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在窄行密植栽培条件下 ,利用合丰 2 5 ,通过种肥混施磷酸二铵和硫酸钾 ,种肥不同施氮量及不同生育时期追氮试验 ,明确大豆宽台窄行密植栽培的施肥技术 ,结果表明 :种肥混施磷酸二铵和硫酸钾以 19kg/ 667m2 最好 ,比不施肥对照增产 5 9.6% ,比其它处理增产 2 .8% 2 2 .8% ;种肥在施 :P2 O55 .3kg/ 667m2 ,K2 O 2kg/ 667m2 基础上以施纯氮 6kg/ 667m2 最佳 ,比对照增产 2 0 .78% ,比其它处理增产 2 2 % 4 4 % ,追氮效果以开花加结荚期两次追氮的效果最佳 ,比对照增产 2 5 .76%。
Under the condition of narrow row and close planting, the fertilization of Hegang 2 5 was carried out to clarify the fertilization of narrow width and close planting of Soybean by using mixed fertilizers such as diammonium phosphate and potassium sulfate, different amount of nitrogen fertilizers and nitrogen uptake test at different growth stages The results showed that: the best fertilization was 19kg / 667m2 of diammonium phosphate and potassium sulfate, 59.6% more than the non-fertilization and 2.8% 2.2.8% P2 O55 .3kg / 667m2, K2O2kg / 667m2 on the basis of the application of pure nitrogen 6kg / 667m2 the best, 20.7% more yield than the control, compared with other treatments yield 22.4% 4,2% The best effect of topdressing nitrogen during the podding stage was 25.76% higher than the control.