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在棉铃虫的防治工作中,合理地运用农药混配技术,可提高防治效果、拓宽防治对象、降低防治成本、延缓抗药性的发展。所谓合理混配,就是有目的地选择两种或两种以上农药混配后,有效成分不发生化学变化,应具备的物理性状不被破坏,对人、畜、天敌的毒性不增加,对害虫防治增效或兼治其他病虫,同时防治成本也比较合理。目前,农药混配的方式有两种,一种是用成品农药按一定比例现混现用,另一种是由农药厂家将混配农药各方有效成分按比例配制,生产成复配农药品种,并重新定名成为商品农药。 一、成品农药混用 目前,在棉区已广泛应用于防治棉铃虫,并效果显著的农药混用实例主要有如下几项:
In the prevention and control of cotton bollworm, the rational use of pesticide blending technology can improve the control effect, broaden the prevention and control targets, reduce the cost of prevention and delay the development of drug resistance. The so-called rational mixed, is the choice of two or more than two pesticides after mixing, the active ingredient does not occur chemical changes, the physical properties should not be destroyed, the toxicity to humans, livestock, natural enemies do not increase, the pests Prevention and control of synergies or other pests and diseases, while prevention and control costs are more reasonable. At present, there are two ways to mix pesticides, one is to use the finished pesticides according to a certain percentage of mixed use now, and the other is that the pesticide manufacturers will be mixed with all active ingredients of pesticide in proportion to formulate and produce into compound pesticide varieties , And renamed to become a commodity pesticide. First, the finished product mix of pesticides Currently, cotton has been widely used in the control of cotton bollworm, and significant examples of pesticide mix are the following: