Study On The Countermeasures For The Control Of Agricultural Non-point Source Pollution In The Small Watershed Of Quanhe River In Jieshou City

The generation of agricultural non-point source pollution can not be separated from the related activities of agricultural production and residents’ life,the unreasonable use of agricultural chemicals in farmland planting,the waste produced in the life of rural residents,the pollutants that have not been qualified for treatment,and so on.At present,it has become an important means to prevent and control small watersheds in agricultural environment and non-point source pollution.According to the source and characteristics of agricultural non-point source pollution in small watershed,the evaluation and comprehensive management of agricultural non-point source pollution in small watershed are beneficial to the improvement of ecological,economic and social benefits.In order to understand the situation of agricultural non-point source pollution in the small watershed of Quanhe River in Jieshou City.Through the field visits to the farmland pollution sources,aquaculture pollution sources and living pollution sources in 11 administrative villages in the four towns of Tao Miao Town,Wang Ji Town,Dai Qiao Town and Quan Yang Town in this typical small watershed,the survey data related evaluation and analysis use the equal standard pollution load method.This paper compares and analyzes the pollution intensity of each pollutant,and puts forward some reasonable suggestions,which can provide theoretical reference for the protection of ecological environment in the region and promote the life of river basin The adjustment of production mode provides an effective basis for the control of agricultural non-point source pollution in the small watershed of Quanhe River in Jieshou city.The results showed that the total pollutant quantity and pollution load rate of farmland pollution sources were 17.44 t and 3.12 t respectively;the total pollutant loss and pollution source load of aquaculture were 163.37 t and 29.22%,respectively;the maximum loss and pollution load were t 378.31 and 67.66%,respectively;among the three main evaluation factor COD、TN、TP,the highest pollution load rate was COD,80.39%,TN pollution.As the main source of agricultural non-point source pollution in Quanhe small watershed of Jieshou city,the pollution load rate of TP is 2.73%.In the treatment of agricultural non-point source pollution in this small watershed,we should vigorously develop green,ecological and circular agriculture,strictly control the pollution of livestock and poultry breeding,increase the protection of rural ecological environment,and strengthen the government’s overall guidance in the control of agricultural non-point source pollution.