论文部分内容阅读
对亚种间、品种间杂交稻和常规稻的干物质生产积累、运转和籽粒充实度进行了比较研究。结果表明，亚种间杂交稻穗大粒多，增产潜力大。在整个生育过程中，一直具有较强的干物质生产优势；在抽穗至成熟期，干物质运转率高，其干重颖花比值小；籽粒充实度差的主要原因是“库大源不足”。
The dry matter production, translocation and grain filling degree of subspecies, inter-breed hybrid rice and conventional rice were compared. The results showed that the intersubspecific hybrid rice had a large number of grains and large yield potential. In the whole process of birth, it has always had a strong advantage of dry matter production. From heading to maturity, the dry matter running rate is high, the dry weight ratio of spikelet is small. The main reason of poor grain filling degree is " .