在宁夏平原以及周边地区 ,无论男女老幼 ,都知道天牛是什么 ?以及带给他们梦魇般的回忆。从 80年代最初发现天牛开始 ,一场噩梦就笼罩和弥漫在整个三北林区。天牛的繁衍速度非常快 ,加上在宁夏平原种的绝大部分是杨树 ,天牛天生喜欢吃树的树心———场面从此难以收拾。由于天牛 In the Ningxia Plain and the surrounding areas, both men, women and children know what Tianjian is and the nightmares they bring to them. Beginning in the 80’s when the Beetle was discovered, a nightmare shrouded and pervaded the entire Sanbei area. The multiplication rate of beetles is very fast, with most of the species planted in the Ningxia plain are poplars, the natural beetles like to eat the heart of a tree --- the scene is difficult to clean up. Because of the day cow