摘要
通过农作物种植面积计算农田畜禽承载量,并利用各类畜禽产排污系数估算区域畜禽养殖量,分析高台县农田畜禽承载量与畜禽实际养殖量的耦合关系。高台县现行种植作物小麦、玉米、蔬菜、绿肥可承载畜禽产生粪污能力为96.14万头猪当量,2019年高台县不同畜种存栏总量折合猪当量为52.85万头,高台县畜禽养殖承载力按猪当量2个/666.67 m^(2),全县畜禽规模养殖粪污土地承载力1.064 t/666.67 m^(2)。全县已承载粪污耕地176.2 km^(2),全县耕地面积398.47 km^(2),其中小麦、玉米、蔬菜、绿肥面积295.87 km^(2),还有102.6 km^(2)耕地需承载30.78万头猪当量粪便,再加上林果地面积也可消纳一定量的畜禽粪污,畜禽粪便利用空间很大。环境承载量为53.7%,低于实际可承载量,说明高台县畜牧业还有一定的环境容量,可以扩大畜禽养殖规模。
The coupling relationship between the carrying capacity of livestock and poultry in farmland and the actual capacity of livestock and poultry in Gaotai county was analyzed by calculating the carrying capacity of livestock and poultry in farmland and estimating the regional livestock and poultry breeding capacity based on the coefficient of pollutant emission from various livestock and poultry.The current capacity of wheat,corn,vegetables and green manure in Gaotai county to carry manure from livestock and poultry is 961,400 equivalent to pigs.In 2019,the total stock of different livestock breeds in Gaotai county amounted to 528,500 equivalent to pigs,the carrying capacity of livestock and poultry in Gaotai county is 2 pig equivalent 666.67 m^(2),and the carrying capacity of livestock and poultry waste land is 1.064 t/666.67 m^(2).The whole county has carried 176.2 km^(2) of manurecontaminated farmland and 398.47 km^(2) of farmland,including 295.87 km^(2) of wheat,corn,vegetable and green manure,and 102.6 km^(2) of farmland need to carry 307.88 thousand pigs'equivalent manure,in addition,the area of forest and fruit can also absorb a certain amount of livestock and poultry waste,livestock and poultry waste utilization space is very large.The environmental carrying capacity is 53.7%,which is lower than the actual carrying capacity,indicating that the animal husbandry in Gaotai county still has a certain environmental capacity and can expand the scale of livestock and poultry breeding.
作者
周国乔
樊自和
向茂红
Zhou Guoqiao;Fan Zihe;Xiang Maohong(Animal Husbandry Technology Promotion Station,Gaotai County,Zhangye City,Gansu Province,Zhangye 734300,China;Cash Crop Technology Promotion Station,Gaotai County,Zhangye City,Gansu Province,Zhangye 734300,China)
出处
《畜牧兽医科学（电子版）》
2021年第11期4-7,共4页
Graziery Veterinary Sciences：Electronic Version
基金
甘肃省科技计划资助(项目编号:20YF3NG039)。
关键词
畜禽养殖
承载力
农田
有机肥
livestock and poultry breeding
carrying capacity
farmland
organic fertilizer
