不同穗型水稻籽粒灌浆差异的研究

对三种不同穗型水稻灌浆期进行研究，了解各类型水稻的灌浆特点，从中分析比较各类型水稻灌浆期强弱势粒间的差异。结果表明：穗数型品种的强弱势粒到达最大灌浆速率的时间差值最小，较为同步，生长上表现灌浆快；穗重型品种的强弱势粒到达最大灌浆速率的时间差值最大，而且弱势粒灌浆启动较慢，生长上表现灌浆慢；中穗型介于两者之间。原因在于各类型品种强势粒灌浆时间较一致；而各类型品种弱势粒间灌浆时间差异较大，导致不同穗型水稻品种灌浆不一致。

Research on the Grain-filling Difference of Different Spike Types Rice Varieties

The difference of strong particles and sick particles of three different spike types in filling stage was analyzed after studying their grain-filling characteristics.The results indicated that the time difference of reaching the largest filling speed between strong particles and sick particles of more-spike type variety was minimum,and growth presented filling faster;The weight-spike type was the opposite to more-spike type,and the middle-spike varieties between them.The reason was that the filling time of ...