立地条件和苗木类型对红锥造林成效的影响

Effects of Site Conditions and Seedling Types on Afforestation of Castanopsis hystrix

应用多元方差分析和多重比较对红锥不同类型苗木在不同立地条件下的造林成效进行对比分析。结果表明,立地条件和苗木类型对三年生红锥林分保存率及生长量指标均有显著影响,其中保存率较高的处理为优良立地×容器苗和中等立地×容器苗,树高最高的处理为优良立地×容器苗,胸径较大的处理为优良立地×容器苗和优良立地×裸根苗,立木材积最大的处理是优良立地×容器苗。分析立地条件和苗木类型对造林效果的影响可知:立地条件相同时,容器苗造林效果优势明显,但容器苗的这种优势会随着立地条件改善而减弱;立地条件的改善可促进林分各项指标的提高,但立地条件较好时,立地的差异对林分保存率影响较小。

The afforestation of different types of seedlings of Castanopsis hystrix Miq.under different site conditions were compared and analyzed by multivariate analysis of variance and multiple comparison.The results showed that site conditions and seedling types had significant effects on the preservation rate and growth index of three-year-old Castanopsis hystrix stand,and the treatments with higher preservation rate were excellent site×container seedling and medium site×container seedling,the treatment with the highest tree height was excellent site×container seedling,the treatments with larger DBH were excellent site×container seedling and excellent site×bare root seedling,and the treatment with the largest standing volume was excellent site×container seedling.By analyzing the effects of site conditions and seedling types on afforestation,it can be seen that when the site conditions are the same,the advantage of container seedlings afforestation is obvious,but this advantage of container seedlings will weaken with the improvement of site conditions;the improvement of site conditions can promote the improvement of stand indexes,but when the site conditions are good,the site difference has little effect on stand preservation rate.