异和不同施用方式差异;尿素+钙镁磷肥+氯化钾替代常规施肥中尿素+普通复合肥+氯化钾可有效提高木薯鲜薯产量及淀粉产量。 展开更多
关键词 木薯 中微量元素 肥料 产量 钙镁磷肥
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Effect of Animal Manure on the Incidence and Severity of Leaf Spot Disease of Fluted Pumpkin (<i>Telfairia occidentalis</i>) in Dschang, West Region of Cameroon 认领
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作者 Mbong Grace Annih Nelomen Che Benedicte Tatiana +2 位作者 Tonjock Rosemary Kinge Anoumaa Mariette Andrew Kpu Kebei 《美国植物学期刊(英文)》 2020年第7期1057-1076,共20页
Fluted Pumpkin known as </span><span style="font-family:Verdana;"><i>Telfairia occidentalis</i></span><span style="font-family:Verdana;"> is an important vegetab... Fluted Pumpkin known as </span><span style="font-family:Verdana;"><i>Telfairia occidentalis</i></span><span style="font-family:Verdana;"> is an important vegetable crop in the tropics, cultivated for its leaf vegetable and edible seeds. It is a plant with a wide range of virtues but nevertheless;it is threatened by large scale fungal attacks. In order to manage the problem of food security and meet up with the production of this crop, this study was carried out to assess the effect of animal manure on the incidence and severity of leaf spot disease of Fluted Pumpkin and to determine the pathogenicity test of white leaf spot in Dschang. This research was done in the Faculty of Agronomy and Agricultural Sciences experimental farms at the University of Dschang from November 2017 to May 2018. The field layout was Randomized Complete Block Design with three treatments (poultry manure, piggery manure and control) and three replications. Each replicate consisted of six plots, giving a total of eighteen plots per treatment. In each treatment, fluted pumpkin was spaced at 1 m × 1 m apart. Application of organic manure was done at 3 weeks after emergence and data collection were carried out weekly from 42 DAP. Pathogenicity test was conducted after the establishment of lesions on the leaves. Data were analyzed using descriptive and ANOVA. It was observed that piggery manure treatment had the highest disease incidence (DI = 86.89) compared to the control (DI = 85.42) and poultry manure (DI = 65.74). The pathogenicity test revealed that </span><i><span style="font-family:Verdana;">Phoma sorghina</span></i><span style="font-family:Verdana;"> was the causal agent for leaf spot disease in fluted pumpkin with a frequency of 18. Disease incidence and severity was reduced in poultry manure, followed by the control with piggery manure having more disease. Therefore, poultry manure had a better management option of leaf spot disease on fluted pumpkins compared to the other treatments. 展开更多
关键词 Vegetable Organic Fertilizer INCIDENCE SEVERITY Pathogenicity
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