棉铃虫是棉花蕾铃期的主要害虫之一,是棉花增产的大敌。为了减轻其危害,各地采取综合防治的方法,取得显著效果。在综合防治方法中,一般仍以化学防治为主。但是,化学农药的大量使用,又出现了农药残毒、环境污染等问题。因此,目前国内外正在寻找新的防治方法,以弥补化学防治的不足方面。基于同一目的,我们考虑就生物防 Cotton bollworm is one of the main pests in cotton budding period and is the enemy of cotton yield increase. In order to reduce its harm, various localities have taken a comprehensive approach to prevention and control and achieved remarkable results. In the comprehensive prevention and treatment methods, the general chemical control is still the main. However, due to the heavy use of chemical pesticides, pesticide residues and environmental pollution have emerged. Therefore, at present, new prevention and cure methods are being sought at home and abroad to make up for the deficiency of chemical control. For the same purpose, we consider biological defense