豫北地区小麦氮磷效应模型及其应用

Studies on The Fertilizer Effect Model of Nitrogen and Phosphonium of Wheat and its Application in Northern Henan

根据120块麦田的氮、磷施用量与产量的调查资料，分别建立三种不同产量水平的产量目标性状的氮、磷效应模型，并依此计算出不同R值的推荐措施方案，为经济合理施肥提供理论依据。

According to the investigation on fertilizer amount of N,P2O5 and yield in 120 wheat fields the fertilizer effect model of N,P2O5 from 3 different yield levels has been made. Judging by this, the recommended different R value fertilizer apply plan has been calculated. And the theoretical basis for rational and economical fertilizer apply has also been provided.