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针对造成重迎茬大豆减产的两个主要原因 ,即以大豆孢囊线虫为主病虫危害及耕层土壤速效钾、速效锌、有效硼单一消耗 ,而研制开发的肥药结合多功能大豆重迎茬专用肥 (10 - 12 - 8)可显著提高单产 ,改善品质 ,抑制大豆孢囊线虫、根腐病及地下害虫的危害 ,满足重迎茬大豆不同生育阶段对 N,P,K,Mg等大中量及 Zn,B,Mn等微量营养元素的需要。试验示范结果表明 :大豆重迎茬专用肥比农民习惯施肥 (磷酸二铵 +尿素 +氯化钾 )平均增产2 3.5 % ,增产 385 .5 kg/ hm2 ,增收 6 15 .6元 / hm2 ,比等量的磷酸二铵增产 7.8% ,增产 177.1kg/ hm2 ,增收 2 40元 /hm2
In view of the two main causes of heavy cropping soybean yield reduction, that is, the main diseases and insect pests of Soybean cyst nematode and tillage soil available potassium, available zinc, effective boron single consumption, and research and development of fertilizer combined with multifunctional soybean weight The special fertilizer (10 - 12 - 8) can significantly improve the yield and quality, inhibit the damage of soybean cyst nematode, root rot and underground pest and meet the requirement of N, P, K, Mg Such as medium and large amount of Zn, B, Mn and other micronutrient needs. The experimental results show that the special fertilizer of returning stubble to soybean is 23.5% more yield than the conventional fertilizer (diammonium phosphate + urea + potassium chloride), yielding 385.5 kg / hm2 and increasing income by 615.66 yuan / hm2 The same amount of DAP increased 7.8%, increased 177.1kg / hm2, increased income 240 yuan / hm2