寄主和温度对西花蓟马生长发育的影响  

Effects of treating tea plants with exogenous methyl salicylate(MeSA)on the main pests and their natural enemies in tea garden

作　　者：李景柱[1,2,3] 郅军锐 盖海涛[1,2] 

机构地区：[1]贵州山地农业病虫害重点实验室,贵阳550025 [2]贵州大学昆虫研究所,贵阳550025 [3]河北省张北县林业局,河北张北076450

出　　处：《生态学杂志》2011年第3期558-563,共6页Chinese Journal of Ecology

基　　金：公益性行业专项(20080325);贵州省优秀科技教育人才省长专项资金项目(黔省专合字(2007)20号)资助

摘　　要：研究了4种豆科寄主植物及5个不同温度处理对西花蓟马生长发育的影响,并对各虫态的发育起点温度和有效积温进行了分析。结果表明:同一温度条件下,西花蓟马取食不同豆科寄主植物时,各虫态的发育历期差异显著,但不同温度下不同寄主处理间的差异性不同;西花蓟马的未成熟期取食四季豆叶片时发育最快,取食蚕豆叶片时发育最慢,两寄主间存在显著差异;取食同一寄主植物时,不同温度处理下,西花蓟马各虫态的发育历期差异显著,且随温度升高历期缩短,发育速率和温度之间为直线关系;西花蓟马各虫态在不同寄主植物上的发育起点温度和有效积温各不相同,未成熟期取食蚕豆叶片时发育起点温度最低为6.35℃,但需要的有效积温最高为331.36日度。In this study,different concentrations of methyl salicylate（MeSA）were sprayed on the tea plants in a nuisance-free tea garden,and yellow sticky trap was used to investigate the population densities of pests and their natural enemies.No significant effect was observed after 24 h MeSA treatment.However,after 48 h,there was a significant decline in the number of tea green leafhopper and a significant increase in the number of ladybug,spider,syrphid,and parasitoids,as compared with the control,which indicated that exogenous MeSA could induce the natural defense of tea plants to the pests,and further,affect the population densities of pest species and their natural enemies in tea garden.

关 键 词：西花蓟马 寄主植物 温度 生长发育 发育起点温度 有效积温 

分 类 号：S433[农业科学—农业昆虫与害虫防治]