华北农学报Issue(3)：164-170,7.
冬小麦－夏玉米复种连作体系下氮肥周年运筹对其产量及构成要素的影响
Effects of Nitrogen Fertilizer Annual Management on Grain Yield and Yield Components of Wheat and Maize in Winter Wheat-Summer Maize Continuous Cropping System
摘要
Abstract
In the field experimental conditions,the studies were carried out on the effects of nitrogen fertilizer annual management on grain yield and yield key components of wheat and maize in winter wheat -summer maize con-tinuous cropping system.At the same time,the correlation and path analysis were made on each yield components , ear and spike characters,the key agronomic characters of winter wheat and summer maize ,respectively.The results showed that in winter wheat -summer maize continuous cropping system ,the effects of middle and high nitrogen ferti-lization level on the key yield components of winter wheat ,including grain number per spike,spike grain weight and filled spikelet number per spike,were more improved than those of control and low nitrogen fertilization level ,and 1000-grain weight was reduced;meanwhile,there were more significant improvement on 100-grain weight,ear weight and length of summer maize under middle and high nitrogen fertilization level .But there was no significant differ-ence between middle and high nitrogen fertilizer level .In conclusion,in winter wheat-summer maize continuous cropping system in North China plain,with irrigation at the jointing and flowering stage of winter wheat ,the applica-tion rate of nitrogen fertilizer of winter wheat was 210 -270 kg/ha,which was applied as base and jointing fertilizer , and the application rate of nitrogen fertilizer of summer maize was 240 -300 kg/ha,which was applied at the joint-ing and big flare period of summer maize,moreover,nitrogen fertilizer annual management in winter wheat -summer maize continuous cropping system can obtain the optimal yield .关键词
冬小麦/夏玉米/复种连作体系/氮肥周年运筹/产量构成要素Key words
Winter wheat/Summer maize/Continuous cropping system/Annual nitrogen application/Yield components分类
农业科技引用本文复制引用
孙志考,田北京,王月福,赵长星,林琪,杜金哲,王瑞英..冬小麦－夏玉米复种连作体系下氮肥周年运筹对其产量及构成要素的影响[J].华北农学报,2013,(3):164-170,7.基金项目
国家“十二五”科技支撑计划项目（2011BAD09B01－2）；国家公益性行业（农业）科研专项（200903007－03）；山东省科技发展计划项目（2010GNC10902）；山东省“泰山学者”建设项目 （）
