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 )
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.
出处
《中国生态农业学报》
CAS
CSCD
2004年第4期145-148,共4页
Chinese Journal of Eco-Agriculture
基金
国家科技部项目"区域生态环境安全和生态经济系统重建关键技术研究与示范"子专题"区域农田生态系统优化关键技术研究"部分研究内容
