3种非寄主植物对云南纵坑切梢小蠹嗅觉行为的影响

Effects of 3 Non-host Plants on Olfactory Behavior of Tomicus piniperda

云南松与藏柏、樟树、滇青冈等3种非寄主植物枝梢按块状、带状、行间、株间4种混合方式排列,分别观察10、40、120 min时,云南松枝梢上云南纵坑切梢小蠹头数和云南松平均每梢着虫数。结果表明,混合排列后对云南纵坑切梢小蠹嗅觉行为均有显著影响,3种非寄主植物之间无显著差异。株间混合时,云南松梢的着虫数最少,平均每梢着虫数最低;其次分别为行间混合、带状混合、块状混合。云南松梢着虫数、平均每梢着虫数随时间增加而增加,株间混合中着虫数增长速度较慢。说明株间混合对云南纵坑切梢小蠹嗅觉行为的影响最大,行间混合次之,带状混合、块状混合较小。

The shoots of Pinus yunnanensis and Castanea mollissima,Keteleeria fortunei,Pinus armandii were mixed by group,strips,rows and single tress.The numbers and the average of Tomicus piniperda in the shoots of P.yunnanensis were observed 10 minutes,40 minutes and 60 minutes later.The result showed that effects of T.piniperda on olfactory behavior were significant;the difference of 3 non-hosts was not significant after mixing.The numbers of the pest in the shoots of P.yunnanensis were the least,the average was the lowest after they were mixed by single tress,next to row,strips,group mixed model.The numbers and the average of the pest in the shoots increased as the time,the increment speed of the pest numbers was slower after they were mixed by single tress.It showed that effects on olfactory behavior of T.piniperda mixed by single tress were largest,row mixed model was larger,strips and group mixture was less.