阳春砂种苗质量分级标准

Study on Seedlings Quality Grading Standard of Amomum villosum Lour

目的:建立阳春砂种子苗和分株苗的质量分级标准,规范阳春砂种苗生产流通,保障阳春砂规范化、规模化种植。方法:在全国砂仁主产区收集砂仁种子苗和分株苗,测定各种苗的株高、叶片数、丛芽数、球状茎粗、匍匐茎粗等指标,采用主成分分析和K类中心聚类法对数据进行分析并完成砂仁种苗分级。结果:阳春砂种苗可分为2个种类,每个种类2个等级。Ⅰ级种子苗:苗高≥40 cm,丛芽数≥3个;Ⅱ级种子苗:15 cm≤苗高<40 cm,1个≤丛芽数<3个;Ⅰ级分株苗:60 cm≤苗高<110 cm,5片≤叶片数<10片;Ⅱ级分株苗:110 cm≤苗高<180 cm,10片≤叶片数<20片。结论:阳春砂种苗质量分级标准适用于该药材的规范化生产。

Objective:To establish the seedlings quality grading standard of Amomum villosum Lour.,and provide guidance for seedlings standardization production of A.villosum.Methods:Seedlings of A.villosum including seed seedlings and ramet seedlings,which were collected from the main production area of China,the main quality indicators including plant height,leaf number,tiller number,spheroid stem diameter and stolon stem diameter were observed,and principal component and K-mean clustering method were used to analyze the data and establish the seedling quality grading standard.Results:The seedlings of A.villosum were divided into 2 grades,the seed seedlings with plant height≥40 cm,tiller number≥3 class were divided into the I grade,the seed seedlings with plant height of 15-40 cm,tiller number of 1-3 were divided into theⅡgrade.The ramet seedlings with plant height of 60-110 cm,leaf number of 5-10 were divided into the I grade,the ramet seedlings with plant height of 110-180 cm,leaf number of 10-20 were divided into theⅡgrade.Conclusion:The seedlings quality grading standard of A.villosum are suitable for its normalized production.