豫豆25号的营养吸收特点与施肥效果

The Nutrition Absorption Characteristics of Yudou 25 and the Effect of Fertilizer Application on Soybean

对豫豆 2 5号的营养吸收特点及施肥效果进行两年的研究 ,结果表明 :该品种对养分的吸收数量因施肥水平不同而异 ,需氮和锌等元素的数量较其它品种略高 ,中前期对磷、钾的需求较高 ,而开花后对氮的吸收较快。氮磷钾配施不仅能提高大豆的产量 ,而且能增加籽实的蛋白质 。

Two year studies on the nutrition absorption characteristics of Yudou 25 and the effect of fertilizer application on soybean showed that the nutrition absorption rate of Yudou 25 was different with the change of fertilizer application.The higher rate of nitrogen and zinc was absorbed by Yudou 25,compared with other soybean varieties.The variety needed higher rate of phosphorus and potassium in the earlier middle stage,and higher rate of nitrogen in the middle later stage.The combination application of N,P and K fertilizers may increase not only the yield of soybean,but also its quality.