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2000年以来,建湖县抗虫棉广泛推广普及,以棉铃虫为主的鳞翅目害虫得到有效控制,棉田内有害生物种群发生了根本性的变化。棉盲蝽近年呈逐年加重趋势,成为为害棉花的主要害虫。尤其是2003年以来,每年棉田棉盲蝽为害株率一般达30%～40%,严重的达70%,棉花蕾铃脱落率达20%左右,严重的达30%,造成棉花减产20%～25%。因此,准确了解棉盲蝽重发成因,有效控制其猖獗为害,是夺取棉花高产的关键所在。
Since 2000, insect-resistant cotton in Jianhu County has been widely popularized. Lepidopteran pests dominated by cotton bollworm have been effectively controlled and the pest population in the cotton field has undergone fundamental changes. Lygus has been increasing year by year in the trend of becoming a major pest damage to cotton. Especially since 2003, the damage rate of cotton plant litchi in cotton fields is generally 30% ~ 40% and the severity is up to 70%. The loss rate of cotton buds reaches about 20% and the cotton yield reaches 30% 25%. Therefore, a precise understanding of the cause of the recurrence of cotton bug, effective control of its rampant damage, is to seize the key to high-yield cotton.