盐渍化农田有机无机肥配施比例的筛选

Screening of salinization of farmland organic manure and inorganic fertilizer ratio

通过肥料的配施比例条件下,测定土壤理化性质和玉米产量,确定最优肥料配比的盐渍化土壤改良模式。结果表明,不同的肥料配施比例均可改善盐渍化土壤的理化性状,而低比例与高比例有机肥不利于玉米增产。综合评价有机无机肥料配施比例可知,最优模式为:无机肥料(P2O5100 kg·hm-2,K2O 70 kg·hm-2,N 64kg·hm-2),有机肥料(牛厩肥45 m3·hm-2);无机肥含量氮与有机肥含氮量(碱解氮)比值为2:3。

Salinization of farmland to grow corn for many years, using different proportions of organic and inorganic fertilizer, the determination of different soil physical and chemical properties and maize production. The results showed that the screening of these several Fertilizers proportion obtained for corn yield, soil improvement, organic and inorganic fertilizer ratio of： inorganic fertilizer （100 kg· hm2 of P2Os and K20 70 kg. hm2 N 64 kg· hm2）, organic fertilizer （cattle manure 45 m3. hm2）; and inorganic fertilizer nitrogen content of nitrogen and organic fertilizer nitrogen （alkaline hydrolysis N） ratio of 2：3.