树干喷药防天牛效果好我场历年对天牛防治采取“涂、刮、毒、挖”等措施。虽然这些综合措施防治效果较好，但是，有时发现树干有虫时，幼虫已经蛀食了许多树皮，造成较大伤害。为此，笔者１９９３年一改常规，采用在天牛出洞盛期，每隔一周在树干上喷一次敌敌畏、乐果等杀... Trunks spray anti-day cattle good effect My calendar year on the bee prevention and control to take “Tu, scraping, poisoning, digging” and other measures. Although these integrated measures have a good control effect, it is sometimes found that the larvae have eaten a lot of bark and cause great damage when the trunk is infested. To this end, I changed the convention in 1993, the use of days in the celestial hell hole, spray once a week on the trunk of dichlorvos, dimethoate kill ...