水浸处理原木杀虫机理的研究

Studies on the Principle of Killing Pests by Water-soaking Treatment

通过对水浸处理原木杀虫效果、所产生的有毒气体和水中溶解氧含量变化的测定试验 ,得出了水浸处理原木杀虫机理。即在一定气温条件下 ,水浸处理的原木中有机质不断氧化 ,耗除了水中溶解氧及虫孔中的氧气 ,使害虫窒息死亡 ;同时由于氧化产生了大量的有毒气体 (如H2 S、SO2 、CO等 )渗入虫孔及组织中 ,从而加速了有害生物死亡。

Based on the test of effectiveness of killing pests in logs and the gas components produced by this treatment,as well as the variation of DO in water where the logs were stored by using water soaking treatment,we conclude that the principle of killing the pests is as follows:the organic oxidation under a certain temperature consumes DO and oxygen in the insect holes that can cause the death of the pests by suffocation,and also the oxidation can produce a large quantity of toxic gases(H 2S,SO 2,CO, et al .)which can enter the insect holes and the tissues that contribute to the death of the pests.The results indicate that the water soaking treatment can reach the aim of quarantine for killing the pests.