洋葱育苗早晚与密度,直接影响着洋葱的产量和效益。我们于1994年9月13-15日,采取畦面先起土,灌足底墒水的方法进行洋葱育苗。每米~2撒种6-8g,成苗350-450株,平均为395株。平均培育出单株重2.1g的一级苗169株,占42.8％;单株重1.15g的二级苗196株,占49.6％;单株重0.55g的三级苗30株,占7.6％。大小苗试验小区产量统计分析结果,一级苗处理产量最高,平均为 108.2kg/13.33m~2,其次是二级苗（72.9kg/13.33m~2）,再次是三级苗（54. 3kg/13.33m~2）。 方差分析处理间差异极显著（F=28.290）。L.S.R法多重比较,一级苗 Onion seedlings sooner or later and the density, a direct impact on the yield and benefits of onions. On September 13-15, 1994, we adopted a method of raising seedlings by applying the principle of first raising soil and filling enough water at the end of foot. Each meter ~ 2 sowing 6-8g, 350-450 into seedlings, with an average of 395 strains. There were 169 primary seedlings weighing 2.1 g per plant (42.8%), 196 secondary seedlings weighing 1.15 g (49.6%), 30 tertiary plantlets weighing 0.55 g (7.6% . The results of statistical analysis showed that the output of the first seedling was the highest, with an average of 108.2kg / 13.33m ~ 2, followed by the second seedling (72.9kg / 13.33m ~ 2) and the third seedling (54. 3kg /13.33m ~ 2). Variance analysis was very significant (F = 28.290). L.S.R multiple comparison, a seedling