松材线虫病疫木伐桩除害药剂筛选试验

Pesticides Selection Experiment for Extinction Treatment of Diseased Wood Stumps of Bursaphelenchus xylophilus

选用80%敌敌畏乳油、30%氯胺磷乳油、20%吡虫啉乳油3种化学杀虫剂分别与水、柴油按1∶3、1∶5配比混合,进行松材线虫病疫木伐桩除害对比试验,并测算各处理的药剂成本。结果表明:12种处理松墨天牛(Monochamus alternatusHope)的死亡率都不高,除治效果都未超过3%,而除治成本很高,未达到除害处理的目的。表明松材线虫病疫木伐桩应用化学杀虫剂除害处理效果不理想。

80% of Dichlorvos Ec, 30% of Chloramine Phosphorus Ec, 20% of Imidacloprid Ec were diluted with water and diesel oil according to 1 ： 3, and 1 ： 5 respectively to prepare 12 treatments to compare the effects, and the chemical costs were calculated. The results showed that low Monochamus alternatus Hope mortalities were obtained with all the 12 treatments, the control effect was no more than 3 % , and the costs were rather high, it could not reach the extinction purpose. The effect of diseased stumps dealing with chemical pesticides was not ideal.