为了解我国各地区羊粪尿产量及其资源化利用潜力,本研究依据统计年鉴数据和粪尿产排污系数,估算了2021年我国各省份羊粪尿产生量、羊粪尿肥料化和能源化利用潜力,进一步测算了羊粪尿养分农田耕地负荷.结果表明,2021年全国羊粪尿总产生量达2.91亿t,其中总氮(TN)、总磷(TP)、总钾(TK)含量分别为91.08万、19.28万t和73.89万t,可有效替代氮肥(以尿素计)255.31万t、磷肥(以P2O5计)108.45万t、钾肥(以K2O计)191.82万t,可产沼气165.95亿m3,具有较高的肥料化与能源化利用潜力.青海和西藏两省份农田耕地负荷居全国第一和第二,消纳羊粪尿时,应充分考虑耕地、农牧交错带、林地和草地等多种土地类型.
In order to understand the potential utilization of sheep manure and urine,in this study manure and urine production,potential fertilizer and energy utilization of manure and urine and the cropland load of manure and urine in the sheep industry in China in 2021 were estimated.Related data was obtained from the statistical yearbook and the pollutant producing and discharging coefficient.The results show that in 2021,the total sheep manure and urine amount produced in China reached 291 million tons,of which the total nitrogen(TN),total phosphorus(TP)and total potassium(TK)contents have reached 910 800,192 800 tons and 738 900 tons respectively,which can effectively replace 2.553 1 million tons of nitrogen fertilizer(calculated by urea),1.084 5 million tons of phosphorus fertilizer(calculated by P2O5),and 1.918 2 million tons of potassium fertilizer(calculated by K2O),as well as producing 16.595 billion cubic meters of biogas.The potential fertilizer and energy utilization of sheep manure and urine is high.The cropland loads in Qinghai and Tibet rank first and second,respectively,in China.When utilizing sheep manure and urine,full consideration should be given to various land types,such as cultivated land,farming pastoral ecotone,forest land and grassland.
邓茹丹;王国英;李丹阳;李国学;袁京
中国农业大学资源与环境学院,农田土壤污染防控与修复北京市重点实验室,北京 100193
环境科学
羊粪尿;养分;肥料化;能源化;耕地负荷
sheep manure and urine;nutrient;fertilization;energy regeneration;cropland load
《农业资源与环境学报》 2024 (001)
155-163 / 9
财政部和农业农村部国家绒毛用羊现代农业产业技术体系(CARS-39-19) China Agriculture Research System of Ministry of Finance of the PRC and Ministry of Agriculture and Rural Affairs of the PRC(CARS-39-19)
10.13254/j.jare.2022.0772
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