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本文根据1988-1989年在濉溪和宿县两地同时进行的氮磷肥不同施量试验结果,分析了小麦籽粒产量与植株氮磷钾素吸收量的关系,求出亩产400公斤产量水平形成百公斤籽粒消耗氮磷钾量分别为3.255、1.185和2.655公斤.建立了籽粒产量和蛋白质含量的氮磷素效应方程,依据产量效应方程,求出淮北砂姜黑土地区亩产450公斤水平的经济最佳施氮量为14.64公斤,施磷(P_2O_5) 量为5.71公斤,阐述了氮磷素施量对氮肥利用率的影响.根据高产小麦的需氮、需磷特性和土壤供氮动态,确定了氮磷肥的科学运筹方式.
Based on the results of different application experiments of nitrogen and phosphorus fertilizers simultaneously between Suixi and Suxian in 1988-1989, the relationship between grain yield and N, P, K uptake was analyzed. The yield of 400 kg per mu Kilograms of NPK consumption were 3.255, 1.185 and 2.655 kg respectively.The establishment of a nitrogen and phosphorus effect equation of grain yield and protein content, based on the yield effect equation, The optimum nitrogen application rate was 14.64 kg and P_2O_5 was 5.71 kg, and the effect of N and P fertilization on N use efficiency was described.According to the nitrogen demand, phosphorus requirement and soil nitrogen supply of high yield wheat, The scientific method of nitrogen and phosphorus fertilizer.