EB-82灭蚜菌对桃蚜的生物测定及温度、湿度对其毒力的影响  

Biological assay of EB-82 aphidicide on peach aphid and the influence of temperature and humidity on its virulence

作　　者：马江 MA Jiang(Institute of Environment and Sustainable Development in Agriculture,Chinese Academy of Agricultural Sciences,Beijing 100081,China)

机构地区：[1]中国农业科学院农业环境与可持续发展研究所

出　　处：《湖北农业科学》2019年第16期64-65,75,共3页Hubei Agricultural Sciences

摘　　要：研究并比较了6种不同浓度梯度的EB-82灭蚜菌对桃蚜(Myzus persicae Sulzer)的毒力及其与温度、湿度变化的关系。结果表明,桃蚜的死亡率随着EB-82灭蚜菌处理浓度的增加而增大,不同处理浓度梯度之间桃蚜的死亡率存在明显差异;EB-82灭蚜菌对桃蚜的致死中浓度(LC50)为稀释420倍,而EB-82灭蚜菌对桃蚜的LC75为稀释300倍,当EB-82灭蚜菌的稀释倍数小于300倍时,其对桃蚜的死亡率大于75%。EB-82灭蚜菌对桃蚜的毒力在一定的湿度范围内,随温度的不同,变化不明显。The toxicity of EB-82 aphidicide with six different concentration gradients to peach aphid(Myzus persicae Sulzer)and its relationship with temperature and humidity were studied and compared.The results indicated that the mortality of peach aphid increased with the rising of the concentration of EB-82 aphidicide.In addition,the mortality of peach aphid was significantly different between different concentration gradients.The LC50 of EB-82 aphidicide to peach aphid was 420 times dilution while the LC75 was 300 times.Noticeably,the mortality to the peach aphid was higher than 75%if the dilution times lower than 300.The toxicity EB-82 aphidicide to the peach aphid was within a certain humidity range,and the influence of temperature was not obvious.

关 键 词：EB-82灭蚜菌 桃蚜(Myzus persicae Sulzer) 生物测定 温度和湿度 毒力 

分 类 号：S476.12[农业科学—农业昆虫与害虫防治]