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棉铃虫是吐鲁番棉区棉花主要害虫之一，以第二代为害棉花最重。近年来吐鲁番地区采用的二代棉铃虫防治指标为经验指标，即百株累计卵量２０粒，或百株三龄以下幼虫５头，对自然天敌的控害作用和棉花的补偿能力利用不足，导致用药量过大。１９９８年，我们在棉田自然开放系...
Cotton bollworm is one of the main cotton pests in Turpan cotton area, the heaviest damage to the cotton of the second generation. In recent years, Turpan region used second-generation cotton bollworm prevention and control indicators as an indicator of experience, that is, a hundred cumulative number of eggs 20, or one hundred five larvae under the age of three, the control of natural enemies of cotton and the ability to compensate for the lack of use, Cause the dosage is too large. In 1998, we naturally open department in cotton field ...