摘要
[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。
[Aims] This study aims to guide the scientific control of Grapholitha molesta on peach and to guarantee the quality and safety of agro-products. [Methods] Field experiment was conducted to evaluate the efficacy and final residue of streptozotocin benzoate, Bacillus thuringiensis, chlorine cyanogen chrysanthemum ester and lufenuron.[Results] The efficacy results of field trial showed that the control effects of emamectin benzoate 5% SC（14, 20 mg a.i./kg）and B. thuringiensis 16000 IU/mg WP（25 g per peach tree） on peach G. molesta are better than Alpha-cypermethrin 50 g/L EC and Lufenuron 50 g/L EC when applied between eggs hatch peak and young larvae peak stages. The final residue results showed that after harvest, the residue of streptozotocin benzoate and chlorine cyanogen chrysanthemum ester were lower than the MRL, respectively. [Conclusions] Considering the pesticide persistence and guideline for application of pesticide, emamectin benzoate 5% SC（20 mg a.i./kg） and B. thuringiensis 16000 IU/mg WP（25 g per peach tree） were recommended to use alternatively in the actual production.
出处
《农药》
CAS
CSCD
北大核心
2016年第3期219-222,共4页
Agrochemicals
基金
2015年江苏省特经作物安全用药筛选项目
关键词
桃树
梨小食心虫
药效比较
残留分析
peachtree
Grapholitha molesta
pharmacy comparison
residue analysis
