就农业污染的四个主要来源进行分析，并提出具体防治措施。
This essay tries to analyse the four main sources. If agricultural pollution, at the same time, point out some specific prevention measures.
通过分析农业面源的来源、污染途径，提出了防治污染的具体措施。
We proposed the specific prevention tactics corresponding to pollution through the analyse of the sources of agricultural non-point source and pollution ways.
根据其杂草分布特点，采取农业、物理机械及化学防治措施，能有效控制草害发生与危害。
According to the character of weeds' distribution, adopting agricultural, physical and chemical control may effectively control the occurrence and damage of weeds.
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