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为评价高效氯氟氰菊酯在不同生态环境苹果园的降解行为。在昆明、北京和太原进行田间试验。结果表明,高效氯氟氰菊酯在苹果及土壤中的降解符合一级动力学消解模式,苹果中降解半衰期为17.8～24.0 d,土壤中半衰期为12.1～15.8 d。苹果和土壤中最终残留量分别是0.015～0.051 mg/kg,﹤0.01～0.027 mg/kg,低于我国规定的最高残留限量(MRL值)0.2 mg/kg。三地的气候条件和土壤理化性质有差异,但高效氯氟氰菊酯在苹果和土壤中的降解行为基本一致。在不同环境苹果园使用高效氯氟氰菊酯,其残留对苹果的安全质量不会造成影响。
To evaluate the degradation behavior of lambda-cyhalothrin in apple orchard in different ecological environments. Field trials in Kunming, Beijing and Taiyuan. The results showed that the degradation of lambda-cyhalothrin in apple and soil was in accordance with the first-order kinetic digestion model. The half-life of degradation was 17.8-24.0 d in apple and 12.1-15.8 d in soil. The final residues in apple and soil were 0.015 ~ 0.051 mg / kg, <0.01 ~ 0.027 mg / kg, which were lower than the MRL of 0.2 mg / kg in China. The climatic conditions and soil physical and chemical properties of the three places are different, but the degradation behavior of lambda-cyhalothrin in apples and soil is basically the same. Use of cyhalothrin in apple orchards in different environments will not affect the safety and quality of apples.