茶园用药对假眼小绿叶蝉天敌缨小蜂的影响  

Effect of Pesticides on Egg-parasitoid of Tea Green Leafhoppersat Tea Gardens

作　　者：李慧玲[1] 李鹏[2] 张辉[1] 王定锋[1] 王庆森[1] 曾明森[1] 吴光远[1] 

机构地区：[1]福建省农业科学院茶叶研究所,福建福安355015 [2]淄博市农业技术推广中心,山东淄博255400

出　　处：《福建农业学报》2015年第10期993-996,共4页Fujian Journal of Agricultural Sciences

基　　金：福建省自然科学基金项目(2013J01095);国家茶叶产业技术体系项目(CARS-23);国家星火计划重大项目(2013GA720002);福建省科技计划项目--省属公益性科研院所基本科研专项(2014R1012-1)

摘　　要：采用田间扫网、镜检的方法检查缨小蜂的虫口数量和寄生率,评价茶园几种农药唑虫酰胺、茚虫威等对假眼小绿叶蝉天敌缨小蜂的影响。结果表明化学农药15%唑虫酰胺EC、15%茚虫威EC、2.5%联苯菊酯EC对缨小蜂虫口数量的影响表现为药后3d缨小蜂虫口数量比清水对照显著下降,缨小蜂寄生率表现为3种化学农药药后14d、21d均极显著低于清水对照。唑虫酰胺、联苯菊酯处理区缨小蜂寄生率均低于0.5%藜芦碱SL处理区。15%唑虫酰胺EC、15%茚虫威EC对假眼小绿叶蝉防治效果速效性和持效性均较好、3种化学农药对缨小蜂的影响高于生物农药藜芦碱,表明在缨小蜂生长繁殖期,农药的使用降低了田间缨小蜂的种群数量和寄生率。This study aimed to evaluate the effect of several pesticides used at tea gardens for controlling the tea green leafhoppers（TGLs）on mymarids,a TGL-egg-parasitoid.Sweeping nets and microscopic examination were used to determine the count and parasitism of mymarid population at the sites.It was found that 15% tolfenpyrad EC,15% indoxacarb EC and 2.5% bifenthrin EC significantly reduced the mymarid count as compared to CK（spread with water）after a 3-daypesticide treatments.The parasitism rates of mymarid on the 14 thand the 21 st day after treatments with the pesticides were also significantly lower than CK.The pesticides,15%tolfenpyrad EC and15%indoxacarbEC,were effective and fast in controlling TGLs.All 3 pesticides showed a greater effect on mymarids than the biopesticide,veratridine.It appeared that application of these pesticides negatively affected the population as well as the parasitism rate of mymarid.

关 键 词：假眼小绿叶蝉 缨小蜂 唑虫酰胺 茚虫威 

分 类 号：S435.711[农业科学—农业昆虫与害虫防治]