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应用黑青小蜂(金小蜂)Dibrachys cavus(Walker)防治棉仓越冬红铃虫,做到放蜂时期适当,放蜂数量充足,肯定具有良好的效果。成片放蜂,规模越大,得益越多,田间红铃虫的早期为害越轻。然而,要获得大量的小蜂,必须提供大批合用的寄主,寄主问题成为应用中的关键所在。通常所采用的,自棉仓,特别是草舍剥取红铃虫茧以及类似的办法,耗工太大,成本过高,规模受到限制,亟待研究改进。采收棉花的季节,红铃虫在棉仓中集中出现,加以利用应该是理想的。问题的焦点是,如何以最小的代价获取大批结茧的活红铃虫。
Applying the Black Mustela (Jupiter) Dibrachys cavus (Walker) to control the overwintering red bollworm in the cotton silo, it is sure to have a good effect when the time for releasing the bee is adequate and the quantity of bee-eaters is sufficient. Into a piece of bee, the larger the scale, the more benefit, the earlier the red bollworm damage in the field lighter. However, to obtain large numbers of small bees, a large number of cooperative hosts must be provided, and the host problem becomes the key point in the application. Commonly used, from the cotton warehouse, especially the red carpet caterpillar beet stripping and similar measures, too much work, the cost is too high, the scale is limited, urgent research and improvement. Cotton harvest season, pink bollworm concentrated in the cotton warehouse appear to be used to be the ideal. The focus of the question is how to get the bulk of the cocooned live pink bollworm at the lowest cost.