杨凌区畜禽粪污消纳潜力测算及养殖污染风险评价

Estimation of the Potential of Livestock and Poultry Manure Absorption and Risk Assessment of Breeding Pollution in Yangling District

以陕西杨凌高新农业技术产业示范区为研究区,基于2021年杨凌区畜禽养殖场户调查数据和农地利用统计数据,对区内养殖量、养殖结构、农地粪污消纳水平等信息进行分析。结果表明,杨凌区农地可消纳畜禽粪染110814猪当量,实际产生的需要本地消纳的粪污为113933猪当量,存在明显的环境污染风险,需要从限制养殖量、提升第三方粪污处理水平和全面引导养殖场户供肥与附近农户用肥的衔接等方面进行调控。

Taking Yangling High tech Agricultural Technology Industry Demonstration Zone in Shaanxi Province as the research area,based on the survey data of livestock and poultry farmers in Yangling District in 2021 and the statistical data of agricultural land utilization,this paper analyzes the information such as the breeding amount,breeding structure,and the level of rural land waste absorption.The results show that the farmland in Yangling District can absorb 110814 pig equivalent of livestock and poultry manure,and the actual fecal waste that needs to be absorbed locally is 113933 pig equivalent.There is an obvious risk of environmental pollution,which needs to be regulated from the aspects of limiting the breeding amount,improving the level of third-party fecal waste treatment,and comprehensively guiding the connection between the farm households'fertilizer supply and the nearby households'fertilizer use.