稻壳是碾米工业的副产品,一般占稻谷的22％—28％,干燥的稻壳含水分9％,干物质91％,其中纤维素占38％、木质素占22％、戊聚糖占18％、有机物占2％、灰分占20％,而灰分中硅约占95％。仅就其灰分中硅的利用而言,可制成水玻璃、硅胶、二氧化硅、四氯化硅、高纯硅、硅酸肥料等,这些在工农业生产上都有很大的用途。一、硅酸肥料:它是一种可溶性硅酸盐,硅又是作物生长发育必需的营养元素,它可 Rice husks are a by-product of the rice industry, accounting for 22% -28% of rice, dry rice husks containing 9% moisture and 91% dry matter, of which cellulose accounts for 38% and lignin accounts for 22% 18%, organic matter 2%, ash 20%, and ash in silicon about 95%. Only in terms of its use of ash in the ash, can be made of water glass, silica gel, silicon dioxide, silicon tetrachloride, high purity silicon, silicate fertilizer, which have great uses in industrial and agricultural production. First, silicate fertilizer: it is a soluble silicate, silicon is a crop growth and development of essential nutrients, it can