广西百色地区有机茶园中主要害虫发生规律及防治技术的研究

Study on the Occurrence Regulation and Control Technology of the Main Diseases and Pest in Organic Tea Orchard in Baise

通过调查结果 ,广西百色地区有机茶园中主要病虫害的种类包括假眼小绿叶蝉、茶跗线螨、茶黄蓟马、茶蚜和茶饼病、茶炭疽病。假眼小绿叶蝉在 4、 7月份有两个发生高峰 ;茶跗线螨和茶黄蓟马早春发生较重。各种害虫都具有一定的趋嫩性 ,其中茶黄蓟马在茶树顶部的种群密度与其它位置差异显著。根据各病虫害的生物学习性 ,采取了强采及植物源药剂相结合等方法 。

In 2003～2004, invetigations on the plant diseases and pest communities in organic Oolong Tea orchard were carried out in Baise. The dominant species were mainly Empoasca(Empoasca)vitis(Gōthe), Polyphagotarsonemus latus(Banks), Scirtothrips dosalis Hood, Toxoptera aurnantii Fonscolombe, Edobasidium rexans Massee and Gloeosporium theae-sinensis Miyake. The population dynamics of Empoasca(E)vitis(Gōthe)within a year displays double peak curve. April and july is the two peak of its population. The occurrence amount of Polyphagotarsonemus latus(Banks) and Scirtothrips dosalis Hood were higher in early spring. All of this pests were tend to burgeon of the tea-trees, the propagation of Scirtothrips dosalis Hood which on the top of the tea-trees was significant. Based on the occurrence regulation and biologic characteristics of this plant diseases and pest, we put forward the effectual control technology, include.picking and botanical pesticides.