施硅对水稻生长发育及产量结构的影响

Effects of Basal Dressing Silicon Fertilizer on Rice Growth Development and its Production Structure

研究了硅对水稻（Oryza sativa L.）生长发育及产量结构的影响,并提出了适宜的施硅量。结果表明,水稻施用硅肥能增加比叶重和叶面积指数,能通过增加穗粒数、实粒数和千粒重提高水稻产量,水稻施硅增产幅度为3.45%-15.69%。江汉平原地区水稻硅肥（Si O2）用量建议15-30 kg/hm^2。

Studed the effect of silicon fertilizer on the growth and yield components of rice（Oryza sativa L.）,and put forward a suitable amount of silicon. The results showed that using silicon fertilizer could increase ratio of leaf area to leaf weight and index of leaf area after rice,and also could raise rice yields by increasing the grain number,kernel number,and thousand kernel weight,yield to 3.45%-15.69%. Satisfactory amount of Silicon fertilizer（Si O2） in rice in jianghan plain was 15-30 kg/hm^2.