我场常见的白蚁有6—7种,以黑翅土白蚁和黄翅大白蚁对林木危害最大,对杉木的危害尤为严重。我们认真学习了外地挖白蚁的经验,两年来解剖了六十八个以巢,初步了解白蚁的生活习性和危害规律,能比较正确地判断蚁巢位置。在此基础上进行了压烟法防治白蚁的试验,其方法和效果如下:压烟方法在蚁巢附近开探测沟,一般在入土2—3尺深左右即可发现白蚁主蚁道。确定蚁道走向后,在通向主巢的蚁道下方挖一个烟包洞,以能放下一公斤烟剂即可,燃后将烟剂放入洞内点燃。当见发浓的烟时,用铁制挡烟板将洞口盖住,挡烟板应比洞口略大,并用泥土密封挡烟板四周,不让烟从洞口外溢,而后将打气筒与挡板上气眼接好,打气压烟6—8分钟,使烟 There are 6-7 kinds of common termites in our field. The black termites termites and yellow-winged termites are most harmful to the trees and the damage to the Chinese fir is especially serious. We conscientiously learned the experience of digging termites in the field. In the past two years, we dissected 68 nests and learned about the termites’ habits and laws of harm. We can judge the nest position more correctly. On this basis, the method of preventing and treating termites by the method of suppressing the smoke was carried out. The method and the effect are as follows: The method of suppressing the pressure of smoke opens a detection ditch near the ant nests, and the termites of the termites are usually found at a depth of about 2-3 feet. Determine the direction of the ant, after digging a cigarette hole under the ant tunnel leading to the main nest, so as to be able to put down one kilogram of tobacco smoke. After burning, put the tobacco into the hole and ignite it. When you see the thick smoke, the iron block to cover the hole, block tobacco board should be slightly larger than the hole, and sealed with soil around the smoke block, do not let smoke from the hole spill, and then pump and baffle On the eye of a good eye, cheer pressure 6-8 minutes to make smoke