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对不同插秧苗数条件下主要性状及整齐度的分析结果表明 ,与丛插 (5苗 /穴 )相比 ,单苗插秧时 ,参试品种均表现单株穗数大幅度减少 ,穗粒数较大幅度增加 ,出穗期明显延迟 ,着粒密度增大 ,产量显著降低 ,而其它性状各品种表现不一。单苗插秧后各性状的整齐度也发生了较大的变化 ,平均变化幅度最大的是单株穗数。各品种的整齐度均明显下降 ,其变化幅度依次为出穗日数、茎高、穗长、一次枝梗数和穗粒数
The analysis of the main characters and the uniformity of seedling number under different planting conditions showed that the number of spikelets per plant was greatly reduced and the number of grains per spike Compared with the control, the grain yield increased significantly, the heading time was significantly delayed, the grain density increased, the yield decreased significantly, while the other traits varied. Single seedling transplanting the traits of the uniformity has also undergone major changes, the average rate of change is the largest single plant spike. The uniformity of all varieties were significantly decreased, the rate of change followed by the heading days, stem height, spike length, number of primary branches and grains per spike