棉蚜,俗叫“伏虱”、“伏蛆”、“伏虫”等,是威胁棉苗生育的“吸血鬼”,轻者可使棉苗生育停滞7～10天,重者可使棉苗子叶、真叶脱落而枯死。因此,掌握“三看”抓紧抓好治蚜,是确保棉苗早展真叶争早发的重要措施之一。“三看”的具体要求是: 一看天气。棉苗出土后10～15天无雨,棉蚜必将猖獗。经多年观察,五、六月间月 Cotton aphid, commonly known as “lice”, “maggots”, “Volt” and so on, is threatening the growth of cotton seedlings “vampire”, light can make cotton seedling stagnation 7 to 10 days, Leaves, leaves really fall dead. Therefore, grasping the “three look” pay close attention to aphids governance is to ensure that cotton seedlings early to show their true cause early one of the important measures. The specific requirements of “Three Looks” are: Look at the weather. Cotton seedlings unearthed after 10 to 15 days without rain, cotton aphid will rampant. After many years of observation, in May and June months