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危害现状滴灌棉田棉铃虫的产卵和危害分布广,无固定场所。生长嫩绿的棉花比玉米诱集带更有吸引力。尤其在一代、二代棉铃虫棉田将占80%以上,三代、四代逐渐增多。滴灌棉田高密度栽培模式。棉田密度大,长势匀,棉铃虫虫源及生长环境好,机耕作业强度降低,有利于棉铃虫幼虫化蛹和羽化。
Endanger the status of drip irrigation cotton bollworm spawning and damage distribution, no fixed place. Growing green cotton is more attractive than corn traps. Especially in the generation, the second generation cotton bollworm cotton fields will account for more than 80%, three generations, four generations gradually increased. Drip irrigation cotton field high density cultivation mode. The density of cotton field is high, the growth is even, the insect source and growth environment of cotton bollworm are good, and the intensity of tilling operation is reduced, which is good for larvalization and emergence of cotton bollworm.