作　　者： ; ;

机构地区： 河南科技大学

出　　处： 《河南农业科学》 2003年第9期42-45,共4页

摘　　要： 在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 ,且根长密度和根重密度随土层深度的递减速度较传统水肥慢。优化水肥及秸秆还田优化水肥的氮肥当季利用率显著高于传统水肥 ,但各处理间水分利用效率差异不大。 The optimized water-fertilization and optimized water-fertilization with crop residues led to significantly more winter wheat total root amount and smaller rate of progressive decrease of the root length density and root weight density with soil getting deep than the traditional water-fertilization. The optimized water-fertilization and optimized water-fertilization with crop residues significantly improved nitrogen use efficiency.No significant differences in water use efficiency of winter wheat were found between the three treatments

关 键 词： 冬小麦 根系生长 水分利用率 肥料利用率 优化水肥 传统水肥 氮肥

领　　域： [农业科学]