期刊文献+

施钾对不同肥力土壤玉米钾素吸收、分配及产量的影响 预览 被引量:6

Effect of potassium application rate on potassium absorption, distribution and yield of spring maize under different soil fertilities
在线阅读 免费下载
收藏 分享 导出
摘要 采用田间试验, 研究了吉林省高(榆树市)、低肥力(公主岭市)肥力条件下不同钾肥用量对玉米产量、钾素吸收和分配的影响。结果表明, 榆树试验点和公主岭试验点的最高产量施钾量分别为83.3 kg·hm-2和113.9 kg·hm-2, 最佳经济施钾量分别为75.1 kg·hm-2和103.1 kg·hm-2。公主岭低肥力试验点比榆树高肥力试验点的最高产量和最佳经济产量分别提高了3.70%和3.68%。施用钾肥可有效提高玉米干物质最大积累速率和钾素最大吸收速率, 并能提前干物质最大积累速率和钾素最大吸收速率出现的天数。当施钾量超过60 kg(K2O)·hm-2时, 公主岭低肥力试验点的干物质最大积累速率和钾素最大吸收速率均高于榆树高肥力试验点。适宜的钾肥用量有利于提高钾养分由营养体向籽粒的转运量、转运效率及籽粒养分比例, 榆树高肥力试验点籽粒养分比例低于公主岭低肥力试验点, 幅度为0.5%~1.7%。除施钾量60 kg(K2O)·hm-2处理外, 公主岭低肥力试验点的钾肥农学利用率、偏生产力和利用效率等指标均高于榆树高肥力试验点, 分别提高7.3~8.8 kg·kg-1、4.4~8.3 kg·kg-1、1.6%~6.2%。综合考虑提高玉米产量、效益及钾肥利用效率, 高肥力土壤适宜施钾量为75 kg·hm-2, 低肥力土壤上适宜施钾量为103 kg·hm-2。 Field experiments were conducted to study the effects of different potassium dosages on potassium absorption, distribution and yield of maize in high (Yushu City) and low (Gongzhuling City) fertility soils in Jilin Province. The results showed that potassium dosages of 83.3 kg(K2O)·hm-2 and 113.9 kg(K2O)·hm-2 produced the highest maize yields while potassium dosages of 75.1 kg(K2O)·hm-2 and 103.1 kg(K2O)·hm-2 were most economic for Gongzhuling and Yushu, respectively. The highest and optimum economic yields for Gongzhuling respectively increased by 3.70% and 3.68% compared with Yushu. Potassium fertilizer application effectively improved maximum potassium absorption and dry matter accumulation rates of maize. It also caused maximum dry matter accumulation and potassium absorption rate to occur early during the growth season. When potassium dose exceeded 60 kg(K2O)·hm-2, maximum dry matter accumulation and potassium uptake rates in Gongzhuling were higher than those in Yushu. Appropriate dosage favored high translocation (rate and amount) of potassium from vegetative organs to grain and also increased grain nutrient efficiency ratio. Grain nutrient ratio in Yushu was less than that in Gongzhuling by 0.5% 1.7%. Except potassium fertilizer treatment of 60 kg(K2O)·hm-2, the agronomic efficiency of potassium, partial factor productivity of potassium and recovery efficiency of potassium in Gongzhuling were higher than those in Yushu by 7.3 8.8 kg·kg-1, 4.4 8.3 kg·kg-1, 1.6% 6.2%, respectively. To improve maize yield along with the benefits and use efficiency of potassium, the recommended optimum potassium dosages for Yushu (high soil fertility) and Gongzhuling (low soil fertility) areas were 75 kg(K2O)·hm-2 and 103 kg(K2O)·hm-2, respectively.
作者 侯云鹏 张磊 孔丽丽 尹彩侠 秦裕波 李前 谢佳贵 HOU Yun-Peng, ZHANG Lei, KONG Li-Li, YIN Cai-Xia, QIN Yu-Bo, LI Qian, XIE Jia-Gui (Institute of Agricultural Resources and Environment Research, Jilin Academy of Agricultural Sciences; Key Laboratory of Plant Nutrition and Agro-Environment in Northeast Region, Ministry of Agriculture, Changchun 130033, China)
出处 《中国生态农业学报》 CAS CSCD 北大核心 2013年第11期1333-1339,共7页 Chinese Journal of Eco-Agriculture
基金 中国-国际植物营养研究所(IPNI)合作项目(BFDP-Jilin-2012)资助
关键词 玉米 钾肥用量 土壤肥力 钾吸收 钾分配 干物质转运 Maize, Potassium dosage, Soil fertility, Potassium absorption, Potassium distribution, Dry matter translocation
作者简介 侯云鹏(1982-),男,本科,研究实习员,主要从事植物营养研究。E-mail:exceedfhvfha@163.com 通讯作者:谢佳贵(1972-),男,博士,副研究员,主要从事植物营养研究。E-mail:xiejiagui@163.com
  • 相关文献

参考文献29

二级参考文献171

共引文献365

同被引文献146

引证文献6

二级引证文献14

投稿分析

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈