摘要
[目的]研究不同氮肥运筹对小麦群体结构、产量及氮肥利用率的影响。[方法]研究了不同处理对小麦生育期群体动态变化、产量及其构成因素、氮肥利用率的影响。[结果]基追比为3.0∶5.0∶2.0处理的增产效果最好,与对照(CK)相比产量提高了1 876.4 kg/hm^2,增产率达到了31.4%,施肥比例为3.3∶3.3∶3.3的处理增产效果次之。从氮肥利用率来看,氮肥分3次施用高于分2次施用的处理以及1次基肥的处理,说明"前轻中重后补"的施肥方式是一项高产高效的氮肥运筹技术。[结论]该研究为小麦的合理施肥模式提供理论依据。
[ Objective ] To study the effects of different nitrogen application techniques on population structure, yield and nitrvgen use effi- ciency of wheat. [ Method ] We researched the effects of different treatments on the population dynamic changes, yield and its component tac- tots, nitrogen use efficiency of wheat at growth stage. [ Result] Treatment of 3.0：5.0：2.0 base-topdlessing tertilizer ratio had the best yield in- cleasing effects, incleased by 1 876.4 kg/hm2 compared with that of CK with the yield incleasing rate being 31.4%. The yield incleasing effects of treatment of 3.3：3.3：3.3 tertilizer ratio took the second place. According to the utilization rate of nitlvgen tertilizer, nitrogen tertilizer applying 3 times was higher than that of applying 1 or 2 times, indicating that tertilization mode of ＂first light, middle heavy and finally supple- ment＂ was a high efficient nitlvgen application technology. [ Conclusion ] This research provided theoretical basis for the rational fertilization model of wheat.
作者
郜峰
刘国涛
韩勇
董军红
周其军
薛志伟
杨春玲
GAO Feng;LIU Guo-tao;HAN Yong(Anyang Academy of Agricuhural Sciences,Anyang,Henan 45500)
出处
《安徽农业科学》
CAS
2018年第24期23-24,27,共3页
Journal of Anhui Agricultural Sciences
基金
农业部国家现代农业产业技术体系资金资助项目(CARS-3)
关键词
小麦
氮肥运筹
群体
产量
氮肥利用率
Wheat
Nitrogen application
Population
Yield
Nitrogen use efficiency
