对水稻成熟期间籽粒物理特性进行追踪测定的结果表明,成熟期间水稻籽粒物理特性变化显著,引起变化的原因是水分的递减和干物质的积累. The results of tracing and measuring the grain physical characteristics of rice during maturity showed that the physical characteristics of rice grains changed significantly during maturity, and the reasons for the changes were the decrease of water content and the accumulation of dry matter.