杉木不同种源耐瘠薄生长对比分析  

Comparative Analysis on Barren Growth of Different Provenances of Cunninghamia lanceolata

作　　者：孟庆银 Meng Qingyin(Guangzhuang National Forest Farm in Fujian Province ,Sanming 365050)

机构地区：[1]福建省沙县官庄国有林场,三明365050

出　　处：《湖北林业科技》2021年第5期15-19,共5页Hubei Forestry Science and Technology

基　　金：福建省林业科技项目“不同种源杉木细根功能属性对土壤养分响应差异及种苗优选研究”(闽林科便函[2020]9号);国家自然科学基金项目(31960308)。

摘　　要：为对比杉木不同种源在瘠薄土壤生长状况,以福建省沙县官庄国有林场、福建省将乐国有林场、福建省尤溪国有林场、福建省光泽华侨国有林场、福建省洋口国有林场、福建省邵武卫闽国有林场6个国家级林木良种基地1 a生杉木第3代种子园实生裸根苗为研究对象,采用盆栽方法,土壤来自杉木林分40~60 cm深的土壤,在盆栽1 a分别测定不同种源苗高和地径,结果表明:洋口种源、尤溪种源和官庄种源,相对6个种源苗高生长总数平均值分别增长了5.7%、5.6%和4.1%;官庄种源和洋口种源,相对6个种源地径生长总数平均值分别增长了11.0%和0.8%。通过聚类分析,可将6个杉木不同种源分为3个类群,A类群是尤溪种源、洋口种源和官庄种源具有较高的苗高和较粗的地径,在低养分土壤生长较快;B类群是华侨种源和卫闽种源在低养分土壤生长中等;C类群是将乐种源在低养分土壤中生长较慢。In order to compare the growth of different provenances of Cunninghamia lanceolata in barren soil,In this paper,a case study of Guanzhuang National forest farm in Shaxian County,Jiangle National forest farm,Youxi National forest farm,Guangze overseas National forest farm,Yangkou National forest farm,Shaowuwei National forest farm in Fujian Province.The naked root seedlings from the third generation seed orchard of 1-year-old C.lanceolata in 6 national forest breeding bases of Fujian shaowuwei National Forest Farm were studied,Pot culture was used,The soil is 40~60 cm deep in the C.lanceolata forest,The seedling height and ground diameter of different provenances were measured in one year,The results showed that Yangkou,Youxi and Guanzhuang provenance,Compared with the six provenances,the average growth of seedling height increased by 5.7%,5.6%and 4.1%respectively;Compared with the six provenances,Guanzhuang provenance and Yangkou provenance increased by 11.0%and 0.8%respectively.By cluster analysis,the six provenances of C.lanceolata could be divided into three groups,Group A is Youxi provenance,Yangkou provenance and Guanzhuang provenance,which has higher seedling height and thicker ground diameter,and grows faster in low nutrient soil;Group B is the Chinese provenance and Weimin provenance,which grows moderately in low nutrient soil;Group C is Jiangle provenance,which grows slowly in low nutrient soil。

关 键 词：杉木种源 瘠薄土壤 盆栽 生长量 

分 类 号：S791.27[农业科学—林木遗传育种]