我国不少化工厂每年都有大量硅碴废料排出,既占地,又污染环境。如我省开封化肥厂每年要排出硅碴三百多吨。如何利用这些废碴,一直是人们研究的课题。近年来,通过许多试验证明,硅碴不但含有农作物必需的养分,而且具有增强土壤保水保肥的能力,是一种很好的沙土改良剂。据我所分析,硅碴含有机质1.96%,全氮0.23%,全磷0.33%。如2斤沙土中加进50克硅碴后,测定沙土含水率,其一天时间为28.1%,十天达20.5%,比不加硅碴的沙土分别增加4.0%和3.7%;2斤沙土里加200克 Many chemical plants in our country discharge a large amount of waste silicon scraps every year, occupying land and polluting the environment. Such as our province Kaifeng fertilizer plant to discharge more than 300 tons of silicon ballast each year. How to use these waste ballast has always been the subject of research. In recent years, many experiments have proved that silicon ballast not only contains necessary nutrients for crops, but also has the ability to enhance soil water retention and fertilization, and is a good soil conditioner. According to my analysis, silicon ballast contains 1.96% organic matter, 0.23% total nitrogen and 0.33% total phosphorus. For example, if 2 g of sand is added with 50 g of silicon ballast, the moisture content of sand will be measured at 28.1% of the day and 20.5% at 10 days, increasing by 4.0% and 3.7% respectively compared with the unbleached sandy soil; 200 g