蝗虫微孢子虫疾病在青海草原蝗虫种群中的传播  

Transmission of Nosema locustae Disease in Grasshopper Populations in Qinghai Grassland

作　　者：巩爱岐 刘晓健 蒋湘 张龙[2] 

机构地区：[1]青海省草原工作总站,西宁810008 [2]中国农业大学昆虫学系,北京100094

出　　处：《中国生物防治》2003年第3期118-121,共4页Chinese Journal of Biological Control

基　　金：国家自然科学基金项目(39700098)

摘　　要：研究了蝗虫微孢子虫病在青海草原蝗虫种群中的传播途径及其影响因素。结果表明,在小区应用微孢子虫后30d,蝗虫校正虫口减退率达56 45%,感病率为28%;蝗虫虫粪不能携带微孢子虫,牧草携带率从10d的100%下降到40d的33 3%。病害早发生的蝗虫种类对晚发生种类有较强的传播作用,其传播率达26 67%。Field and cage experiments on transmission of Nosema locustae disease in grasshopper populations were conducted in grassland of Qinghai province. The results showed that the number of spores on the leaves of grass decreased with the time after application. And the species of grasshopper occurring early in the season, infected by N. locustae could transmit the disease to the species occurring late by 26 67%. The reduction of grasshoppers was more than 56 45% 30d after treatment with this pathogen and the infection of the survivors was 28%.

关 键 词：蝗虫微孢子虫 青海草原蝗虫 传播途径 虫口密度 生物防治 

分 类 号：S812.6[农业科学—草业科学] S476[农业科学—畜牧学]