【摘要】 通过盆栽试验结果表明 ,施用钾肥能使大豆根瘤数、根瘤重增加 ,有效根瘤数增多 ,大豆干物重增加显著 ,经 13点的田间小区试验表明 ,每公顷的耕地施 K2 O 90～ 15 0 kg,能使大豆增产 9.15 %～ 37.0 5 % ,差异均达到显著水平 ;钾肥底施效果好于苗期追施 ;施钾大豆籽粒蛋白质含量增加 1.5 9%～ 4 .78% ,脂肪含量降低 3.80 %～ 4 .74 %。更多还原

【Abstract】 The experimental results through pot culture show that potassium application to soybean boosts number of nodules,weight of nodule,and number of effective nodules.Drywe ight of soybean increase significantly.Then,the small distvict experimental results in field show:Ninety to one hundred and fifty kilogrum K 2O per hectare is applied in soybean,which make yields boosted by 9.15%~37.05%,the differences are all significant;The effect of base application with potassium fertilizer is better than that of top application;Potassium fertilizer application enable seed’s protein content boosted by 1.59%～4.78% and fat content dropped by 3.80% ～4.74%.更多还原