西南林业大学学报2016，Vol.36Issue(3)：23-29,7.DOI:10.11929/j.issn.2095-1914.2016.03.005
云南松不同7源1年生播7苗木生长节律分析
Growth Rhythm Analysis on Annual P lanting Seedlings of Pinus yunnanensis from Different P rovenances
摘要
Abstract
The ground diameter and the seeding height of Pinus yunnanensis from seven provenances of main distribution area were observed in the nursery of Southwest Forestry University. The growing rhythm of annual seedling from different provenances was analyzed by fitting the growth process of seedlings from different provenances with the Logistic equation. The result showed that the growing of the ground diameter and the seedling height both presented the rhythm in slow-fast-slow, which accorded with the“S” growing curve and represented the high accuracy of fitting. The growth processes of the ground diameter and the seedling height of annual seedlings were divided into the pro-phase of growing, the fast-growing phase and the growing anaphase based on the phenological parameter gained from fitted equation. Ground diameter and seedling height in different growing phases of starting, ending and the continu-ance were varied. The ground diameter and the seedling height existed the phenomenon of different-speed growing, the growth of seedling height started the fast-growing phase earlier than that of the ground diameter. The ground diam-eter, growth continuance and daily growth in the prophase of growing, the fast-growing phase and the growing ana-phase were 82-111 days, 81-108 days and 6-62 days, 0. 003-0. 008 mm, 0. 011-0. 027 mm and 0. 004-0. 017 mm, respectively, the seedling height were 33-61 days, 60-86 days, 80-133 days, 0. 115-0. 197 mm, 0. 231-0. 475 mm, 0. 44-0. 163 mm, respectively. The fast-growing phase was short, but the proportion of increment was the largest. The ground diameter and fast-growing phase accounted for 1/3 of the annual growing phase, and the increment accounted for more than 57% of the annual growth. The daily growth of the ground diameter during the fast-growing phase was 1. 3-3. 6 times of that in other phases. The daily growth of the seedling height during the fast-growing phase was 2. 0-6. 1 times of that in other two phases. According to the measurement, the growth of the ground diameter and the seedling height fitted the growing and theoretical growing extreme value k. The related coefficients were 0. 703 1 and 0. 998 9, respectively. The increment of the ground diameter and seedling growth in the fast-growing phase was highly related with the Logisic linear regression. The related coefficient was 0. 999 9 and 0. 999 9, respectively. The result showed that the growth in different provenances of Pinus yunnanensis accorded with the“S” growing curve, and it has sci-entific significance in seedling cultivation of Pinus yunnanensis under the direction of the Logistic equation.关键词
苗木/生长节律/Logistic方程/云南松/种源Key words
seedling/growth rhythm/Logistic model/Pinus yunnanensis/provenance分类
农业科技引用本文复制引用
罗元,孙琪,蔡年辉,周丽,陈诗,王大玮,许玉兰,李悦,段安安..云南松不同7源1年生播7苗木生长节律分析[J].西南林业大学学报,2016,36(3):23-29,7.基金项目
西南林业大学云南省省级重点学科(林学)资助；国家自然科学基金项目(31260191、31070591)资助；西南林业大学林学学位授权学科经费资助青年后备人才研究项目(5009750101-1)资助；西南地区生物多样性保育国家林业局重点实验室开放基金资助。 （林学）
