摘要
试验结果表明:优化水肥及秸秆还田优化水肥条件下冬小麦总根量显著高于传统水肥,根长密度和根重密度随上层深度递减速度慢,氮肥当季利用率显著提高,但各处理条件下水分利用效率差异不明显。
The results of analysis are as the following. The irrigation - optimized fertilization and irrigation - optimized fertilization with crop residues significantly make total root amount of winter wheat more than traditional irrigation fertilization. The root length density and root weight density decrease slowly according to soil depth, and the efficiency of nitrogen fertilization using increase significandy. The efficiency of water using in each treatment is insig-nificandy different.
基金
国家自然科学基金(30070451)
中德合作项目(0339712A)A2子项目
关键词
水肥
处理模式
冬小麦
根系
生长发育
氮肥
利用效率
秸秆还田
Winter wheat
Optimized irrigation fertilization
Traditional irrigation fertilization
Crop residues
