We forecasted potential of gold mine resource in Wulaga Au geochemical block in the north of Jiamusi block by using the method of ultra-low density geochemical survey.

运用超低密度地球化学调查方法，对佳木斯地块北缘乌拉嘎金地球化学块体的金矿资源潜力进行了预测。

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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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Methods Using the method of documentation investigation and field survey.

方法实地调查和文献调查相结合。

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