浙西北茶区茶尺蠖对联苯菊酯等药剂抗药性初步测定

The pesticide resistance of ectropis obliqua hypulina in Northwest Zhejiang tea fields

茶尺蠖是浙江茶叶主产区的主要害虫之一,其抗药性问题日益突出,严重影响茶叶生产,测定浙江茶叶主产区茶尺蠖对常用药剂的抗药性对其合理防治具有重要意义。测定了浙江省萧山区、西湖区、富阳区、余杭区和安吉县等茶叶主产区茶尺蠖对联苯菊酯、溴氰菊酯、功夫菊酯和辛硫磷四种常用药剂的抗药性。结果显示:浙江省主要产茶区茶尺蠖种群对以上四种常用药剂均产生了一定程度的抗性,且对辛硫磷产生的抗性水平最高,其次是联苯菊酯,几个主要产茶区中以余杭区茶尺蠖的抗性水平最高,这与其茶园管理模式有密切关系。浙江省各茶叶产区需要根据本地茶园管理模式合理选择药剂防治茶尺蠖。

Ectropis pesticide resistance of the obliqua hypulina is one of the major tea pests in Zhejiang Province. The tea pests has great impact on tea production. The resistances of Ectropis obliqua hypulina to the frequently-used pesticides including bifenthrin, deltamethrin, clocythrin and phoxim were investigated. The results showed that Ectropis obliqua hypulina had resistance to all these four pesticides, among which the resistant to phoxim is the most serious, followed by bifenthrin. There was also difference in methods. The highest the pesticide resistance between tea producing areas and between field management level of resistance was observed in Yuhang District.