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| 1年生桢楠容器苗质量分级研究 | |
| 引用本文： | 陈孝,纪程灵,周正清,彭先凤,杜昌远.1年生桢楠容器苗质量分级研究[J].农业科学与技术,2014(11):1990-1994. |
| 作者姓名： | 陈孝 纪程灵 周正清 彭先凤 杜昌远 |
| 作者单位： | 1. 湖南省林业科学院,湖南长沙,410004 2. 保靖县林业局,湖南保靖,416500 3. 龙山县林业局,湖南龙山,416800 4. 桑植县林业局,湖南桑植,427100 |
| 基金项目： | 湖南省林业科技项目“珍贵用材树种种质资源收集与良种选育”(2010-06)。Supported by Forestry Science and Technology Program of Hunan Province |
| 摘 要： | 为了制定1年生桢楠容器苗的分级标准，提高桢楠苗木种植成活率，采用系统聚类分析方法，建立以苗高和地径为质量分级指标的分级体系，获得3级分级标准，即Ⅰ级苗：苗高≥38 cm，地径≥0.65 cm；Ⅱ级苗：38 cm＞苗高≥31.7 cm，0.65 cm＞地径≥0.56 cm；Ⅲ级苗：苗高＜31.7 cm，地径＜0.56 cm。 |
| 关 键 词： | 桢楠 容器苗 聚类分析 苗木分级 |
Study on Grading Standard for One-Year-Old Container Seedling Quality of Phoebe zhennan |
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| Xiao CHEN,Chengling JI,Zhengqing ZHOU,Xianfeng PENG,Changyuan DU.Study on Grading Standard for One-Year-Old Container Seedling Quality of Phoebe zhennan[J].Agricultural Science ＆ Technology,2014(11):1990-1994. | |
| Authors: | Xiao CHEN Chengling JI Zhengqing ZHOU Xianfeng PENG Changyuan DU |
| Institution: | Xiao CHEN,Chengling JI,Zhengqing ZHOU,Xianfeng PENG,Changyuan DU (1. Hunan Academy of Forestry, Changsha 410004, China; 2. Forestry Bureau of Baojing County, Baojing 416500, China;3. Forestry Bureau of Longshan County, Longshan 416800, China; 4. Forestry Bureau of Sangzhi County, Sangzhi 427100, China) |
| Abstract: | In order to improve the survival rate of planting seedlings of Phoebe zhen-nan, the grading standard for one-year-old container seedlings of Phoebe zhennan was developed by using cluster analysis. The results showed that the quality of Phoebe zhennan container seedlings could be estimated from seedling height and ground diameter. The Phoebe zhennan container seedlings were divided into 3 grades： Grade 1 （seedling height ≥ 38 cm; ground diameter ≥ 0.65 cm）, Grade 2 （31.7 cm ≤ seedling height 〈 38 cm; 0.56 cm ≤ ground diameter 〈 0.65 cm） and Grade 3 （seedling height 〈 31.7 cm; ground diameter 〈 0.56 cm）. |
| Keywords: | Phoebe zhennan Container seedling Cluster analysis Seedling grading |
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