摘要
对２至４年生的杉木子代林７个物候相进行观察，通过稳健主分量分析，参试的１１２个家系可分为４类物候型，即：（Ⅰ）芽早展开晚封顶型；（Ⅱ）芽晚展开晚封顶型；（Ⅲ）芽早展开早封顶型；（Ⅳ）芽晚展开早封顶型。造林４ａ后，第Ⅰ、Ⅱ、Ⅲ种类型比第Ⅳ种类型树高生长量分别大４１．２１％、２０．００％和１７．５６％。造林１０ａ后验测，第Ⅰ、Ⅱ、Ⅲ种类型比第Ⅳ类型树高生量仍然分别大３７．５０％、１５．７８％和２３．３６％。说明在广东省通过物候测定来进行生长量的早期选择是有效的、可行的。建议在杉木南带多采用第Ⅰ类型家系造林。
years old Chinese fir progenytest forest established in the Forest Research Institute of Xinyu City had been observed in 7 phenologies 112 tested families could be divided into four phenological types polymerization analysis of main component:()Early budstart and late budtermination.()Late budstart and late budtermination.() Early budstart and early bud termination. () Late budstart and early budtermination. In the four year after forest establishment, the growth of height of ,,, were 41.21%,20.00%,17.56% which were larger than that of ,in the tenth year,the growth of height of ,, was still larger by 37.50%,15.78%,23.36% respectively. The results suggest that early selection of phenological types of Chinese fir be feasible and effective. It is suggested that the families of first phenological types is adopted to forest in south Chine.
出处
《林业科学研究》
CSCD
北大核心
1999年第3期291-298,共8页
Forest Research
基金
1986~1990年国家科技攻关项目
关键词
杉木
家系
物候型
早期选择
Cunninghamia lanceolata
family
phenological type
early selection
