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粤西垦区有20多年的种茶历史,1989年,全区茶园面积达2.4万亩,年产干茶3000多吨,已成为我国南方重要的茶叶生产基地。随着时间的推移,各种茶树病虫害相继发生,为害也日趋严重。目前,垦区茶园的主要病虫害有:假眼小绿叶蝉、茶尺蠖、茶黄蓟马、茶卷叶蛾、茶蚜、螨类、刺蛾类、介壳虫类、云纹叶枯病、轮斑病、炭疽病、红锈藻病、圆赤星病、根结线虫病等,其中,假眼小绿叶蝉对生产茶园构成了严重威胁,一般年份,在不防治的情况下,产量损失达30％～40％,发生高峰期,当轮茶减产达70％以上,严重的可造成无茶可采。经过防台,产量损失仍达10％左右。每年全区用于防治害虫的农药达35.5吨,费用60多万
Guangdong reclamation area has more than 20 years of tea history, in 1989, the tea garden area of 24000 mu, with an annual output of more than 3000 tons of dried tea, has become an important tea production base in southern China. With the passage of time, a variety of tea plant diseases and insect pests have occurred, the damage is also increasingly serious. At present, the main pests and diseases of the tea plantation in the reclamation area are: leafhopper, leafhopper, thrips, tea leaf roll moth, tea aphid, acaroid, thorn moth, scale insects, Anthracnose, red rust algae disease, round brown starches disease, root knot nematode disease, etc., among them, green leafhopper hypocotyl pose a serious threat to the production of tea plantations, in general years, without prevention and control of the case, the yield loss of 30% ~ 40 %, The peak occurs, when round tea cut more than 70%, serious can cause no tea recoverable. After anti-Taiwan, the output loss is still up to 10%. Every year, 35.5 tons of pesticides are used to control pests in the region, with a cost of more than 600,000