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我场发生盲蝽为害茶树始于1982年,当时3—4月份首先在红岭队管理粗放的茶园陆续发现可可盲蝽为害春茶。初期虫口密度为每平方市尺0.5个,到9月中旬虫口密度增加到11个。个别严重茶园高达30个,11月份全场普查,盲蝽为害面积计有400亩,占茶园总面积的16%。估测当年茶青受害减产占年计划的6%。1983年我们积极采取措施,做好防治工作,春茶和秋茶基本安全过关,全年茶青受害减产率约在2%左右。很据田间初步观
My field of planthopper damaging tea began in 1982, when the first 3-4 months of the Hongling team extensive management of the tea plantation gradually found cocoa planthopper damage spring tea. The initial population density per square foot 0.5, to the mid-September insect population density increased to 11. Individual serious tea up to 30, the audience census in November, the area of 400 acres of planthopper damage accounted for 16% of the total area of the tea plantation. It is estimated that the loss of teas produced during the current year accounted for 6% of the annual plan. In 1983, we took active measures to prevent and control the disease. Spring and autumn tea cross the border. The reduction rate of tea turmoil in the whole year is about 2%. Very early field view