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近年来,谷物防护剂在世界各地得到了广泛的应用。特别是高效、低毒的拟除虫菊酯类防护剂的开发,为控制储粮害虫,减少谷物收获后的损失起到了积极的作用,具有广阔的发展前景。目前使用的拟除虫菊酯类防护剂,一般都是乳油剂,需要超低量喷雾或用载体法才能均匀地分布在粮堆中,而载体的性质(如吸附性,细度,极性,以及本身的毒性等)对防护效果影响极大。因此,筛选载体的类型和研究合理的配方,是当前一项非常重要的工作。Cotton 和 Frankenfield 早在四十年代就已经使用非结晶硅石和硅酸盐等无机物粉末来
In recent years, grain protectants have been widely used all over the world. In particular, the development of highly effective and low toxicity pyrethroid protective agents has played a positive role in controlling stored grain pests and reducing the loss after harvest of cereals and has broad prospects for development. The currently used pyrethroid preservatives, which are generally emulsifiable concentrates, require very low amounts of spray or carrier method to be evenly distributed in the grain piles while the nature of the carrier (eg, adsorbability, fineness, polarity, and Its own toxicity, etc.) have a great impact on the protective effect. Therefore, screening the type of carrier and researching a reasonable formula is a very important task at present. Cotton and Frankenfield used inorganic powders such as amorphous silicas and silicates as early as the 1940s