二斑叶螨危害对三七叶绿素含量变化的影响

Changes of Chlorophyll Content in Panax Notogineseng Infested with Tertanychus Urticae Koch

以三七为寄主,通过接种密度每张叶片0、5、20、35头4个水平,对二斑叶螨危害与寄主植物叶绿素含量变化的关系进行研究。结果表明:不同年限的三七都会受二斑叶螨密度的影响,二斑叶螨密度低时叶绿素含量变化不大,随着密度的增加,总叶绿素的含量在不断降低,且影响显著,二斑叶螨的密度越大,高峰期出现越早。

The paper studies the relations between Tertanychus Urticae Koch infested and chlorophyll content changes of host plant Panax Notogineseng. Panax Notogineseng of different ages, 35 heads and four levels, are inoculated on the surface of each leaf with density being 0, 5, and 20. The results show that different years of Panax Notogineseng will be affected by the density of two-spotted spider mite. When the density of two-spotted spider mite is low, chlorophyll content changes little, but with the increase in density total chlorophyll content will decline obviously. The greater two-spotted spider mite density, is the sooner the peak period occurs.