Control Effects of Four Kinds of Insecticides against Empoasca vitis Gothe

Field test results showed that 24% Chlorfenapyr SC and 15% Indoxacarb EC had quick availability and long duration against Empoasca vitis Gothe. The control effects of 450 mL/hm2 24% Chlorfenapyr SC and 330 mL/hm2 15% Indoxacarb were significantly higher than that of 450 g/hm2 10% Imidacloprid WP ,which were ideal pesticides against E. vitis and could be popularized and applied in large area.

Research Progress on Prevention and Control Technology of Empoasca vitis Gthe in Tea Garden

The tea green leafhopper Empoasca vitis Gothe, one of major tea insect pests in China's Mainland, grows concealed with small size, rapid reproduction and overlapped generations, which has become the most serious insect pest in tea garden. This paper described the morphological features, damage modes and occur- rence characteristics of E. vitis, and preliminarily summarized the main control methods in recent years. Therefore, from pollution-free and green control perspec- tive, controlling population quantity of E. vitis safely and effectively and reducing the yield loss of tea has become a hot issue in prevention and control of insect pests in tea garden. The paper provided a reference in green comprehensive prevention of insect pests in tea garden.

蜘蛛的种类和捕食策略对假眼小绿叶蝉捕食效率的影响

害虫的生物防治是一项重要的生态系统服务措施。为探究茶园生态系统中蜘蛛群落的动态变化,并比较不同种类和捕食策略的蜘蛛对茶园害虫假眼小绿叶蝉(Empoasca vitis Gothe)的捕食效率,本研究通过野外调查和室内饲养试验相结合的方法,于2012—2013年调查了云南普洱大尖山茶场4月、6月、8月和11月蜘蛛群落的动态变化。此外,在茶园内选取了8种常见蜘蛛,并根据捕食策略将其分为结网等待型蜘蛛和游猎型蜘蛛,在室内模拟茶园生境建立微生态系统,测定每种蜘蛛个体对假眼小绿叶蝉的日捕食量。结果显示,该茶场中蜘蛛的物种数和多度在6月和11月呈现明显的上升,结网等待型蜘蛛占据优势地位;不同种类的蜘蛛对假眼小绿叶蝉的捕食量存在显著差异,游猎型蜘蛛的日捕食量显著高于结网等待型蜘蛛。综上所述,茶园中蜘蛛群落变化与假眼小绿叶蝉的种群动态相关,且蜘蛛的种类和捕食策略会显著影响其对假眼小绿叶蝉的捕食效率。因此,深入了解捕食性天敌的特性有助于更好地预测茶园生态系统中害虫生物防治的效果。

滇红茶区假眼小绿叶蝉动态监测下全年防控模式研究

结合云南省凤庆县茶园假眼小绿叶蝉[Empoasca vitis(Gothe)]的全年动态监测,采用4种绿色防控模式对茶园假眼小绿叶蝉防控效果展开研究,并进行成本核算。分别在6月16日、6月24日、7月22日假眼小绿叶蝉发生的3个高峰期用2次植物源生物农药及1次化学农药进行防控。结果表明,综合3次用药的防控效果以及经济效益,推荐最佳防控模式为修剪+石硫合剂封园+蓝板+生物农药(0.6%鱼藤酮450倍稀释液)+化学农药(6%乙基多杀霉素1000倍稀释液),在该模式的防控下3次药后7 d平均校正防效分别为78.85%、64.650%、76.20%,比常规防治分别增加25.11、41.63、22.68个百分点,产值比常规防治增加2100元/hm^(2),产投比为14.6。