Abstract: In order to find the best applying method, quantity and the effect on the rice growth, the experient of rice hull as silicon fertilizer was done in the field with the Japanese rice variety Koshihikari-2 on the base of the researches of 2011.The result shows that applying rice hull adequately as basal fertilizer can control the growing of earlier period and make the growing of later period steady, shorten the length between the basal joins, improve the plant-type, increase the power of lodging-risistance and disease-risistance and raise its rate of tiller into spike and effect ear grain. By the way of applying 1kg/m2 of rice hull as basal fertilizer before transplanting, the yield is up to 414.3kg/666.7m2 , increased 10.4% comparing with the 374.5kg /666.7m2 of the control . Their grain yield increasing effect were signifficant.