水稻有机栽培谷壳施入方法的研究

本试验于2012年以日本水稻品种越光-2(Koshihikari-2)为试验材料进行田间试验，旨在探索以水稻谷壳作硅肥的最佳施入方法、用量以及对水稻生长发育的影响。试验结果证明，适量基施谷壳能抑制水稻前期过旺生长、保持中后期生长稳健、缩短基部节间长度、改善株型、增强抗病抗倒能力、提高分蘖成穗率、增加穗粒数和千粒重，从而提高单产；在插秧前将谷壳做基肥全层施入1kg/m2为最佳施入方法和用量，每666.7 m2产量为414.3kg，比对照CK的374.5kg增产幅度达10.4%，差异达极显著水平。

Study on The Applying Method of Rice Hull in Rice Organic Cultivation

In order to find the best applying method, quantity and the effect on the rice growth, the experiment of rice hull as silicon fertilizer was done in the field with the Japanese rice variety ＇Koshihikari-2＇. Four experimental treatments were assigned to this test： no applying rice hull（CK）; applying rice hull as basal fertilizer 1 kg/m2 （T1）; applying rice hull as basal fertilizer 2 kg/m2 （T2）; applying rice hull as basal fertilizer 1 kg/m2 and then applying rice hull 1 kg/m2 after seedlings turning green again （T3）. Randomized block design with three replications was used. The result was the following： the yield of T1 was the highest increasing10.6% comparing with the control, there was very significant difference; next was T3 increasing 4.5% comparing with the control, there was significant difference; the yield of T2 was the lowest reducing 0.4% comparing with the control, there was no significant difference. The result showed that applying rice hull adequately as basal fertilizer could 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-resistance and diseaseresistance, raise its rate of tiller into spike and effect ear grain and grain weight. The way of applying 1kg/m2 of rice hull as basal fertilizer before transplanting was the best choice.