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合理使用化学杀虫剂不但能有效的控制害虫密度,延缓抗药性的产生,并且能减少经济浪费和环境污染，大量高效低毒残效期长的化学杀虫剂的开发使用，对
Rational use of chemical insecticides not only can effectively control the pest density, delay the emergence of drug resistance, and can reduce economic waste and environmental pollution, a large number of high efficiency and low toxicity residual pesticide long development and use of pesticides,