【摘要】 以蒙豆 5号为供试品种 ,系统的研究了旱作大豆在不同密度、施肥量处理下 ,氮、磷、钾平衡吸收关系。结果表明 :大豆一生中植株氮、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直线相关关系 ,每形成 1kg干物质 ,需协调吸收氮素 (N ) 0 .0 2 6kg ,磷素 (P2 O5) 0 .0 0 2 2kg ,钾素(K2 O) 0 .0 0 4 9kg ;每吸收积累 1kg氮素 (N ) ,需协调吸收积累磷素 (P2 O5) 0 .0 84 5kg ,钾素 (K2 O)0 .1 799kg。产量 2 6 2 5kg以上旱作大豆群体 ,每生产 1 0 0kg大豆子粒需N :6 .1 2kg ,P2 O5∶0 .5 3kg ,K2 O∶1 .1 0kg。更多还原

【Abstract】 Taeking Mengdous soybean variety as the experiment matarial the relation among balance absorption for dry farming soybean plants to N.P.K ander different density and fertilizer amount was studieol in Inner Monsolia. The result showed that there were sisinficant linear correlation among the aclumulation of N.P.K and between that and the accumulation of dry mater in soybean plants. It needs 0.0267kg∶N, 0.0021 kg∶P 2O 5,0.0047kg∶K 2O to produce 1 kg dry matter; it needs 0.0774kg∶P 2O 5,0.1744kg∶K 2O to assimilate 1.0kg∶N.It needs 6.12kg∶N,0.53kg∶P 2O 5,1.10kg∶K 2O to produce 100kg grain yield.更多还原