大连市农业面源污染调查研究

Study on Agricultural Non-point Source Pollution Investigation in Dalian City

本文以大连市为例,调查分析农业面源污染情况。结果发现,大连市农村地区年生活污水和固体废弃物入河量分别为233.9万m^(3)和46807 t;使用的化肥以复合肥和氮肥为主,年使用量分别为192448.0 t和191443.0 t,农药年使用量为53764.0 t;农村畜禽养殖污染负荷严重,远超过农村生活污水和固体废弃物;水土流失导致的污染物入河量共计1721.8 t,水土流失产生的污染物相比其他面源污染较少。

Taking Dalian City as an example,this paper investigates and analyzes the agricultural non-point source pollution.The results show that the annual inflow of domestic sewage and solid waste into the river in rural areas of Dalian City is 2.339 million m^(3)and 46807 t,respectively;the fertilizer used is mainly compound fertilizer and nitrogen fertilizer,with the annual use of 192448.0 t and 191443.0 t respectively,and the annual use of pesticide is 53764.0 t;the pollution load of livestock and poultry breeding in rural areas is serious,far exceeding that of domestic sewage and solid waste in rural areas;the total amount of pollutants into the river caused by water and soil loss is 1721.8 t,and the pollutants caused by water and soil loss are less than other non-point source pollution.