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[目的]指导桃树梨小食心虫的科学防治,保障农产品质量安全。[方法]通过田间原位试验,对甲氨基阿维菌素苯甲酸盐、苏云金杆菌、顺式氯氰菊酯和虱螨脲开展田间药效试验与最终残留验证试验。[结果]在卵孵高峰至低龄幼虫高峰期防治桃树梨小食心虫,5%甲氨基阿维菌素苯甲酸盐SC施用剂量采用14、20 mg a.i./kg,16000 IU/mg苏云金杆菌WP采用制剂量25 g/株,其防治效果好于50 g/L顺式氯氰菊酯EC与50 g/L虱螨脲EC。桃收获后,甲氨基阿维菌素苯甲酸盐、顺式氯氰菊酯在果实内残留均低于其MRL值。[结论]从持效期和农药使用准则考虑,在生产中可选用5%甲氨基阿维菌素苯甲酸盐SC 20 mg a.i./kg和16000 IU/mg苏云金杆菌WP制剂量25 g/株,交替使用。
[Objective] To guide the scientific prevention and cure of peach pears and protect the quality and safety of agricultural products. [Method] The field efficacy trials and final residue validation tests of emamectin benzoate, Bacillus thuringiensis, cypermethrin and lufenuron were carried out in field experiments. [Result] The control dose of 5% emamectin benzoate SC was 14,20 mg ai / kg and 16,000 IU / mg Bacillus thuringiensis WP With the dosage of 25 g / plant, the control effect was better than 50 g / L cisplatin EC and 50 g / L lufenuron EC. After harvest, the emamectin benzoate and cypermethrin residues in the fruit were lower than the MRL value. [Conclusion] Considering the persistence period and pesticide use criteria, 5% emamectin benzoate SC 20 mg ai / kg and 16000 IU / mg Bacillus thuringiensis WP could be used in the production of 25 g / plant Alternate use.