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棉铃虫防治技术①清理田园。拔棉柴及麦收后灭茬能破坏蛹室,提高虫蛹的死亡率。棉铃虫蛹一般分布在距植株2～30厘米范围内,入土深度在2.5～9.0厘米的范围内,拔棉柴后能使部分蛹暴露于地表而被冻死或被
Cotton bollworm prevention and control technology ① clean up pastoral. Pulling cottonwood and wheat after harvest stubble can damage the pupal room and increase the mortality rate of pupae. The bollworm pupae generally distributed in the range of 2 to 30 cm away from the plant, the soil depth of 2.5 to 9.0 cm in the range, pull cottonwood can make part of the pupae exposed to the surface to be frozen to death or by