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大豆生长中后期叶面喷洒肥液,具有见效快、成本低、效益高的特点,每斤化肥能增产大豆6—15％,值得农户推广应用。1、喷氮肥液:大豆初花期亩用1—2斤尿素,对水60—100斤喷洒,可减少大豆落花率,增加1—2克百粒重。2、喷磷肥液:大豆花前亩用三料磷肥2斤溶在10斤水中,滤出残渣后再将肥液加入50斤水喷洒,能促使大豆提前成熟2—4天,增加粒数和粒重。3、喷氮磷肥液:大豆花期亩用2斤过石或二铵加1.2斤尿素,先
Soybean growth in the late foliar spray fertilizer, with fast, low cost, high efficiency, yield per kilogram of chemical fertilizer can increase soybean 6-15%, it is worth to promote the use of farmers. 1, spray nitrogen solution: Soybean early flowering acres with 1-2 kg of urea, spraying 60-100 pounds of water, can reduce the rate of soybean drop, increase 1-2 grams of 100 tablets. 2, Phosphate fertilizer solution: soybean acre with three pounds of phosphate fertilizer 2 kg dissolved in 10 pounds of water, then filter out the residue and then added 50 pounds of fertilizer to spray water, beans can promote maturity 2-4 days to increase the number and Grain weight. 3, spray nitrogen phosphate fertilizer: Soybean acres with 2 pounds over stone or diammonium plus 1.2 kg of urea, first