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茶叶蝉(Empoasca SP.)是本省主要害虫之一。在1959—1965年的研究,闽东一年发生12—13代,高山茶园8—9代。成虫寿命:夏季羽化的为1个月,秋季羽化的为7个月,冬季继续取食为害。每雌虫每天能产卵3—10粒以上。卵于顶芽下第二、三叶间的茎内最多,二叶以上及三叶以下均少,少数在叶柄、主脉内。5—9月间,卵期5—7天,若虫期7—8天。为害盛期一般在5—6月及9—10月,高山茶园在7—9月。防治方法:在11月下旬至次年3月中旬喷用乐果、马拉松等,消灭越冬成虫,先除草后喷药可提高效果;在其他时间内可根据虫口发生情况酌情用药。
Empoasca sp. Is one of the province’s major pests. In the 1959-1965 study, 12-13 generations occurred in Mindong in the year and 8-9 generations came from highland tea gardens. Adult life expectancy is 1 month in summer eclosion and 7 months in autumn and continues to be eaten in winter. Each female can spawn 3-10 capsules or more per day. Eggs in the top of the bud under the second, most of the stems between the three leaves, leaves more than two and less than three leaves, a few in the petiole, the main vein. From May to September, eggs 5-7 days, nymphs 7-8 days. Harmful duration is generally in May-June and September-October, alpine tea plantations in July-September. Prevention and treatment methods: In late November to mid-March next year spray dimethoate, marathon, etc., eliminate the overwintering adult, the first herbicidal spraying can improve the effect; at other times according to the occurrence of insects as appropriate medication.