假眼小绿叶蝉的发生规律及化学防治

Occurrence Regularity and Chemical Control of Empoasca vitis in Tea Plantation

为了有效防治茶树上假眼小绿叶蝉,对贵州省农业科学院茶园假眼小绿叶蝉的发生规律进行调查,并进行了药剂防治试验。结果表明,假眼小绿叶蝉在贵阳1年有2个高峰期,且危害期较长,为5—10月份;10%吡虫啉可湿性粉剂、2.5%高效氟氯氰菊酯乳油、5%啶虫脒.联苯菊酯微乳剂和70%吡虫啉水分散粒剂的速效性好,持效性均在14 d以上,防效在91.7%以上,其中5%啶虫脒.联苯菊酯微乳剂对假眼小绿叶蝉的防治效果、速效性和持效性最好,且用量较低,为22.5 g/hm2。

The occurrence regularity and chemical control effect of Empoasca vitis in tea plantation of Guizhou Academy of Agricultural Sciences were studied to provide the scientific basis for control of Empoasca vitis in tea plantation.The results showed that there were two occurrence peaks of Empoasca vitis in one year,its harm period was from May to October,the effectiveness and control effect of 10% imidacloprid WP,2.5% efficient cyfluthrin EC,5% acetamiprid·bifenthrin microemulsion and 70% imidacloprid WG with good quick action were over 14d and 91.7% respectively.The control effect,quick action and effectiveness of 5% acetamiprid·bifenthrin microemulsion against Empoasca vitis were the best in 12 tested chemical pesticides and its optimum dosage is 22.5g/hm2.