摘要
在闽南山地开展桉树与卷荚相思不同混交比例和混交方式的造林试验。结果表明：桉树与卷荚相思可采用星状或行带状混交,较好的混交方式为：星状混交的卷荚相思株数比例控制占整个林分的30%-50%,行带状混交以3行相思2行桉树为宜。这2种混交模式不但能有效促进林木生长、避免相思被压、维持林分稳产,尤其对提高规格材出材量有利。与桉树纯林相比,该混交林分中桉树的树高、胸径、单株材积可分别提高3.75%-11.25%、6.04%-10.74%和18.77%-36.97%,同时林分蓄积也比较高,可与桉树纯林相当;而且,该2种混交模式一定程度上可改善土壤理化性状,维护地力,可作为闽南山地中短轮伐期桉树人工林持续经营技术模式。
Afforestation experiments of Eucalyptus and Acacia concinnatai with different proportions and mixed patterns are conducted in south Fujian hilly land. The results show that the best proportion of stellate mixed pattern for Eucalyptus and Acacia concinnatai are 30% - 50%; The best proportion of ribbon mixed pattern are 2： 3. Both mixed pattern can effectively promote tree growth,avoid being pressed,maintain stable productivity and specifically increase the amount of beneficial merchantable lumber. Compared with pure eucalyptus forest,tree height,DBH,individual volume of Eucalyptus are increased by3. 75% - 11. 25% 、6. 04% - 10. 74% and 18. 77% - 36. 97% respectively. Furthermore,the stand volume is relatively high which is quite to the pure eucalyptus forests. In addition,under these mixed patterns,the soil physical and chemical properties are improved,and soil fertility is maintained in certain way. These results also demonstrate that these mixed patterns are the best model for Eucalyptus plantation management in south Fujian hilly land.
出处
《林业调查规划》
2015年第1期91-95,共5页
Forest Inventory and Planning
基金
福建省林业厅闽林(2002)科10号"桉树可持续经营技术研究"课题
关键词
桉树
卷荚相思
混交经营
混交模式
闽南山地
Eucalyptus
Acacia concinnatai
mixed plantation management
mixed pattern
South Fujian hilly land.
