县大豆是黄淮海平原种植的主要油料作物，长期以来产量低而不稳，除气候因素影响外，不施肥或施肥不当是其主要原因。本文报道了我们近几年关于氮肥施用期和磷肥施用量对夏大豆产量影响的研究结果。试验在河南省新乡市中国科学院封丘农业生态实验站潘店试区进行，土壤为黄河冲? County soybean is the main oilseed crop planted in the Huang-Huai-Hai Plain. For a long time, the yield was low and unstable. Apart from the influence of climatic factors, the main reason for not applying fertilizer or improper fertilization was soybean. In this paper, we report the results of our study on the effect of N fertilizer application and P application on summer soybean yield in recent years. The experiment was carried out in Pandian Experimental Area of ​​Fengqiu Agro-Ecological Experimental Station of Chinese Academy of Sciences in Xinxiang City, Henan Province. The soil was washed by the Yellow River