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根区施药在多种作物和多种害虫的试验上国内外均有不少报道,但是对棉花红铃虫的防治问题尚有待探讨。棉红铃虫是长江中下游棉区的主要害虫之一,在综合防治中,化学防治仍然是主要手段。多年来防治这一害虫的主要农药一般是滴滴涕等高残毒品种和剧毒农药,对环境污染大,对天敌杀伤大,成本高,成了一个急待解决的问题。
There are many reports both at home and abroad on the application of root zone pesticides in many crops and many pests, but the prevention and control of cotton bollworm needs to be discussed. Cotton bollworm is one of the major pests in cotton area in the middle and lower reaches of the Yangtze River. Chemical control is still the main method in comprehensive prevention and control. For many years, the main pesticides for controlling this pest are generally high-residue varieties such as DDT and highly toxic pesticides. It is a problem that needs urgent solution to the huge environmental pollution, great damage to natural enemies and high costs.