安徽农业科学2017，Vol.45Issue(22)：83-84,100,3.
控释尿素减量施用的水稻产量效应研究
Effects of Application Reduction of Controlled-release Urea on Yield of Rice
摘要
Abstract
[Objective]In order to determine the suitable controlled-release urea application rate of the rice field in paddy-upland rotation area.[Method]Taking fractionated application conventional urea as control,a field experiment was conducted to investigate the effects of controlled-release urea reduction rate on yield and economic benefit of rice with the purpose of providing the farmers with scientific basis in promoting reduction of controlled-release urea application rate.[Result] The treatment of controlled-release urea reduction 20% significantly increased the yield of rice by 4.7%,compared with conventional urea spilt.The yield of rice would significantly decrease,while the controlled-release urea reduction rate exceeded 20%.Controlled-release urea reduction 20% could increase the effective panicle number and grain number per spike.Economic benefit of controlled-release urea reduction 20% was the highest,and the output value and net income were increased by 4.7% and 5.7% than those of conventional urea,respectively.Controlled-release urea reduction could effectively improve ratios of output to input for rice.Rational application reduction of controlled-release urea can increase rice yield and economic benefit.It is proposed that though the controlled-release urea of basic fertilizer,20% nitrogen reduction based on local custom fertilization levels can significantly increase economic benefit in the paddy field while maintaining the yield of rice.[Conclusion]The research can provide theoretical basis for application reduction of controlled-release urea.关键词
控释尿素/水稻/产量/经济效益Key words
Controlled-release urea/Rice/Yield Economic benefit分类
农业科技引用本文复制引用
李敏,郑仁兵,韩上,雷之萌,武际..控释尿素减量施用的水稻产量效应研究[J].安徽农业科学,2017,45(22):83-84,100,3.基金项目
公益性行业(农业)科研专项经费项目(201503122) （农业）
安徽省重点研究与开发计划项目(1704e1002237) （1704e1002237）
安徽省农业科学院院长青年创新基金项目(16B1019). （16B1019）
