摘要
蓟马在柠檬开花初期、盛花期和末花期均可对柠檬花造成严重危害。本研究进行了德宏柠檬花期蓟马为害观察、标本采集、种类鉴定,以及大田防治药剂的筛选试验。结果表明,为害柠檬花的蓟马有9种,分别为黄胸蓟马(Thrips hawaiiensis)、杜鹃蓟马(T.andrewsi)、色蓟马(T.coloratus)、棕榈蓟马(T.palmi)、黄蓟马(T.flavus)、西花蓟马(Frankliniella occidentalis)、花蓟马(F.intonsa)、端大蓟马(Megalurothrips distalis)和蓟马属一种(Thrips sp.),其中以黄胸蓟马为柠檬花期蓟马的优势种。供试的7种药剂中,以25%噻虫嗪水分散粒剂3 500倍液、24%灭多威水剂2 000倍液和20%丁硫克百威乳油1 000倍液的防治效果较好,其施药后3d的虫口减退率分别为93.07%、90.90%和81.57%,校正防效分别为95.36%、93.91%和87.64%;施药后5d的虫口减退率分别为97.90%、95.32%和92.75%,校正防效分别为98.75%、97.21%和95.68%。药剂筛选试验为柠檬花期蓟马的大田防治提供了重要的参考。
The early flowering stage, florescence, and the end of florescence of lemon were all damaged by the thrips. Damage, species, and the effects of 7 pesticides on the thrips during lemon flowering period were studied. The results showed that 9 species of thrips were found on lemon flowers, namely Thrips hawaiiensis, T. andrewsi, T. coloratus , T. palmi , T. flavus , Frankliniella occidentalis , F. intonsa , Megalurothrips distalis and Thrips sp. T. hawaiiensis was the predominant species on lemon flowers in Dehong of Yunnan Province. The results of field tests indicated that the efficacy of 25% thiamethoxam WG 3500 ×, 24% methomyl AS 2000 ×and 20% carbosulfan EC 1000 ×were better than the others. After 3 days, the population decline rates of the thrips were 93. 07%, 90. 90%, and 81. 57%, respectively, and the corrected control effects were 95. 36%, 93. 91% and 87.64%, respectively. After 5 days, the population decline rates of the thrips were 97. 90%, 95. 32% and 92.75%, respectively, and the corrected control effects were 98.75%, 97.21% and 95.68%, respectively. The 3 pesticides provided an important reference for controlling thrips at lemon flowering stage in fields.
出处
《植物保护》
CAS
CSCD
北大核心
2013年第1期178-180,共3页
Plant Protection
基金
国家现代农业(柑橘)产业技术体系柠檬综合试验站项目
科技部科技人员服务企业行动项目(2009GJF30028)
国家科技部星火计划重点项目(2008CA029)
关键词
柠檬
花期
蓟马
黄胸蓟马
优势种
药剂防治
lemon
flowering period
thrips
Thrips hawaiiensis
dominant species
chemical control
