各类作物病虫害的习性和特点,虽然是多种多样,但是它们却有着共同的生活规律,就是都需要潜藏冬眠。由于越冬时期是各种病虫害在其一生中的最薄弱环节,只要我们及时主动,就可以给病虫以致命的打击,把它们大量地消灭在为害之前。我省棉区早在一九五三年就创造了除草防蚜示范,一九五七年后又对玉米螟 Although the habits and characteristics of crop diseases and pests of all kinds are diverse, they all share the same laws of life and all require hibernation. Since the overwintering period is the weakest link in life for all kinds of pests and diseases, if we take the initiative in time, we can make a fatal blow to pests and diseases and destroy them in large quantities before they become harmful. As early as 1953, the cotton area of ​​our province has created a demonstration of aphids for weeding prevention. After 1957,