关中灌区夏玉米磷钾配肥产量效应研究  

Study on the effect of P K fertilizer utilized by ratio on yield of summer corn in Guan zhong irrigation area

作　　者：刘漫道[1] 杨安民[1] 唐保善[1] 夏志明[1] 杨峰[1] 

机构地区：[1]西北农林科技大学农学院棉花研究所,陕西杨凌712100

出　　处：《土壤肥料》2003年第3期14-16,共3页Soils and Fertilizers

摘　　要：试验采用二因素二次饱和D最优设计方法,对磷钾施用量的配合与关中灌区夏玉米产量间的关系进行了研究,试验结果表明,磷钾肥对玉米的产量效应均为明显,钾肥作用尤其明显,钾肥的增产效应明显大于磷肥,同时筛选出了磷钾配合优化组合方案。The relationship between the yield of the summer maize and amount of the combined application of P2O5 and K2O fertilizer was studied by the method of two factors Doptimun represion layout in Shaanxi Guan zhong irrigation areas. The result showed the application of P2O5 and K2O fertilizer could increase maize yield, and the effect extent of increasing maize yield for application K2O fertilizer was more than for P2O5. The most model of the combined application of P2O5 and K2O fertilizer was selected.

关 键 词：关中灌区 夏玉米 磷肥 钾肥 配合施肥 产量 增产效应 

分 类 号：S513[农业科学—作物学]