密度和移栽期的不同处理对水稻株高、叶龄、叶色的影响不大，其差异不明显，但稀植（３０×２６ｃｍ）与较密植（３０×１３ｃｍ）相比有效分蘖终止期向后延迟，最高分蘖期相近，有效分蘖率提高，在有效穗中二次分蘖穗所占的比重增多；茎基部仲长节间缩短变粗，秆壁增厚．折损重大，抗倒伏能力增强，二次枝梗数明显增多，从而引起每穗粒数增多。方差分析结果表明：不同密度间产量差异不显著，但不同移栽期之间产量有显著差异；多重比较结果表明，稀植的情况下５月２８日移栽的比５月２０日、２４日移栽的明显减产．其差异达极显著水平。要达到低耗增效的目的，在采用稀植栽培技术体系的同时，应适时早插为宜。 The effect of density and transplanting period had little effect on the plant height, leaf age and leaf color of rice, but the difference was not obvious. However, the effective tillering termination period of thin planting (30 × 26cm) and dense planting (30 × 13cm) Backward delay, the highest tillering stage similar effective tillering rate increased in the effective panicles secondary tiller spike occupying the proportion of the increase; Significant damage, anti-lodging capacity increased significantly increased the number of secondary branches, resulting in increased grains per spike. Analysis of variance showed that there was no significant difference in yield among different densities, but there were significant differences in yield between different transplanting stages. Multiple comparisons showed that in the case of sparse planting, transplanting rate on May 28 was lower than on May 20 and 24 Transplanting significantly reduced production. The difference reached a very significant level. To achieve the purpose of low consumption and efficiency, the use of rare planting cultivation techniques at the same time, it should be suitable for early insertion.