吉首大学学报(自然科学版) ›› 2021, Vol. 42 ›› Issue (2): 65-71.DOI: 10.13438/j.cnki.jdzk.2021.02.012

• 生物 • 上一篇    下一篇

川黄柏一年生实生苗质量的分级标准

刘年元,钟青山,向祖恒,彭先凤,曾慧杰,向华,向明,向才海,黄正明   

  1. (1.湖南省湘西土家族苗族自治州林业局,湖南 吉首 416000;2.湖南省龙山县林业局,湖南 龙山 416800:3.湖南省林业科学院,湖南 长沙 410004)
  • 出版日期:2021-03-25 发布日期:2021-08-29
  • 通讯作者: 向祖恒(1963—),男,湖南龙山县人,湖南省龙山县林业局高级工程师,硕士,主要研究森林培育及森林植物.
  • 作者简介:刘年元(1977 —),男,湖南澧县人,湖南省湘西土家族苗族自治州林业局高级工程师,主要研究森林培育

Classification Standard for One-Year Seedling of Phellodendron chinense

LIU Nianyuan,ZHONG Qingshan, XIANG Zuheng, PENG Xianfeng, ZENG Huijie, XIANG Hua,XIANG Ming, XIANG Caihai, HUANG Zhengming   

  1. (1.Forestry Bureau of Xiangxi Tujia and Miao Autonomous Prefecture,Jishou 416000,Hunan China;2. Forestry Bureau of Longshan County, Longshan 416800, Hunan China;3.Hunan Academy of Forestry,Changsha  410004, China)
  • Online:2021-03-25 Published:2021-08-29

摘要:为有利于指导生产实践,推动川黄柏实生苗培育规范化、标准化,以湖南省龙山县大安乡2020年培育的川黄柏1年生实生苗为研究对象,以72个1 m×1 m样方2 564株样苗为研究样本,以地径、苗高为苗木质量分级指标,采用K-均值聚类法及标准差法,划分质量分级值.经综合评定,确定川黄柏1年生实生苗质量分级标准为Ⅰ级苗地径D≥1 cm,苗高H≥100 cm;Ⅱ级苗地径D 0.6~<1 cm,苗高H 60~<100 cm;Ⅲ级苗地径D<0.6 cm,苗高H<60 cm.在该标准下,本次研究样本Ⅰ、Ⅱ级苗占比64.8%.

关键词: 川黄柏, 实生苗, 质量分级

Abstract: Aiming to instruct the field management and to push the normalization and standardization of Phellodendron chinense Schneid seedling cultivation, the critical values for classification of 1 year’s old Phellodendron chinense Schneid seedlings were determined using materials of 2 564 plants in 72 sample plots with 1 m×1 m size in Dan township, Longshan county, Hunan province according to quality indexes of ground diameter (D) and height (H) of seedling with K-average value clustering method and standard deviation method. The comprehensive evaluation result was as fellows, the standard for class Ⅰ seedling was D≥1 cm and seedling H≥100 cm, and class Ⅱ seedling was 0.6~<1 cm for D, and 60~<100 cm for seedling H, and class Ⅲ seedling was D<0.6 cm and seedling H<60 cm. According to this standard, the proportion of class Ⅰ and class Ⅱ of Phellodendron chinense is 64.8%.

Key words: Phellodendron chinense, seedlings, classification by quality

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