水稻分蘖特性与产量的关系

以辽宁省近年来育成水稻新品种(系)为试材,研究分蘖特性与物质生产和分配及产量结构关系的结果,分蘖特性存在显著的品种间差异,与物质生产及分配的相关性却都没有达到显著水平,最高分蘖数和分蘖增长率与穗数呈极显著的正相关,而最高分蘖数、分蘖增长率和分蘖减少率与产量均表现负相关,成穗率与穗数、理论产量和实际产量均表现正相关。选育分蘖变化平稳,成穗率高的品种,有利于提高产量。

The Relationship between Tilling Character and Yield

Rice varieties developed in recent years in Liaoning were used as materials, the effect of tilling characters on dry matter accumulation and distribution and yield was studied .The results showed that the difference on tilling character of rice varieties was significant. The correlation between tilling character and dry matter accumulation and distribution was insignificant. There was a significant positive correlation between the most number of tilling, the rate of tilling increase and ear number per hectare .The most number of tilling and the rate of tilling increase and decrease were positively correlated with yield. The ear bearing tilling percentage significantly correlated with ear number per hectare and theoretical yield and realistic yield. It's beneficial for increasing yield by breeding rice variety that tilling number smoothly changed and high ear bearing percentage.