陕西林业科技2023，Vol.51Issue(4)：11-14,24,5.DOI:10.3969/j.issn.1001-2117.2023.04.003
红心杉与杉木人工林生产力及林地土壤肥力差异分析
Afforestation Effect and Soil Fertility Difference between Red—heart Chinese Fir and Chinese Fir
摘要
Abstract
In order to optimize the cultivation measures of Chinese fir and achieve sustainable manage-ment of Chinese fir forests,this experiment took Chinese fir and its variant red—heart fir as the ob-jects,the changes in growth and soil fertility of 16—year—old red heart fir and Chinese fir stands in 14-18 site index forests were observed.The results showed that there were significant differences in stand growth among different site indexes and different tree species.Among them,the higher the site index,the greater the stand growth,but when the site index was low(14),the tree height,breast height diameter,single tree volume,and stock volume of Chinese fir were greater than those of red—heart fir,while when the site index was high(18),the growth performance of red—heart fir forest was better.The content of soil organic matter,total nitrogen,alkali—hydrolyzed nitrogen,available potassium,available phosphorus,and pH value in each forest land showed a rising trend with the in-crease of site index.Overall,except for the available phosphorus content and pH value,the other soil fertility indicators were higher in the red—heart fir forest land,and the lower the site index,the more significant the difference.Through principal component analysis,the comprehensive score of soil fer-tility in each forest stand was higher with higher site index,and red—heart fir was higher than Chi-nese fir under any site condition.It is concluded that the red—heart fir had a higher ability to maintain soil fertility than Chinese fir,but Chinese fir had better environmental adaptability than red—heart fir.In poor site,Chinese fir could be selected for planting,while in good site,red—heart fir could be promoted for planting.关键词
杉木/适地适树/定向培育/立地质量Key words
Chinese fir/suitable tree/directive breeding/site quality分类
农业科技引用本文复制引用
莫德田..红心杉与杉木人工林生产力及林地土壤肥力差异分析[J].陕西林业科技,2023,51(4):11-14,24,5.基金项目
广东省重点领域研发计划资助(2020B020215012). （2020B020215012）
