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中国农学通报 ›› 2012, Vol. 28 ›› Issue (22): 179-183.doi: 10.11924/j.issn.1000-6850.2011-3713

• 林学 园艺 园林 • 上一篇    下一篇

香梨园主要天敌对山楂叶螨的捕食作用

蒋世铮 任德新 张文忠 赛买提江   

  • 收稿日期:2011-12-09 修回日期:2012-01-10 出版日期:2012-08-05 发布日期:2012-08-05
  • 基金资助:

    巴州科技局重点攻关项目

Predation on Tetranychus viennensis Zacher. by Natural Enemies in Korla Pear Orchard

  • Received:2011-12-09 Revised:2012-01-10 Online:2012-08-05 Published:2012-08-05

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摘要：

为了研究香梨园主要天敌对山楂叶螨的控制作用。通过系统调查和室内观察，采用平均历期法研究了香梨园天敌对山楂叶螨的每日捕食量，并对其捕食功能反应和干扰反应进行分析。结果表明：山楂叶螨与主要天敌自然种群数量极显著相关，其密度与被捕食百分率之间符合二次抛物线关系，在每叶平均140头山楂叶螨左右，主要天敌日捕食百分率最高，其中塔六点蓟马的功能效应占优势。在山楂叶螨种群的增长期，主要天敌对山楂叶螨密度的功能反应属于Ⅱ型功能反应，主要天敌在捕食山楂叶螨自然种群的过程中种内干扰作用在增大。塔六点蓟马对山楂叶螨的危害起着重要的调控作用。

关键词: 叶绿素荧光, 叶绿素荧光

Abstract:

In order to study control effects of natural enemies in Korla Pear orchard on the Tetranychus viennensis Zacher. by systematically investigation and indoor observation, and the predation functional response and interference response were analyzed. The results showed that the population density of the T. viennensis and the predation rate of the key natural enemies fit a second-degree parabola, and the daily predation rate reached the peak when there were 140 spider mites per leaf, in which the Scolothrips takahashii Prisener showed the dominant role. Key natural enemies showed a II type functional response to the population density of the T. viennensis during the increasing phase of the population. The inner interference between the key natural enemies was increased during the predation. S. takahashii played an important regulatory role in the harm of the T. viennensis.