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本研究结果表明,按主茎每穗两次枝梗数与与一次枝梗数的比值(一枝/一枝)可将水稻品种分为三类;I型为一次枝梗优势型,Ⅱ型为一、二次枝梗并重型,Ⅲ型为二次枝梗优势型。二枝/一枝与每穗总粒数、空秕率,剑叶长与宽及创叶面积等,都呈显著的正相关。上位一、二节间大维管柬数的比值在梗稻品种中与穗型有一定的关系,但在籼稻品种中则没有关系。又该两个节间大维管柬数的比值,籼稻与梗稻显著不同。前者的比值大,后者的比值小,对不同穗型品种进行栽培条件的调控试验,Ⅱ型品种的穗型不发生变化,Ⅱ型品种变化较大,Ⅲ型品种变化较小,根据不同穗型品种一、二次枝梗数的变化幅度,在生产上可视不同穗型品种而采取不同的栽培方式。
The results of this study showed that rice varieties could be divided into three types according to the ratio of the number of branches to the number of primary branches per branch of the main stem (one branch per branch); type I was the primary branch, Secondary branch stems and heavy, type Ⅲ secondary branchlets dominant type. There was a significant positive correlation between two branches / one branch and the total grain number per panicle, emptying rate, length and width of flag leaf, The ratio of the larger vasoconstrictor to the upper vasoconstrictor to the second internode had a certain relationship with the panicle type in the stem rice varieties, but it did not matter in the indica rice varieties. And the ratio between the two internode large tube Cambodia, indica and stem rice significantly different. The ratio of the former is large, and the latter is small. The regulation test of cultivation conditions for different panicle varieties does not change the panicle type of type Ⅱ, the type Ⅱ and type Ⅲ are more varied, Variety of primary and secondary branches of the rate of change in the production of different varieties of spike visualization and adopt different cultivation methods.