论文部分内容阅读
对重穗型杂交稻 D优 5 2 7与中等穗型的杂交稻组合汕优 6 3和 R5 2 7的栽培生理特性进行了比较。重穗型杂交稻 D优 5 2 7秆硬抗倒、穗大粒多、库容量大 ,单穗重大 ,产量高 ,且具很高的增产潜力。其茎鞘物质在齐穗后向穗部的转运量大、转运率和转换率高 ,但后期光合生产量相对较低 ,从而导致库虽大但由于源的相对不足而使库的充实度偏低。因此 ,增强后期光合生产力以增加源的供应是提高其籽粒充实度 ,进一步提高其产量的关键。 D优 5 2 7已具备高质量群体结构特征 ,对进一步发挥其高质量群体优势的高产栽培技术途径进行了探讨
The physiological characteristics of hybrid rice D You 5 27 mixed with medium panicle type Shanyou 6 3 and R5 27 were compared. The heavy-ear hybrid rice D You 527 was hard-hard-resistant, had a large number of spikelets, large storage capacity, large single spike, high yield and high yield potential. The stems and sheaths of the material after heading to the spike transpiration, transfer rate and conversion rate, but late photosynthetic production is relatively low, resulting in the library is large but due to the relative lack of the source of the library fullness of the degree of partiality low. Therefore, enhancing the photosynthetic productivity in the late stage to increase the supply of the source is the key to improve its grain filling degree and further increase its yield. D You 5 27 already has the characteristics of high-quality group structure, to further give play to its advantages of high-quality groups of high-yield cultivation techniques and approaches were discussed