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依托于粮豆轮作耕作、栽培制度建立项目(子任务编号:CARS-04-01A-02),研究长春地区大豆—玉米轮作条件下有机肥与化肥不同施肥方法对玉米产量表现和土壤理化性质的影响,为农田施肥方法提供理论支持。结果表明,有机肥与化肥最佳搭配方式是85%化肥+1t有机肥,初步判断1t有机肥可以替代25%的化肥;收获后土壤速效N、P、K,土壤有机质和土壤容重比耕种前分别减少28%、9.5%、15%、7.3%和8.7%。研究认为,大豆—玉米轮作种植模式条件下可以以有机肥为主,有机肥用量在3t/hm~2;同时施加化肥时可以适当减少N肥的施用,约减少13.8%。
Relying on the project of cultivation of tillage and cultivation system (Sub-task No .: CARS-04-01A-02) based on grain bean rotation, the effects of different manners of fertilization and chemical fertilizers on yield and soil physicochemical properties of maize under soybean-corn rotation in Changchun were studied Influence, provide theoretical support for farmland fertilization methods. The results showed that the optimal combination of organic manure and chemical fertilizer was 85% chemical fertilizer and 1 ton organic fertilizer. The preliminary conclusion was that 1 ton organic manure could replace 25% chemical fertilizers. After harvest, soil available N, P, K, soil organic matter and soil bulk density Decreased by 28%, 9.5%, 15%, 7.3% and 8.7% respectively. The results showed that organic manure could be dominated under the soybean-corn rotation cropping system with organic manure at 3t / hm ~ 2. The application of fertilizers at the same time could reduce the application of N fertilizer by about 13.8%.