我国农业面源污染对水体的影响及防治措施

The Effect of Non-point Source Agricultural Pollution on Water Body and its Control

通过分析中国化肥用量的变化与湖泊富营养化进程,揭示了农业面源污染的增加与水体污染的加重几乎同步,农业面源是造成水环境污染的重要因素。从农业面源污染负荷大、污染复杂和防治难度大三方面指出中国农业面源防治的艰巨性和长期性。最后提出建立防治农业面源污染的政策和法规、推广先进的科学技术和加强生态建设是防治中国农业面源对水体污染的重要措施。

The variety of the count of chemical fertilizer and the course of lake eutrophication were analyzed in this paper.h were posted that the increasing amount of pollution from agricuhural non-point sources and the depravation of water body pollution were isoehronously nearly ,and the pollution from agricultural non-point sources was the main factor causing water body pollution.The Long-term and hardship of the prevention and cure of the pellution from agricultural non-point sources were pointed out through the agricultural non-point source＇s large loading,complexity and difficulty.In the last,the establishment of the pelicy and code of the prevention and cure of the pollution from agricultural non· point sources, the pepularizatiou of advanced technology, and the strengthening ecological rehabilitation were the main countermeasures for the prevention and cure of the pollution from agricultural non-point sources.