摘要
本文以江苏宜兴林场、江西宜丰花桥林场以及南京林业大学下蜀实习林场等试验地内毛竹林出笋与幼竹生长资料和从江苏宜兴气象站抄录整理而成的1976～1986年中每年的11个气象资料为原始材料,定量地对毛竹林出笋及幼竹的生长发育的内在规律性及其与气象因子之间的关系进行了系统的研究。回归分析表明,影响翌年竹林出笋及幼竹生长发育的6个主导气象因子是7、8、9三个月的平均温度、年平均温度、年降水量、温暖指数、日均温≥10℃积温和7、8、9三个月的平均降水量。借助于有序样本聚类分析方法,将竹林整个出笋期划分为三个时期即出笋初期、出笋盛期和出笋末期。最佳拟合求算表明,毛竹幼竹高生长用单分子生长式来拟合精度较高。通过对正态累积函数和概率单位之间关系的研究可知,毛竹高生长在竹笋出土后21天左右进入速生期,竹笋出土后30天左右达高生长高峰期,竹笋出土后38天左右达高生长速生末期。本文还就如何根据幼竹的生长发育规律,采用相应的营林措施来培育速生丰产林等有关问题进行了探讨。
According to the data on bamboo shooting and the growth and development of young bamboo of Phyllostachys pubescens collected from the experimental plots in Yixing Forestry Station of Jiangsu,Huaqiao Forestry Station of Jiangxi and Meteorolog- ical Phenomena Station of Jiangsu,the writers reported the lawsof growth and development of the shoot and young bamboo of Ph.pubescens and the relations between the growth and the leading climatic factors in this paper. Regression analysis shows that the leading climatic factors which influence on bamboo shooting and the growth and develop- ment of bamboo in next year are mean temperature from June to September,annual temperature,warm index,annual precipitat- ion,accumulated temperature(≥10℃)and mean precipitation from June to September.With the help of ordered cluster anal- ysis,three stages of bamboo shooting period were classified. They are initial stage,abundant stage,and later stage.The height growth of phyllostachys pubescens can be simulated by mono-molecule formula.Study on the relations between normal accumulated function and probability unit indicates that the height growth enters fastgrowing stage after bamboo shoots go out above the ground for about 21 days,peak stage for about 30 days, and later growing stage for about 38 days. Based on the law of growth and development of young bam- boo,some problems about how to take various managememt mea- sures and to cultivate fast-growiong and high yield forests are also studied in this paper.
出处
《竹子研究汇刊》
北大核心
1991年第1期64-71,共8页
Journal of Bamboo Research
关键词
毛竹
幼竹生长
竹笋
Phyllostachys pubescens
Growth of young bamboo
Leading climatic factors
Classification of bamboo shooting period
Simulation of height growth
Computer
