Status Of Agricultural Environment And Control Of Agricultural Area Source Pollution--A Case As Yancheng City

Agricultural environment has been paid much attention mainly due to its area source pollution issues. The protection of agro-environment, especially in area source pollution, is key to guarantying the agricultural production quality security, satisfying the requirement of the increasing population, and to facing the challenge of joining into WTO, boosting up agricultural competitive ability and promoting sustainable development in agriculture.Yancheng city is one of the most important cities for agricultural production in Jiangsu province, China, which has been becoming one of the agricultural processing and exporting basis. Thus, it is of the great imminence to the agro-environmental protection and area source pollution control. This paper focused on the origin and harm of the agricultural area source pollution on the basis of the regional survey on the quality of atmosphere, river and soil in Yancheng city. The author summarized the harvest of the agricultural area source pollution control and further proposed the key thread and countermeasure to improving agricultural environment in this area. The agricultural environment was presented in detail. Rural-atmospheric and soil environment quality measure up the National secondary standard (Pureness), however, aqueous environment quality is in great danger and the deterioration of surface water is kept within limits with the pollution extent of middle to light. What's more, ground water is also deteriorating. Aqueous quality has become the core of the agricultural environment. One ultimate reason is the deterioration of agricultural area source pollution, which is manifested in six aspects: overfull pesticide dosage, the increasing fertilization and farming polymeric membrane application, livestock excrement and urine and living sewage emission, and the failure to prohibition of the stalk burning. So far, Yancheng city have made the great achievements in agro-environmental pollution protection, and reproducible energy sources by the methods such as the popularization of anti-adversity breed and pesticide-degradable bacterium and EM, comprehensive utilization of the stalk as reproducible energy sources, identification of reasonable control system and improvement of seedling quality using a big substrate pot. Finally, this paper emphasizes that the basic approach to improving the agricultural environment is just to set up the eco-agriculture, six technical systems, and to provide technical support to the pollution control.