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对浙江省46个县（市、区）、58个库点的100个品系试虫进行防虫磷敏感性鉴别。结果表明：29个玉米象品系中，敏感品系21个，占82．8％，轻度抗性品系5个，占17．2％。无显著抗性品系；29个谷蠹品系中，敏感品系23个，占79．3％，轻度抗性品系6个，占20．7％，无显著抗性品系；42个赤拟谷盗品系中，轻反抗性品系32个，占76．2％，显著抗性品系10个，占23．8％，无敏感品系。对11个代表品系试虫进行抗性程度测定，结果表明：最高抗性系数，玉米象为0．97，谷蠹为3．02．赤拟谷盗为10．6。上述数据为分析抗性发生和发展规律，合理使用防虫磷，制定延缓或防止害虫产生抗性的新对策提供依据。
Insecticidal and P sensitivity of 100 strains of test insects in 46 counties (cities and districts) and 58 depots in Zhejiang Province were evaluated. The results showed that among 29 maize lines, there were 21 susceptible lines accounting for 82.8% and 5 lines with mild resistance, accounting for 17.2%. There were 23 susceptible lines in 29 Rhizoma alopecuroides strains, accounting for 79.3%, 6 lines with mild resistance, accounting for 20.7% Among the lines, 32 were light-resistant lines, accounting for 76.2%, 10 were significant resistant lines, accounting for 23.8%, and no sensitive lines. The resistance of 11 representative strains was tested. The results showed that the highest resistance coefficient was 0.97 in corn and 3.02 in Rhizoctonia. Tribolium is 10.6. The data provided the basis for the analysis of the occurrence and development of resistance, the rational use of pest control, and the development of new countermeasures to delay or prevent pest production.