摘要
在不同环境下的生态适应过程中,树种会受自然条件的影响,不同种源表现出不同的生长形态和生理特性。为了选择出适宜于江西省的苦楝优良种源,对40个苦楝种源的4年生幼林树高、胸径和材积生长进行测定与分析,结果表明:1)苦楝不同种源之间的树高、胸径和材积生长量均存在极显著性差异,苦楝种源群体树高、胸径、材积总均值分别为:3.38 m、3.66 cm、0.0028 m3;35号种源(广东增城种源)树高、胸径生长量最大,其树高平均生长量为4.00 m,大于群体总均值18.34%,胸径平均生长量为4.63 cm,大于群体总均值26.50%;7号种源(广西博白种源)的材积生长量最大,为0.0056 m3,大于群体总均值100%;2)对40个苦楝种源的树高和胸径指标进行聚类,将参试材料分为4类,其优劣顺序为:类群Ⅲ>类群Ⅳ>类群Ⅱ>类群Ⅰ;3)7号(广西博白)、9号(广西容县)、10号(赣州南康三江)、14号(广西北流)、29号(宜春袁州)、35号(广东增城)等6个苦楝种源,其种源试验林生长整体显著优于CK1(章贡蟠龙种源)和CK2(大余种源),具有明显的速生性,可初步作为优良种源,供江西地区及其种源所在地苦楝造林用种。
In the process of ecological adaptation under different environments,the tree species were affected by natural conditions,and different provenances show different growth morphology and physiological characteristics.In order to select superior provenances of Melia azedarach suitable for Jiangxi Province,the growth of tree height,DBH and volume of 40 M.azedarach provenances were measured and analyzed.The results show that:(1)There were significant differences in tree height,DBH and volume growth among different M.azedarach provenances.The total mean tree height,DBH and volume of M.azedarach provenances were 3.38 m,3.66 cm and 0.0028 m3 respectively.The growth of height and DBH of No.35 provenance(Zengcheng Guangdong)was the largest,the average growth of height was 4.00 m,which was 18.34%higher than the total population average,and the average growth of DBH was 4.63 cm,which was 26.50%higher than the total population average.The volume growth of No.7 provenance(Bobai Guangxi)was 0.0056 m3,which was more than 100%of the total population average.(2)The tree height and DBH indexes of 40 M.azedarach provenances were clustered,and the test materials were divided into four groups,with the order of groupⅢ>groupⅣ>groupⅡ>group I.(3)The were 6 M.azedarach provenances,including 7(Bobai Guangxi),9(Rongxian Guangxi),10(Nankang Sanjiang Ganzhou),14(Beiliu Guangxi),29(Yuanzhou,Yichun)and 35(Zengcheng Guangdong),were significantly better than CK1(Zhanggong Panlong provenance)and CK2(Dayu provenance),and had obvious fast-growing characteristics,which could be used as a good provenance for afforestation of M.azedarach in Jiangxi Province and its provenance area.
作者
欧斌
朱江华
韩璐
李畅
李远章
徐晨
郭庭铣
崔子佳
Ou Bin;Zhu Jianghua;Han Lu;Li Chang;Li Yuanzhang;Xu Chen;Guo Tingxian;Cui Zijia(Jiangxi Environmental Engineering Vocational College,Ganzhou Jiangxi 341000,China;Ganzhou City Senyuan Science and Technology Seedlings field,Anyuan Jiangxi 342100,China;Forestry Bureau of Dayu County,Dayu Jiangxi 341500,China)
出处
《南方林业科学》
2021年第2期26-31,62,共7页
South China Forestry Science
基金
江西省赣州市科技项目“苦楝种源试验研究”。
关键词
苦楝
种源
生长性状
聚类分析
Melia azedarach
provenance
growth traits
cluster analysis
