花曲柳速生丰产造林技术及生长调查

Investigation on Fraxinus rhynchophylla Fast Growing and High Yield Afforestation Technology and Growth

在不同条件下对花曲柳(Fraxinus rhynchophylla Hance)进行速生丰产造林试验,对其生长情况进行调查分析.花曲柳幼林期,2种造林密度1m×1m和1m×1.5m对花曲柳生长影响差异不大;花曲柳幼林在阴坡生长速度极其缓慢,应选择阳光充足的立地造林;通过适当断根处理的花曲柳苗木,地径、树高的生长速度分别是同等条件下未切根苗木地径、树高生长速度的1.13倍和1.19倍.因此,可采用切根法营造速生丰产林,但要求有相应的技术来提高苗木的成活率.

Under different site conditions,fast growing and high yield plantation experimens on Fraxinus rhynchophylla Hance have been carried on.During the young plantation of Fraxinus rhynchophylla Hance,afforestation density from 1m×1m to 1m×1.5m affect it little.In the shade slope,the growing speed of Fraxinus rhynchophyllaHance is rather slow,so sunny slope with enough site is required.Under the same condition,the growing speed of the seedlings,diameter and tree height of Fraxinus rhychophylla Hance without treated by root cuttings is 1.13 or 1.19 times than that of the Fraxinus rhynchophylla Hance treat by root cuttings.Thus,the method of root cuttings should be applied to culture the fast growing and high yield plantation,however,the high technology have to enhance the survival rate of seedlings.