对 1 9个杉木初选半同胞优良家系进行育苗试验 ,结果表明 :优良家系种子的发芽势、苗木的抗病性及高生长量平均数分别比对照高 2 0 6%,82 1 %和 33 6%,表现出明显的遗传优势 ;各家系苗高生长量和生长节律上有显著差异 ,千粒质量、场圃发芽率、抗病性和抗寒性上也都有明显差别。因此 ,在杉木育苗管理上应分家系或家系类群采取相应的育苗管理措施。表 6参 5 The results showed that the germination potential, the disease resistance and the average growth of seedlings of elite families were 20.6%, 82.1% and 33% higher than that of the control respectively 6%, showing obvious genetic advantage; each family has a significant difference in seedling height growth and growth rhythm, and there is also a significant difference in the quality of grain, germination rate of field nursery, disease resistance and cold resistance. Therefore, the management of Chinese fir seedling should be divided into pedigree or pedigree groups to take appropriate nursery management measures. Table 6 reference 5