农业环境污染源主要包括农业自身污染和工业及城镇转移污染。其中,农业自身污染也即农业面源污染源可以分成两类:一类是由于农业生产前端某些物品的过度投入而导致污染排放,主要包括农药、化肥等化学投入品过度使用形成的污染排放;另一类是农业生产末端产生的废弃物,例如秸秆、畜禽粪便等。转移污染可以分为工业和城市污染两类,分别是工矿企业排放的三废(废水、废气、固废)和城镇生活污水、垃圾等向农业农村转移,导致农产品 Agricultural environmental pollution sources include agricultural pollution itself and industrial and urban pollution transfer. Among them, agricultural self-pollution, that is, agricultural non-point source pollution can be divided into two types: one is pollution caused by over-investment of certain items in the front of agricultural production, mainly including pollution emissions caused by overuse of chemical inputs such as pesticides and chemical fertilizers; The other is the end of agricultural production of waste generated, such as straw, livestock and poultry manure and so on. The transfer of pollution can be divided into two types of industrial and urban pollution, namely, wastes (waste water, waste gas, solid waste) discharged by industrial and mining enterprises and urban domestic sewage, garbage and other agricultural and rural transfer, leading to agricultural products