小木蠹蛾是我市行道树的毁灭性蛀干害虫,据调查中国槐及龙爪槐等行道树被害株率达98%左右。为害期从4月初开始至11月底止,达8个月之久。光肩星天牛危害旱柳、垂柳、馒头柳,在我市被害株率达90%以上,为害期也长达7个多月。红颈天牛,主要危害碧桃、桃树,严重影响桃树产量和质量,在果园中被害株率也达98%以上。为消灭虫害,采用过多种化学药剂如DDT、DDV7216烟雾剂、乐果、氧化乐果、1059、3911、磷胺以及白僵菌、青虫菌、7216菌、苏云金杆菌等进行注射、棉球及熏灌,但都很难奏效。经过饲养和观察小木蠹蛾生活史,发现此幼虫有惧怕氨气的现象,据此做了氨水防治蛀干害虫试验。 Woodhopper moth is a devastating stem borer pests in our city pavement trees, according to the survey of Chinese tree and pagoda tree such as Acacia trees were killed about 98%. Damage from the beginning of early April until the end of November, up to 8 months long. Light Shoulder star beetle endangering willow, weeping willow, bread Liu, in the city killed more than 90% of the strains, the damage period also up to 7 months. Red-necked Beef Cattle, the main harm to the blue-peach, peach trees, seriously affecting the yield and quality of peach trees in the orchard killed more than 98% rate. To eliminate pests, the use of a variety of chemical agents such as DDT, DDV7216 aerosol, dimethoate, omethoate, 1059,3911, phosphate and Beauveria bassiana, coccidian, 7216 bacteria, Bacillus thuringiensis injection, cotton balls and Smoked, but are difficult to work. After feeding and observation of the life history of the codling moth, it was found that the larvae were afraid of the phenomenon of ammonia, thus making the ammonia prevention and control pest-boring test.