Using the empirical method, according to the survey datum of 181 producer of non-environmental pollution vegetable in nanjing, the authors study the using pesticide behavior of the producers.

利用实证研究的方法，以南京市181个无公害蔬菜生产者的调查数据为依据，对生产者农药使用行为进行了计量经济分析。

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After analyzing the water pollution in agriculture, the authors point out that irrational sewage irrigation, fertilization and pesticide application were the main origins for non-point pollution.

分析了农业中水污染的情况，指出不合理污灌、施肥、施药是引发面源污染的重要污染源。

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