【摘要】 采用三元二次回归组合设计试验研究探索出 1套稳定玉米产量不变而精量节肥防治面源污染高产栽培模式 ,并建立了玉米栽培密度、施N量和施P量的数字模型 ,确定了P肥按穴基肥深施 ,N肥以速效攻穗为主的深施 (10cm以上 )化肥的施肥技术更多还原

【Abstract】 Using the orthogonal quadratic regression design method, a cultivation technology mode to retain maize high yield with applying fertilizer in extractive quantity is found out,by which nonpoint-source pollution can be controlled.From the research result,a numeric mode of the density of maize planting,quantity of applying N and quantity of applying P is built,and the applying technologies of fertilizer are defined including deep hole-application of P fertilizer and deep application of N fertilizer for the rapid growth of its ears.更多还原