辽阳地区松纵坑切梢小蠹防治试验

Integrated control technology on Tomicus piniperda in Liaoyang region

本文对松纵坑切梢小蠹防治技术进行了较为系统的防治试验,结果表明:采取营林措施预防,平均梢被害减退率可达到73.5%;林间设置饵木诱杀,平均越冬虫口减退率可达到56.7%;利用聚集信息素诱捕器诱捕,平均梢被害减退率可达到82.2%;根部喷施8%氯氰菊酯微胶囊水剂200倍或1.5%对硫磷粉剂,杀虫效果均在95.0%以上;在平均气温20℃条件下,利用56%磷化铝颗粒剂12 g.m-3熏蒸饵木,第5天的杀虫效果达到100.0%。

According to the assessment criteria of State Forestry Administration of China about the risk（importance） of harmful organisms,Tomicus piniperda is an dangerous pest of grade Ⅲ.This pest does not only seriously threaten the growth of pines（Pinus spp.）,but also damage to the forest environment seriously.Tomicus piniperda had become one of the important pests in Liaoning province,and an effective control on this pest is required urgently now.A study on prevention and control of the pest was conducted.As a result,the average occurrence rate of pest decreased 73.5% by protecting natural enemies,and the amount of pests living through winter decreased 56.7%,which measured by bait trapping method.The average occurrence rate of pest decreased 82.2% by aggregation pheromone trapping method.The insecticidal effect was more than 95% when 200 times cyper-Methrin or 1.5% of parathion powder was sprayed on roots.On the fifth day after application of bait wood suffocated by 56% aluminium phosphide at 12g/m3,100% pests were killed.