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优质稻具有自身的发育特点，其干物质积累与普通水稻品种是不同的。为探讨优质稻干物质积累与产量和米质的关系，于 １９９６～１９９８ 年在长沙和临澧基点开展了一系列试验。结果表明，在相同的栽培条件下，优质稻的干物质积累速率及经济系数均不同程度地低于普通高产品种，而且米质愈优，差异愈大，从而导致优质稻品种最终的产量较低。栽培因素对优质稻的干物质积累有着重要的影响。栽培上主要应围绕提高前期干物质积累量，适度控制中期增长速度，促进后期干物质积累速率，提高全期干物质积累总量而采取相应的调控措施。
High-quality rice has its own developmental characteristics, its dry matter accumulation and ordinary rice varieties are different. In order to explore the relationship between dry matter accumulation of high quality rice and grain yield and quality, a series of experiments were conducted in Changsha and Linqu starting points from 1996 to 1998. The results showed that under the same cultivation conditions, the dry matter accumulation rate and economic coefficient of high-quality rice were lower than those of common high-yielding cultivars, and the better the quality of rice, the greater the difference, resulting in the lower yield of high-quality rice . Cultivation factors have an important impact on the dry matter accumulation of high quality rice. Cultivation should mainly focus on increasing the amount of dry matter accumulated in the previous period, moderately controlling the medium-term growth rate, promoting the rate of dry matter accumulation in the late period, and increasing the total dry matter accumulation in the entire period, and adopting corresponding regulatory measures.