摘要
试验结果表明:氮磷能促进水稻的生长发育和提高产量.通过建立肥料效应函数方程式和经济效益评价,得出最佳施肥量为氮每亩7.5-9.0公斤,磷每亩4.0～5.0公斤.氮肥全层混施的处理,氮素利用率、产量要比撒施处理的高.无机有机配合施用,要考虑有机肥料的碳氮比.
The experimental results indicated that N P fertilizer applicationpromoted the rice growth and increased the grain yield. Through establishing thefertilizer response function formula and evaluating its efficiency, we could getthe optimum application rate: N 7.5～9.0kg Per mu and P 4.0～5.0kgP_2O_5per mu.The N recovery and grain yield from N whole layer incorporation treatmentwas higher than that from the broadcasting. It is neccessary to take C/N ratiointo consideration when applying the inorganic fertilizer combined with theorganic manure.
出处
《安徽农业科学》
CAS
1991年第1期52-56,共5页
Journal of Anhui Agricultural Sciences
关键词
皖南红黄壤
水稻
氮磷化肥
施肥量
N. P fertilizer
Response function
Border benifit
Whole layer incorporation treatment
Optimum application
