Study On Non-point Source Pollution Control Of Agricultural Fertilizer In Dongyuan County

Global surface and groundwater pollution generally comes from non-point source pollution,while agriculture is precisely the main source of non-point source pollution.According to the materials provided by the Agricultural Bureau of Dongyuan County and the Statistical Yearbook of Dongyuan County,the long-term excessive application of chemical fertilizers in Dongyuan County,calculated according to the reduced amount of pure fertilizer,in 2016,the amount of chemical fertilizer applied in cultivated land of Dongyuan County reached 329 kg/ha,far exceeding the internationally recognized safe upper limit of 225 kg/ha for chemical fertilizer application.Long-term excessive application of chemical fertilizers is harmful to soil quality,water quality,food safety,air quality and human health.Through investigation and analysis,it is found that the main causes of non-point source pollution of agricultural fertilizer in Dongyuan County are the limitation of agricultural technology promotion,urbanization development,weak awareness of environmental protection of growers,farmers’ motivation of "economic man",diversification of employment mode of labor force and imperfect land transfer system.When we see the harmful effects of chemical fertilizer pollution on people’s health,the relevant departments must try their best to solve the problems.They should perfect the legislation system of chemical fertilizer pollution,strengthen administrative supervision and management,improve the incentive and guidance mechanism of organic fertilizer application,reform the protection system of chemical fertilizer application,clarify the legal responsibility of chemical fertilizer pollution,and improve the non-point source pollution of agricultural chemical fertilizer.Controlling the ecological compensation mechanism,we should make great efforts to ensure that farmers can apply fertilizer scientifically(i.e.,operate strictly according to the proportion of the instructions or less than the proportion of the instructions,the same below),actively promote agricultural production in Dongyuan County to a new level,and the people can live and work in peace and harmony with nature.The main purpose of this paper is to define the concept of agricultural chemical fertilizer non-point source pollution,relying on the relevant research results of agriculturalchemical fertilizer non-point source pollution control at home and abroad,to conduct field research in Dongyuan County,and at the same time,to use the "Heyuan Statistical Yearbook" and "Dongyuan Statistical Yearbook" to investigate and analyze the harm and current situation of agricultural chemical fertilizer non-point source pollution and the causes of agricultural chemical fertilizer non-point source pollution in Dongyuan County.In order to promote the sustainable development of agriculture in Dongyuan County,realize the win-win situation of economy and environment,and provide scientific basis for the construction of ecological agriculture in Dongyuan County.The study also found that the educational level of farmers’ heads of household,their income level,their awareness of non-point source pollution prevention and control of agricultural fertilizer,whether the heads of household have cadre status,whether farmers participate in the town’s professional cooperatives is proportional to whether farmers apply fertilizer scientifically.Therefore,we should strengthen propaganda and education,guide farmers to apply fertilizer scientifically,promote farmers’ income,and advocate farmers to join the town’s professional combination.Cooperatives play an active role in farmers’ choice of scientific fertilization.