水稻是典型的硅酸盐作物,它吸收大量的硅(SiO_2),茎叶中含量可达到千重的10％—15％,谷壳中含量可高达25％左右。在营养生长中硅主要影响水稻的穗数,在生殖生长中则影响每穗粒数和实粒百分数。因此砖对水稻生长发行及其产量形成关系密切,故称硅是水稻的必须营养元素。合理施用硅肥是实现水稻高产的重要措施。 Rice is a typical silicate crop that absorbs large amounts of silicon (SiO 2), stems and leaves can reach 10% -15% of the thousandths of weight, and rice hull content of up to 25%. In vegetative growth, silicon mainly affects the spike number of rice, while in reproductive growth it affects the number of grains per spike and the percentage of seed grains. Therefore, the production and distribution of rice on rice growth and its formation is closely related, so that silicon is an essential nutrient elements of rice. Rational application of silicon fertilizer is an important measure to achieve high yield of rice.