农业种植对畜禽养殖废弃物承纳能力核算方法研究与应用

基于农业环境保护的相关要求,从畜禽养殖废弃物总氮产生量、处理与利用中氮素损失量、土壤可供氮量、农业种植需氮量、农业种植对氮素利用效率等几方面进行了定量分析。提出了以氮素平衡为核算指标的农业种植对畜禽养殖废弃物承纳能力的新核算方法。利用构建的方法,本研究以湖南省长沙市为例,核算出该地区当前主要作物种植对畜禽养殖废弃物承纳能力,并结合其化肥施用比例,核算出长沙市当前农业种植条件下能承载的最大畜禽养殖量。

Research and Application of Accounting Method in Carrying Capacity of Livestock and Poultry Waste in Agricultural Cultivation

Based on the protection of agriculture environmental, quantitative analysis was conducted on the aspects of the total nitrogen of livestock and poultry waste, the losing amount in its processing and utilization, the available soil nitrogen, requirement and using efficiency of nitrogen in agricultural cultivation. And nitrogen balance was taken as index, a new accounting method in carrying capacity of livestock and poultry waste in the base of agricultural cultivation was proposed. In this thesis, Changsha City of Hunan Province as an example, the accurate carrying capacity of the livestock and poultry waste in current agricultural cultivation was calculated by using the method of constructing. Combined with the proportion of chemical fertilizer in this region, the maximum capacity of livestock and poultry breeding in the conditions of current agricultural planting was calculated.