摘要
研究了假眼小绿叶蝉(Empoasca vitis)的寄生蜂缨小蜂(Schizophragma parvulas)和寄生真菌蜡蚧轮枝菌(Lecanicillium lecanii)单独使用和联合使用时对假眼小绿叶蝉种群的控制作用。结果表明,在单独进行控制时(在一个世代内按每株放雌蜂3头的密度释放缨小蜂,或按5×107孢子/mL施菌2次),对假眼小绿叶蝉种群的控制效果分别达到52.7%和50.9%,但下一代假眼小绿叶蝉种群增长趋势指数仍然高于1,表明单独使用寄生蜂缨小和寄生真菌蜡蚧轮枝菌不能有效控制假眼小绿叶蝉种群的增长;缨小蜂和蜡蚧轮枝菌联合使用,对假眼小绿叶蝉种群的控制效果分别达82.9%和90.8%,且下一代假眼小绿叶蝉种群增长趋势指数低于1,表明下一代假眼小绿叶蝉种群数得到有效控制。
The effectiveness of Schizophragma parvulas and Lecanicillium lecanii in controlling tea leafhopper Empoasca vitis populations on tea plants was determined in separated and combined greenhouse experiments.The results showed that spraying L.lecanii（5×107 spores per ml,twice per generation） and releasing S.parvulas（3 female per plant,once per generation）,52.7 and 50.9% of whitefly populations were controlled,respectively.The increasing index of leafhopper population（I） subjected separately to either natural enemies was above 1,indicating the substantial ineffective control of leafhopper population.However,when the two natural enemies were used together with the same rate mentioned above（L.lecanii spraying twice followed by releasing S.parvulas once or twice in one generation）,82.9% and 90.8% of leafhopper populations were controlled.Moreover,the increasing index of leafhopper population subjected to both natural enemies together was below 1,indicating the substantial reduction in leafhopper population.The combined treatments provided a better control effect on leafhopper than separated ones,and there was no contradictory effect between both natural enemies.
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2012年第2期282-287,共6页
Acta Agriculturae Universitatis Jiangxiensis
基金
国家自然科学基金项目(30771452)
农业部948项目(2008Z17)
福建省科技计划重点项目(2007I0004
2010N0006)
关键词
假眼小绿叶蝉
缨小蜂
蜡蚧轮枝菌
协同控制
Empoasca vitis
Schizophragma parvulas
Lecanicillium lecanii
effectiveness
