【摘要】 采用三因素二次通用旋转组合设计,对豫南黄棕壤区油菜施用氮、磷、钾肥进行定量研究。建立了油菜目标产量函数模型;通过模型解析选优,确定了每公顷油菜目标产量≥2250 kg;≥1875 kg;≥1500 kg及最高产量的施肥推荐措施。更多还原

【Abstract】 Adopt two of factors in common used to rotate association design,at south of Henan Province yellow brown earth districts rape used nitrogen,potassium,phosphorus in quantitative researching.The function model of output of goal of rape was set up;Through model being analytic to select excellent,Each hectare of rape goal output ≥2250 kg;≥1875 kg;≥1500 kg.and most high yield applying fertilizer measure of giving a recommendation were determined.更多还原