武汉地区茶树假眼小绿叶蝉种群的消长动态

2010—2011年，采用拍网法对武汉地区茶树假眼小绿叶蝉成、若虫的消长动态进行调查，并评价4种杀虫剂对茶树假眼小绿叶蝉的防治效果。结果表明：武汉地区茶树假眼小绿叶蝉种群消长动态趋势总体相似，均呈现2个虫口发生高峰，第1次高峰在6月上旬至7月中旬，第2次高峰在9月中旬至11月中旬，第1次高峰虫量多，第2次高峰持续时间较长；成、若虫的发生期有所不同，若虫发生期为4月上中旬至11月下旬，成虫全年可见。150 g/L茚虫威乳油、240 g/L虫螨腈悬浮剂、22%噻虫•高氯氟微囊悬浮–悬浮剂对假眼小绿叶蝉防效见效快，药后1 d防效达61%～88%，药后3 d防效均在90%以上。

Population dynamics of Empoasca vitis on tea plant in Wuhan and the screening of insecticides for its control

A preliminary investigation on the population dynamics of Empoasca vitis including adults and nymphs was conducted on conventional tea plantations of Wuhan from 2010 to 2011 and the control effects of 4 insecticides on the leafhopper (E. vitis) were evaluated. The results showed that the population dynamics of E. vitis were generally similar between 2010 and 2011 in Wuhan, and there were two peaks of abundance each year during which the first peak appeared from early June to middle July, and the second peak occurred from middle September to middle November. The first peak showed larger amount of E. vitis, while the second peak lasted longer. The occurred periods of adults and nymphs were different, nymphs arrived from middle April to late November, while the adults could be observed throughout the year. The control efficiencies of 15% indoxacarb EC, 24% chlorfenapyr SC and 20% Thiamethoxam and Lambda Cyhalothrin (9.4% lambda-cyhalothrin and 12.6% thiamethoxam ZC) on small green leafhopper were 61%88% at 1 day after administration, and above 90% at 3 days after administration, indicating these insecticides were effective.