硅是植物有益元素。在缺硅土壤上水稻等禾本科作物施用硅肥后能显著增产，已被国内外许多试验所证实。日本等国家在60年代就大力推广应用这一技术。近年来我国硅肥的生产和应用发展较快，主要是利用含大量硅、钙等元素的高温炉渣球磨制取，常称之为硅钙肥［’1。由于目前测定该 Silicon is a plant beneficial element. In silicon-deficient soils, application of silicon fertilizers, such as rice and other gramineous crops, can significantly increase yield, has been confirmed by many experiments at home and abroad. Japan and other countries in the 60’s to promote the use of this technology. In recent years, China’s silicon fertilizer production and application of rapid development, mainly using a large number of silicon, calcium and other elements of high-temperature slag milling system, often called calcium silicate [1]. As the current determination of the