Journal of Jishou University(Natural Sciences Edition) ›› 2021, Vol. 42 ›› Issue (2): 65-71.DOI: 10.13438/j.cnki.jdzk.2021.02.012

• Biological • Previous Articles     Next Articles

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

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

WeChat e-book chaoxing Mobile QQ