【摘要】 以北丰-14为供试品种,研究了大豆在不同密度、施肥量处理下,氮、磷、钾平衡吸收关系。结果表明:大豆在生育期中植株氮、磷、钾积累量间以及三要素与干物质积累量间均呈极显著的线性相关关系。单产200kg/667m2大豆群体,每生产100kg大豆籽粒需N8.32kg,P2O52.20kg,K2O3.21kg;N∶P2O5∶K2O=1∶0.26∶0.39。更多还原

【Abstract】 In this experiment, taking Beifeng 14 as experiment material, the authors studied the relation of balance assimilation of N, P and K under treatments of different density and fertilization. The result showed that it was very obvious linearity correlation among accumulation of N, P and K, and between accumulation of N, P and K and accumulation of dry matter. It needed to assimilate N 8.32kg,P₂O₅ 2.20kg,K₂O 3.21kg to produce 100kg seeds in the yield that could produce more than 200kg/seeds per 667m², and the ratio of N, P₂O₅ and K₂O was （1∶0.26∶0.39.）更多还原