稻麦轮作猪粪-秸秆还田的环境经济效益研究（英文）

Study on Environmental and Economic Benefits of Rice and Wheat Rotation with Swine Manure-Straw Returning

[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] The aim was to investigate the application effect of swine manure-straw returning and to determine the best mode. [Method] A field experiment under rice and wheat rotation with different swine manure-straw treatments was con- ducted to study the growth characters and output of rice and wheat, calculate the economic benefit and carbon dioxide emission reduction, and analyze the best mode of swine manure applying-straw returning. [Result] The swine manure-straw returning was conducive to the growth of crop, the highest outputs of rice and wheat were on the treatment of ＂30% swine manure and 20% straw and 50% chemical fertiliz- er＂, they were 7 874.57 and 6 427.00 kg/hm^2, and saved cost about 5 146.35 Yuan/hm^2, increased input 5 312.56 and 3 931.93 Yuan/hm^2, the greenhouse gas e- mission reduction was 1.30 t/hm^2 （calculated according to carbon dioxide on a dry basis）. [Conclusion] The treatment of ＂30% swine manure and 20% straw and 50% chemical fertilizer＂ was the best mode of swine manure-straw returning.