南山白毛茶有机茶园小绿叶蝉防治试验初报

Study on the method of Empoasca Flavescens prevention and control at Nanshan organic tea garden

本文对广西本地历史名茶南山白毛茶有机茶园主要害虫小绿叶蝉进行几种植物源杀虫剂对防治小绿叶蝉的效果试验,BT防治茶园小绿叶蝉药效大田试验,修剪对小绿叶蝉消长的影响试验,净采与洗蓬对茶小绿叶蝉的控制效果试验四种防治技术试验。试验筛选出的苦参碱、楝素、BT制剂、武大绿洲丫丫等安全、有效的生物源、植物源药剂,对小绿叶蝉防治效果都在70%～80%之间。试验表明:春茶结束后,平剪结合喷施植物源农药,防治小绿叶蝉防效达80%以上,控制期超过15d;一次净采"洗蓬"既可控制小绿叶蝉种群9～15d不上升,又可增加鲜叶产量,在人工允许条件下,可以优先采用。

The effect experiments of several insecticides,BT,pruning and clean harvest to control Empoasca Flavescens were conducted at Nanshan tea garden.The results show that several insecticides have control effect ranging from 70%～80%.After spring tea harvest,flat pruning integrated insecticides spray,the effect could be over 80% with more than 15 control days,once clean harvest could control the insect group not increase within 9～15 days as well increase fresh leave yield,which could be applied priority when labors ar sufficient.