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在不同耕作类型与不同卵量密度棉田,调查棉铃虫卵与幼虫在棉株上的分布情况,明确了在嫩头、叶片、苞叶等不同器官部位的消长动态及垂直分布规律,并据此对棉田棉铃虫卵与幼虫种群抽样调查方法及施药技术进行了讨论。
The distribution of cotton bollworm eggs and larvae on cotton plants was investigated in cotton fields with different tillage types and different egg densities, and the dynamics and vertical distribution of growth and decay in different organs of tender head, leaves and bract were clarified The methods of sampling survey and application of cotton bollworm eggs and larvae in cotton field were discussed.