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中文摘要：
提出了标准成本毒力比较法和标准成本药效比较法，即以一定用量下标准农药的价格作为标准成本，计算其它农药的用药量，进行毒力与药效比较，并将两者运用于防治甜菜夜蛾的农药选择中。与常规方法相比，这两种方法具有简单性、可比性与实用性等特点。
英文摘要：
The toxicity comparison and efficacy comparison based on the standard cost were proposed in this paper, which were regarded the price of the standard pesticide under the certain dose as the standard cost to calculate the doses of the other pesticides and compare the toxicities and efficacies. And the two methods were applied on the pesticide selections of control Spodoptera exigua （Htibner）. Compared with the regular methods, the two methods were simple, comparable and practical etc..
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