水地小麦高产施肥模型及其应用研究

采用三因素二次回归旋转组合设计方法,对影响小麦产量的氮肥、磷肥、有机肥的用量进行了定量研究,建立了中等以上肥力的水地小麦产量形成的施肥函数模型及最佳施肥组合方案,并确定水地小麦施肥模型主因素作用效应顺序:磷肥>氮肥>有机肥.还研究了各项施肥措施间的交互作用效应.

A Study on Fertilizer Application Model and Its Use for Higher Wheat

In 1988-1990 field experiments of winter wheat with 3 factors 5 levels of orthogonal rotation design was carried out. The doses of N, P and organic fertilizer, which can all afffect the yield of wheat, were studied quantitatively. Based on experimental results in two years and many test sites, the simulation model of wheat yield to doses of N, P, organic fertilizer was established, and the optimal combination of fertilizing amount was obtained. By reduing the dimension and resolving the model, the responses of wheat yield to each single fertilizer element and the interaction effects between N, P, and organic fertilizer were investigated.