应用回归设计方法进行田间试验.结果表明,在有效硅113μgg~(-1)的砂壤质石灰性水稻土上适量施用硅肥(水玻璃)有增产作用,氮、硅肥配合施用具有正交互效应.对稻株抗逆性的影响,氮、硅肥具互补性.硅肥可增加秸秆、籽粒中磷含量及秸秆中含硅量,但对秸秆、籽粒中氮含量及秸秆中钾含量无明显影响.硅、氮肥均使籽粒中钾含量减少. The field experiments were carried out by applying regression design method.The results showed that applying proper amount of silicon fertilizer (water glass) on sandy loam calcareous paddy soil with effective silicon 113μgg -1 had the effect of increasing yield, and the combination of nitrogen and silicon fertilizers had orthogonal interaction Effect on stress resistance of rice plants, nitrogen and silicon fertilizers are complementary.Silicon fertilizer can increase the phosphorus content in straw, grain and silicon content in straw, but the nitrogen content in straw, grain and potassium content in straw Obvious effect.Si and N fertilizer all reduced the potassium content in the grain.