当前,基层粮食收储企业实施PH3常规熏蒸杀虫时,在投药方式上一般都采用粮面埋藏法、探管法等。经实践反复证明,此法存在三大弊端:一是用药量大,费用高,且熏蒸杀虫控制周期短、易反复,尤其是对虫卵灭杀不彻底,不仅增加了熏蒸费用的开支,而且也增大了储粮害虫的防治难度。二是渗 At present, the basic grain storage and storage companies to implement PH3 conventional fumigation insecticide, the mode of administration generally used food surface buried method, probe method. Practice repeatedly proved that there are three major drawbacks of this method: First, the large amount of medication, high cost, and fumigation insecticidal control cycle is short, easy to repeat, especially for the killing of eggs is not complete, not only increased the cost of fumigation expenses, But also increase the difficulty of grain pest control. Second, seepage