江西九连山银钟花生长过程分析

Analysis on Growing Process of Halesia macgregorii in Jiulianshan Mountain of Jiangxi Province

为了解银钟花自然生长状况，揭示其自然生长过程，采用54年生的银钟花Halesia macgregorii树干解析数据，对江西九连山常绿阔叶林中银钟花树高、胸径、材积的生长过程进行分析。结果表明，5~10龄阶树高生长速度最快，15~35龄阶为胸径生长盛期，35龄阶进入材积生长盛期，树龄54年时，材积生长仍处生长盛期，平均生长量和连年生长量曲线未相交，林木尚未达到数量成熟阶段。银钟花自然生长较缓慢，种子发芽困难，天然生长的植株稀少，应开展人工繁育和回归自然与种群重建研究，人工辅助银钟花扩大种群数量。

In order to understand the natural growth status of Halesia macgregorii, revealing its natural growth processes, based on a stem analysis data of 54-year-old Halesia macgregorii in Jiulianshan Mountain of Jiangxi Province, analyzed H. macgregorii tree height, DBH, volume growth process. The results showed that 5-10 age class tree height of the fastest growing, 15-35 age class for the vigorous growth period of DBH, 35 age class into volume vigorous growth period. Age of 54 years, the volume growth was still growing vigorously. The curve of average increment and the curve of current annual increment did not intersect, which showed the H. macgregorii did not reach the quantity maturity. H. macgregorii growth was relatively slow, seed germination difficulties, natural growth of plants was scarce, artificial cultivation of seedlings should be carried out and return to nature and the reconstruction of the population, artificial supplementary expand its population.