期刊文献+

包膜尿素在胶园土壤中养分释放特性研究 预览

Nitrogen Release Characteristics of Coated Urea in Rubber Plantation Soils
在线阅读 下载PDF
收藏 分享 导出
摘要 为了探讨包膜尿素应用于橡胶树施肥管理中的可行性,本文通过田间土壤埋袋法,研究了3种包膜尿素在胶园土壤中的养分释放特性,并对包膜尿素养分累积释放率与积温进行了方程拟合。结果表明,在整个试验期间,硫包衣尿素、树脂包膜尿素、植物油包膜尿素的养分累积释放率分别为51.01%、95.32%、82.91%,初期溶出率分别为4.89%、1.71%、2.07%,28 d养分累积释放率分别为36.30%、39.94%、43.33%。硫包衣尿素、树脂包膜尿素、植物油包膜尿素的养分累积释放率与土壤积温的关系均可用二项式方程进行拟合,且具有很好的相关性(相关系数r分别为0.940、0.998、0.984)。可根据各植胶区的施肥时期土壤积温,利用拟合方程计算出包膜尿素养分累积释放率,确定包膜尿素科学施肥措施,有利于包膜尿素在橡胶树上合理施用。 To explore the feasibility of the application of coated urea in the cultivation of rubber trees, the nutrient release characteristics of coated urea were studied in the rubber plantation soil with a buried bag experiment. Relationship between cumulative nitrogen release rate and accumulated temperature of soil was fitted by equations. Results showed that the nutrient accumulation-release rate of sulfur coated, resin coated, vegetable oil coated urea was 51.01%, 95.32% and 82.91%, respectively; the initial release rate was 4.89%, 1.71% and 2.07%, respectively; the cumulative nitrogen release rate of 28 d was 36.30%, 39.94%, 43.33%, respectively. Relationship between cumulative nitrogen release rate and accumulated temperature of soil was fitted by a quadratic equation, and the values of r were 0.940, 0.998, 0.984. Therefore, according to the soil accumulated temperature during the fertilization period, and the nitrogen cumulative release rate of coated urea was calculated using the fitting equation, to determine the scientific fertilization measures of the coated urea. It is helpful for the reasonable application of coated urea in rubber tree.
作者 林清火 雷菲 刘海林 华元刚 茶正早 罗微 LIN Qinghuo1, LEI Fei2, LIU Hailin1, HUA Yuangang1, CHA Zhengzao1, LUO Wei1 (1. Rubber Research Institute / Soil and Fertilizer Research Center, Chinese Academy of Tropical Agricultural Sciences, Danzhou, Hainan 571737, China; 2. Agricultural Environment and Soil Research Institute, Hainan Academy of Agricultural Sciences, Haikou, Hainan 571100, China)
出处 《热带作物学报》 CSCD 北大核心 2018年第11期2113-2117,共5页 Chinese Journal of Tropical Crops
基金 海南省财政科技计划项目(No.ZDYF2018088) 现代农业产业技术体系建设专项资金项目(No.CARS-34) 中国热带农业科学院基本科研业务费专项(No.1630022017007)
关键词 包膜尿素 养分释放特性 积温 橡胶园 coated urea nutrient release characteristics accumulated temperature rubber plantation
作者简介 林清火(1978-),男,副研究员,研究方向:新型肥料研发与数字化施肥,E-mail:qinghuol@163.com.
  • 相关文献

参考文献11

二级参考文献189

共引文献482

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