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本文在调查研究的基础上,对湖南省农业害虫化学防治中药效明显下降的原因进行了分析,提出了解决这一问题的对策。
Based on the investigation and research, this paper analyzes the reasons why the efficacy of pesticides in agricultural pests in Hunan Province decreased significantly and puts forward the countermeasures to solve this problem.