白僵菌871菌株防治茶丽纹象甲的效果
Application of Beauveria bassiana Strain 87l in Controlling Tea Weevil(Myllocerinus aurolineatus)
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摘要: 从罹病的茶丽纹象甲(Myllocerinus aurolineatus Voss)成虫上分离、纯化出球孢白僵菌(Beauveria bassianaVuill)871菌株,对该虫进行了防治试验。结果表明,在盛蛹期用毒土法防治,每公顷施用15～30kg菌粉,可杀除土中65%的幼虫和蛹,出土成虫的感染僵死率达80%以上;成虫期在树冠上用喷雾法防治,每公顷施用7.5～15.0kg菌粉,配制成1×108～2×108个/ml孢子液,一般防效达80%以上,菌药混用、菌药轮用和二次施菌,均可显着提高防治效果,但切忌与杀菌剂混用。该菌株对茶园天敌安全无害。在福建10多个产茶县、市1000hm2的示范推广防治结果表明,防效达80%～90%,持效期1～2年,每公顷获经济效益675元。文中还对该菌株的侵染途径进行了研究。
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关键词:
- 球孢白僵菌871菌株 /
- 茶丽纹象甲 /
- 生物防治
Abstract: B.bassiana 871 was isolated and purified from the dead adult of tea weevil (M.aurolineatus).Under the suitable climatic conditions, 65%controlling effect on larvae and pu-pae could be got by the parasitic fungi-soil method and 80%of adults were infected to death when getting out off the soil witb applying the fungus at the peak periord of pupae.More than 80% of adults were controlled by spraying beauveria solution at adult stage.The parasitic fungi mixed and rotated with cbemicals as well as twice spraying could improve the effect.Most of insecticides used in tea production(except some of fungicides)did not affect the germination of the spores.The for-mulations prepared with this fungus were widely used in a large area of 1000 hm2 in Fujian province.The results proved that the effectiveness lasted for 1～2 years. -
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