景德镇市昌江区丽阳乡洪家小学徐斯文来信:我校附近几个较大村庄主要经济作物甘蔗,长至七叶一心时普遍出现钻心虫,使茂盛的壮苗枯死。在甘蔗下窖封闭前,又出现肉虫蛀蔗,每根甘蔗都有七、八个蛀眼,来年开窖,凡被虫所蛀的甘蔗全部烂掉,现在,广大蔗农迫切需要甘蔗虫害防治方面的知识。 Xujiawen, Hongjia Primary School, Liyang Township, Changjiang District, Jingdezhen City, China Letter: Several major villages near our school, the main cash crops, are sugarcane. In the cellar cellar closed before the emergence of carnivorous caterpillars, each sugarcane has seven or eight eyed eyes, the next year opened the pit, where all the worm-ridden cane all rotted, and now, the majority of cane farmers in urgent need of prevention and control of sugarcane pests Knowledge.