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一、问题的提出防虫磷(优质马拉硫磷)自1981年推广应用以来,由于药效好,残效期长,毒性低而受到好评。除国库外,特别在农村由于它不受仓储条件限制,使用方便,对食用粮与种子处理安全,广大农民十分欢迎。这一情况表明防护剂在国内是需要的,开始应用了。它提供了包括熏蒸剂在内的其他防治措施难以解决的一些虫害问题的新措施。今后势必进一步得到发展。为此,应考虑如何延长防虫磷的使用寿命,推迟抗药性害虫的形成。用好这一药剂,是一个十分重要的现实问题。
First, the issue put forward Pest control phosphorus (high-quality malathion) since its promotion in 1981, due to good efficacy, long residual period, low toxicity and has been well received. Except for the State Treasury, especially in the rural areas, it is widely welcomed by farmers because it is not restricted by storage conditions and is easy to use and safe for food grains and seeds. This situation shows that protective agent in the country is needed, began to apply. It provides new measures for some pest problems that are difficult to solve with other control measures, including fumigants. It is bound to further develop in the future. Therefore, we should consider how to prolong the service life of pest control and delay the formation of drug-resistant pests. Make good use of this agent is a very important practical problem.