为分析不同积温条件下水稻品种干物质生产特性的差异，选取32个代表不同积温带的黑龙江省主栽水稻品种，对不同生育时期水稻品种干物质生产、分配及运转等方面指标进行测定，以明确黑龙江省不同积温带水稻的干物质积累形成规律，为不同热量条件下提升水稻产量和品质提供理论依据和技术支持。研究结果表明，黑龙江省各积温带间水稻品种干物质生产总量在生育前期均表现为第二积温带＞第三积温带＞第一积温带＞第四积温带；而在生育后期则表现为第三积温带＞第一积温带＞第二积温带＞第四积温带。各积温带间水稻品种干物质生产在生育前期侧重各不相同，但进入生育后期各积温带间水稻品种穗部分干物质分配率依次为第三积温带＞第一积温带＞第二积温带＞第四积温带，第一、第三积温带之间差异不显著，分别为59.33%和59.88%，但极显著高于其他两个积温带。黑龙江省水稻品种的物质表观输出率远远大于表观转化率，因此，为提高水稻品种产量的研究工作应主要放在调控生育后期干物质的分配与转运方面。

In order to evaluate accurately the condition of dry matter production characteristics of rice varieties in different accumulated temperature zones in Heilongjiang Province, 32 representative rice varieties were selected and studied. The results showed that total stem material production in the early stage were: the 2nd accumulated temperature zone > the 3rd accumulated temperature zone > the 1st accumulated temperature zone > the 4th accumulated temperature zone; and in the late stage were: the 3rd accumulated temperature zone > the 1st accumulated temperature zone > the 2nd accumulated temperature zone > the 4th accumulated temperature zone. The dry matter production of the rice varieties in each plot was different in early stage, but entered the late stage the spike dry matter distribution rate were: the 3rd accumulated temperature zone （59.88%）> the 1st accumulated temperature zone （59.33%）> the 2nd accumulated temperature zone > the 4th accumulated temperature zone, there were no difference between these 1st and 3rd temperate zones, but significantly higher than other temperature zone. The dry matter exportation and transformation rate is far greater than the apparent transportation rate of rice varieties in Heilongjiang Province, therefore, it should be mainly focus on the distribution and transportation of dry matter in the late stage to improve the yield of rice varieties.