中国生物防治学报2012，Vol.28Issue(1)：62-66,5.
球孢白僵菌可湿性粉剂对马铃薯甲虫的防治效果
Effect of Beauveria bassiana Wettable Powder against Leptinotarsa decemlineata （Say）
摘要
Abstract
The strain 1513 isolated from infected Leptinotarsa decemlineata was purified and identified to be Beauveria bassiana and conserved in agricultural culture collection of china（ACCC） with the number of ACCC32222.To evaluate its biocontrol potential,virulence of the isolate against different instar larvae of L.decemlineata was investigated under different spore concentrations.Results showed that when the temperature was 22 28 ℃,the cadaver rate of 1st 2nd instar larvae increased with the increase of spore concentration.The LC50 values of 9 days after treatment on 1st 2nd instar larvae and 8 days after treatment on 3rd 4th instar larvae of L.decemlineata were 3.09×107 conidia mL 1 and 9.92×107 conidia mL 1,respectively.Eggs of L.decemlineata were not inhibited when the spore concentration was 1×107 conidia mL 1.Field trials in Xinyuan of Xinjiang demonstrated that the mortality of L.decemlineata reached 98.87% when treated with B.bassiana wettable powder at about 2250 g ha 1 after 18 days,and cadaver rate on the earth surface was 53.91%.However,cadaver was only found in the soil with cadaver rate of 19.61% in Nileke of Xinjiang.关键词
马铃薯甲虫/球孢白僵菌/毒力/可湿性粉剂Key words
Leptinotarsa decemlineata/Beauveria bassiana/virulence/wettable powder分类
农业科技引用本文复制引用
邓春生,张燕荣,张曼曼,耿兵,吴伟,付文君,张冬梅..球孢白僵菌可湿性粉剂对马铃薯甲虫的防治效果[J].中国生物防治学报,2012,28(1):62-66,5.基金项目
国家公益性行业(农业)科研专项(200803024 201103026) （农业）
