发生情况粘虫通称蟥虫,它在四川的发生区域,主要是沿岷江的大山区域。北自陕甘边境的广元、平武、松潘起,南至金沙江边的雷波止,纵长2,000里的山地,历年均受着不同程度的为害,1950年全区大发生,1953年又全面猖獗,酿成灾害。主要为害玉米,其次为害水稻、高粱、粟、燕麦和小麦等。据观察结果:第一代 The occurrence of armyworms known as pinworm, which occurred in the area of ​​Sichuan, mainly along the Minjiang River in the mountains. From Guangyuan, Pingwu and Songpan in the north of Gansu-Gansu-Gansu-Gansu Border Region to Leibo in the south to the Jinsha River in the north, mountains of 2,000 years in length are subject to varying degrees of damage over the years. In 1950, the entire region occurred. In 1953, Full rampant, causing disaster. The main damage to corn, followed by damage to rice, sorghum, millet, oats and wheat. According to the observation: the first generation