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利用种子园自由授粉混合种子和生产用天然林种子 ,通过田间对比试验 ,并对发芽率、发芽势、子代苗生长量和各年度生长量等经济指标进行测定。结果表明 :种子园种子具有良好的遗传品质 ,种子发芽势较对照增幅 6 2 86 % ,千粒重增幅 2 7 6 8% ,发芽率增幅 9 4 8% ;8年生子代高生长量较生产对照增幅 1 5 5 1 % ,地径增幅1 3 2 0 %。由此 ,确认哈密新疆落叶松种子园是成功的 ,良种品质较好 ,具有显著增产效果
The seeds were pollinated freely in the seed orchard and the seeds of natural forest were used for the test. The economic indicators such as germination rate, germination potential, seedling growth and annual growth were determined by field experiments. The results showed that seeds of seed orchard had good genetic quality. The seed germination potential was 6286% higher than that of the control, the grain weight was increased by 2768% and the germination rate was increased by 948%. The growth of 8-year-olds was higher than that of the control 1 5 5 1%, and an increase of ground diameter 1320%. Thus, to confirm Hami Xinjiang larch seed orchard is successful, better quality seeds, with a significant increase in yield