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对按ｐ×ｑ模式配组的３６个亚种间杂交稻组合，进行了物质生产和分配相关性状的观察和分析。结果表明，亚种间杂交稻物质生产的杂种优势普遍存在，供试３６个亚杂组合中３４个具有超亲优势，总体平均超过亲本４１．３４％，优势在出穗后尤为明显，超亲优势值达４６．９５％；８５％的亚杂组合的物质生产量超过籼型三系杂交稻汕优６３，无一组合显著低于汕优６３，差异主要表现在出穗后，其平均值超过汕优６３达５０．８５％。亚杂种杂交稻组合物质生产能力较强与其普遍超亲的同化面积和优于籼杂的叶片质量有关；抽穗后对茎鞘贮存物质的利用能力较差，但由于其强大的物质生产优势，穗部增重优势明显。
Thirty-six subspecies hybrid rice combinations grouped according to the p × q model were used to observe and analyze the traits associated with material production and distribution. The results showed that the heterosis of cross-subspecies hybrid rice production was ubiquitous. 34 of the 36 sub-combinations showed super-pro-heterosis, with an average of more than 41.34% of the total. The advantages were especially obvious after heading, The dominant value was 46.95%. The material yield of 85% sub-combinations was higher than Shanyou 63 of indica three-line hybrid rice, and none of them was significantly lower than that of Shanyou 63, More than Shantou 63 50.85%. Sub-hybrid hybrid rice combination material production capacity is stronger than its common super-ancestral area and is superior to indica hybrid leaf quality; stems and sheaths after heading material utilization ability is poor, but because of its strong material production advantages, spike Ministry of weight gain obvious advantages.