硅(Si),科学家目前还没有把它列为植物生长发育必需的营养元素,但大量研究结果表明,硅对水稻、麦类、甘蔗等多种作物的正常生长发育是不可缺少的。尤其是水稻,属典型的需硅作物,每生产500千克稻谷,需要吸收87~100千克硅。一般植物的硅含量都不超过1%,但水稻可达干重的6%~20%,健壮生长的 Silicon (Si), scientists have not yet listed it as a nutrient essential for plant growth and development, but a large number of studies have shown that silicon is indispensable for the normal growth and development of a variety of crops such as rice, wheat, sugar cane and so on. In particular, rice, which is a typical silicon-requiring crop, requires 87 to 100 kg of silicon for every 500 kg of paddy produced. General plant silicon content of not more than 1%, but the rice up to 6% to 20% of dry weight, robust growth