不同间作模式茶园主要病虫害及天敌的调查研究

Investigation of Major Diseases,Pests and Predators in Different Intercropping Tea Plantations

对香樟-茶、野花椒-茶、沉香-茶3种间作模式下茶树主要病虫害及天敌在春茶、秋茶2个生育期的发生数量进行调查。结果表明:茶园中间作香樟、野花椒、沉香对茶园主要病虫害及天敌的影响不一致。香樟间作茶园茶轮斑病和茶赤星病的发病率较对照茶园低,但有增加茶小绿叶蝉的趋势;野花椒间作茶园茶饼病的发病率、茶小绿叶蝉虫害均较对照茶园低;沉香间作茶园茶小绿叶蝉、茶黄蓟马、茶蚜的数量较对照茶园减少,茶轮斑病和茶煤病发病率也较对照茶园降低。

The quantity of major diseases,pests and predators in three different intercropping tea plantations were investigated in spring and autumn. The results showed that intercropping with Cinnamomum hupehanum,Zanthoxylum simulans and Aquilaria crassna had different influences to major diseases,pests and predators in tea plantations. In the tea plantation intercropped with Cinnamomum hupehanum,the occurrence rate of Pestalotiopsis theae（ Sawada） Steyaert and Cercospora theae（ Cav.） Breda were lower than those in control tea garden,while the occurrence of Empoasca pirisuga Matumura showed an increasing tendency.Compared to the CK,the occurrence of Exobasidium vexans Ma- ssee and Empoasca pirisuga Matumura were both lower in the tea plantation intercropped with Zanthoxylum simulans,and the occurrence of Empoasca pirisuga Matumura,Scirtothrips dorsalis Hood,Toxoptera aurantii Boyer,Pestalotiopsis theae and Neocapnodium theae Hara were all decreased when intercropped with Aquilaria crassna.