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[目的]为探明猪粪-秸秆还田的应用效果,确定最佳还田模式。[方法]通过稻麦轮作田间试验,开展猪粪-秸秆还田处理对稻麦生长形状及产量的影响研究,统计分析其经济效益及二氧化碳减排量,对比分析出最佳的猪粪-秸秆还田模式。[结果]猪粪-秸秆还田有利于稻麦的生长,在“30%猪粪氮+20%秸秆氮+50%化肥氮”还田模式下,稻麦产量为最高,分别为7 874.57 kg/hm~2和6 427.00 kg/hm~2,且稻麦轮作一年可节约成本5 146.35元/hm~2,稻麦分别增收5 312.56元/hm~2和3 931.93元/hm~2,温室气体平均减排量为1.30 t/hm~2(按CO_2干基计算)。[结论]因此,建议“30%猪粪氮+20%秸秆氮+50%化肥氮”模式为猪粪-秸秆还田的最佳施肥模式。
[Objective] To determine the application effect of pig manure - straw returning to the field and determine the best returning pattern. [Method] The effects of pig manure-straw returning on the growth shape and yield of rice and wheat were studied by field experiment with rice and wheat. The economic benefits and carbon dioxide emission reduction were statistically analyzed, and the best pig manure-straw Returning field mode. [Result] The pig manure - straw returning was beneficial to the growth of rice and wheat. Under the model of “30% pig manure nitrogen + 20% straw nitrogen + 50% fertilizer nitrogen” returning, the yield of rice and wheat was the highest, which were 7 874.57 kg / hm ~ 2 and 6 427.00 kg / hm ~ 2, respectively, and the cost of rice and wheat rotation could be saved by 5 146.35 yuan / hm ~ 2 in one year and 5 312.56 yuan / hm ~ 2 and 3931.93 yuan / 2, the average emission reduction of greenhouse gases 1.30 t / hm ~ 2 (calculated by CO_2 dry basis). [Conclusion] Therefore, it is suggested that the optimum fertilization mode of “pig manure - straw return to field” is “30% pig manure nitrogen + 20% straw nitrogen + 50% fertilizer nitrogen”.