近年来,棉铃虫为害日趋严重,已成为影响棉花生产的重要因素。为“经济、有效”地控制其为害,使产量损失降低到最低限度,应采取如下综防措施。 一、整地灭蛹 留种棉花的春白地要尽快整地,早浇水造墒,结合保墒,反复耙盖,可消灭部分棉铃虫蛹,减少虫源基数。 二、种植玉米诱集带 在棉花播种的同时,选用早熟玉米品种,在棉田的垄沟、地边或宽背上,每亩点种50—100穴。其作用一是利用棉铃虫在玉米上产卵的习性,分散在棉花上的落卵量;二是玉米为天敌提供繁殖场所,棉田用药后,天敌种群能迅速恢复,有利 In recent years, the harm of cotton bollworm has become increasingly serious, which has become an important factor affecting cotton production. To control its damage “economically and effectively” to minimize the loss of production, the following comprehensive measures should be taken. First, cut off the soil to get rid of pupae Spring cotton and white to soil preparation as soon as possible, watering and planting moisture early, combined with preserving soil, repeated rake cover, can eliminate part of the bollworm pupae, reducing insect base. Second, the planting of corn traps Cotton sowing at the same time, the choice of early maturing corn varieties in the cotton furrows, ground or wide back, 50-100 points per acre point species. The first is the use of cotton bollworm habit of spawning on corn, scattered in the cotton on the amount of eggs; the second is to provide natural enemies of corn breeding sites, cotton fields, the natural enemy population can quickly recover, favorable