昆明市分瓣臀凹盾蚧为害情况调查及防治研究

Investigations on damages caused by Phenacaspis kentiae Kuwana and its chemical control

对昆明市12个具有代表性的公园和景点进行了分瓣臀凹盾蚧为害情况调查,并进行了不同药剂对分瓣臀凹盾蚧的防治效果试验。调查结果发现,分瓣臀凹盾蚧在昆明市的为害比较严重,且分布非常广泛,在昆明市东至昙华寺,南至海埂,西至西山公园,北至黑龙潭的茶花、桂花、茶树栽培区均有该虫的分布为害。药剂防治试验结果表明,菊酯类药剂2.5%溴氰菊酯乳油、2.5%氯氟氰菊酯乳油和低浓度有机磷类药剂40%杀扑磷乳油对分瓣臀凹盾蚧都有较好的防治效果,其中40%杀扑磷乳油的效果最好,其2500倍液的校正防效可达95.5%。

The investigations on damages caused by Phenacaspis kentiae Kuwana have been conducted in 12 representative parks and view spots in Kunming City and the experiment on its control by different pesticides has been carried out. The data revealed that Phenacaspis kentiae Kuwana caused serious threats to the camellia, sweet osmanthus and tea plantations and these pests are widely distributed in the areas surrounding Tanhua Temple in East Kuming, Haigeng in South Kuming, Xishan Park in West Kunming and Heilongtan in North Kunming. The results of chemical control showed that 2.5% deltamethrin EC, 2.5% eyhalothrin EC and 40% methidathion EC had better effects on controlling Phenacaspis kentiae Kuwana. Among them, the effect of 40% methidathion EC was found to be the best. It was found that 2500 times dilution of 40% methidathion EC resulted in 95.5% control on the pest.