大豆施氮肥接种根瘤菌效果研究

Study on Effect of Application of Nitrogen and Rhizobium on Soybean

大豆接种根瘤菌以增强固氮能力 ,有助于磷钾肥的吸收 ,当接种适量的根瘤菌时 ,在相同磷钾肥基础上 ,施以不同量级的氮素在一定范围内 ,随着施氮量的增加 ,固氮能力加强 ,生物产量明显提高。试验结果表明 ,以施氮量 1 87.5kg/hm2 增产效果最明显 ,超过 1 87.5kg/hm2

Inoculation of rhizobium can increase nitrogen fixation and absorption of phosphorus and potassium in soybean. Application of nitrogen can, in certain range, heighten the ability of rhizobinm on nitrogen fixation, increasing the biomass of soybean. The result showed that the optimum application amount of nitrogen was 187.5kg/ha.