After being inoculated of Rhizoctonia solani, the rice plants supplied with Si had significantly lower disease index with relative control effect of 25.8% compared to those deprived with Si.

• 施硅肥能显著降低水稻植株的纹枯病病情指数，提高其对纹枯病的抗病能力，相对防治效果达25.；8%25。