猴耳环苗木分级标准的研究  

Studies on the Standards of Seedling Degree of Pithecellobium clypearia

作　　者：刘欣[1] 潘超美[1] 郭颖 夏静[1] 郑芳昊[1] 梁钻姬[1] 肖斌[1] 

机构地区：[1]广州中医药大学中药学院,广东广州510006 [2]广州莱泰制药有限公司

出　　处：《广东林业科技》2011年第5期7-12,共6页Forestry Science and Technology of Guangdong Province

基　　金：广东省科技厅社会发展引导项目:道地中药材种子种苗质量标准体系建设(2008B080701030)

摘　　要：通过对7个月龄的猴耳环苗木分级标准的研究,采用随机抽样、逐步聚类分析等方法,对猴耳环苗木分级标准进行了初步探讨,提出了以苗高和地径作为分级标准的质量指标,得出了以下分级标准。Ⅰ级苗:苗高≥20.07 cm,地径≥0.48 cm;Ⅱ级苗:20.07 cm﹥苗高≥15.13 cm,0.48 cm﹥地径≥0.39 cm;Ⅲ级苗:苗高﹤15.13 cm,地径﹤0.39 cm。The classification standard of seven months seedlings of PitheceUobium clypearia Benth. was studied by random sampling and the clustering gradually analysis. Height and diameter were proposed as the quality indices for grading. The results showed that height ≥20.07 cm and diameter ≥0.48 cm as Grade Ⅰ ; 20.07 cm 〉 height≥15.13 cm and 0.48 cm 〉 diameter ≥0.39 cm as Grade Ⅱ ; height 〈 15.13 cm and diameter 〈0.39 cm as Grade Ⅲ.

关 键 词：猴耳环 苗木分级 逐步聚类 

分 类 号：S723.4[农业科学—林木遗传育种]