摘要
南京裂爪螨为害毛竹、早竹、角竹、哺鸡竹等,被害竹叶背面带有蛛丝网膜,竹叶正面出现枯黄色焦斑,影响光合作用,严重危害致竹叶脱落,影响下年度新竹产量、质量,甚至致老竹枯死。在杭州一年发生6～8代,11月中下旬,以成螨,卵在竹叶背面丝网内越冬,翌年3月中下旬,越冬雌螨产卵,4月上旬卵孵化,10月中旬雌成螨逐渐停止产卵,准备越冬。该螨在丝网内营群居生活。丝网内螨密度大时,雌成螨即爬出丝膜,另织网为害繁殖。雌成螨羽化后7～22天产卵,一天或隔天产卵1～2粒,平均一生产卵17粒。该螨营两性生殖和孤雌生殖。南京裂爪螨天敌有5种(类),以植绥螨为主,日捕食量4头雌成螨。清理竹叶、竹腔注射50％甲胺磷、40％氧化乐果防治有效。
Schizotetranychus nanjingensis Ma et Yuan is one of the im- portant pests which damage bamboos. It has 6—8 generations in Zhejiang Province, living through winter by the matures and eggs. In the middle and last ten days of next March it will become active again and lay eggs. In the first ten days of April, both of the eggs living through winter and the eggs of the first generation laying in currunt year will hatch one after another, and the larvas live together under their silk nets, but the later generations are mixed. In the last ten days of Oct., the mature makes the silk net thicker to prepare living through the winter. The damaged bamboo culms will become withered and yellow and the leaves of the heavyly damaged one will fall, which gives bad effects to the shooting and the quality of the currunt culm, and even leads the old culm's death. There are 5 species as natural enemies, the dominant one of which is. To inject solution of 50% methamidophos and 40% omethoate into culm hall will control this pest effectively.
出处
《竹子研究汇刊》
北大核心
1991年第2期61-67,共7页
Journal of Bamboo Research
关键词
南京裂爪螨
竹叶
防治
虫害
Schizotetranychus Nanjingensis Bamboo
Biological charecter
Protection
