【作者】 黄长春； 王成树； 黄勃； 李农昌； 蔡顺标； 张新军；

【Author】 Huang Changchun (General Station of Forest Pest Control,Anhui,Hefei,230031) Wang Chengshu Huang Bo Li Nongchang Cai Shunbiao Zhang Xingjun (Auhui Agricnltural University,Hefei 230036)

【机构】 安徽省森林病虫防治总站； 安徽农业大学；

【摘要】 同未制剂的孢子粉相比,白僵菌混合粉剂在林间使用时的飘移程度下降。春季放菌,20d后调查防治效果,混合粉剂为74.27%,孢子粉为55.13%,对照粉拟青霉的防治效果达75.01%。混合粉剂处理对天敌没有影响,处理区和对照区的天敌寄生率差异不显著。处理区鲜蛹重同未处理区比较看出,蛹重减小的差异性显著。更多还原

【Abstract】 The Beauveria mixed dust formulation drifting distance decreased compared with unfomulated conidia when sprayed in forest.The control efficacy of the dust and the unformulated conidia against the larvae of Masson’s pine caterpillars reached 74.27%and 55.13%respectively while the conidia powder of Paecilomyces farinosus were 75.01%.The results also showed there was no negetive effect on the caterpillars’ natural enimies which killed the pests jointly.The consumed weights of pine needles by caterpillars in control plot decreased,thus the fresh weight of pupae decreased signifficantly.更多还原