一、前言硅是在动植物和人类生命活动中起重要作用的元素,是水稻的必需元素之一。水稻施硅不仅提高产量,而且增加茎秆抗折性,对植株的外部形态及内部微型结构都有明显的影响。为摸清我省几种主要土壤类型的水稻施硅肥效果,1985～1986年我们进行了盆栽试验和不同类型土壤的田间试验。研究结果证明,硅肥与氮、磷肥配合施用,增产效果好,尤其在白浆土和草甸土上增产效果更为明显。 I. Introduction Silicon is an element that plays an important role in animal, plant and human life activities and is one of the essential elements of rice. Rice silicon application not only increased yield, but also increased the stem bending resistance, the external morphology of plants and the internal microstructure have a significant impact. To find out the effects of some silicon fertilizers on rice in our province, from 1985 to 1986, we conducted pot experiments and field experiments on different types of soils. The results show that the combination of silicon fertilizer with nitrogen and phosphate fertilizer has a good effect on yield increase, especially in white soil and meadow soil.