【摘要】 南华松叶蜂Diprion nanhuaensis Xiao是云南松的重要害虫之一。除本省外,贵州也有分布。该虫在云南以为害云南松中幼林为主,对树木生长造成严重影响。在云南江川地区一年发生二代,以茧蛹越冬。越冬代成虫5月上旬,第一代成虫8月中旬开始羽化。幼虫进入三龄取食全叶为害加重;第一代7月,第二代(即越冬代)10月是幼虫为害盛期。本文提出了以营林措施为主的综合防治方法。由于成虫飞翔能力弱,喜产卵于两米以下松针叶肉内的习性,因此要求适树适地优质造林,加强幼林抚育,加快成林速度,使不利于成虫活动产卵;利用南华松叶蜂各虫态的发生与节令、物候及农林生产活动等的关系,进行虫情预测,适时采取人工捕杀幼虫,清除害虫茧蛹及必要的化学手段防治幼虫。更多还原

【Abstract】 This paper deals with the biology and management of the pine sawfly Diprion nanhuaensis Xiao, a serious leaf-infesting pest of Yunnan pine (Pinus yunnanensis Franeh). The life history and other major biological characteristics of the pest are presented in the text. Management suggestions are made as follows:(1) I reproving the silvicultural and managerial practices to accelerate the sapling growth of the host can minimize the host’s suitability for insect egg-laying; (2) A good sanitation in the infested forest during winter will keep down the pupal population of the pest; (3) Hand treatment of the aggregated larvae is found feasible. When necessary, a dosage of emulsified D D V P will give a good control of larvae. Under a suitable temperature and humidity condition, the Beauveria bassiana preparation is found effective for suppressing the larva/population; and (4) Some phenological phenomena are found helpful to monitoring the pest abundance and impplementing timely control.更多还原