【摘要】 为给山豆根种苗的分级与质量判断提供参考,在对山豆根1年生种苗的农艺性状及其相关性进行比较研究的基础上,采用标准差法对山豆根种苗进行分级。结果表明:苗高、茎粗及叶数是山豆根种苗分级的主要指标。山豆根种苗可分成3个等级,1级苗:苗高≥18cm,地径≥2.7mm,叶数≥9片;2级苗:14cm≤苗高<18cm,2.3mm≤地径<2.7mm,7片≤叶数<9片;3级苗:10cm≤苗高<14cm,1.9mm≤地径<2.3mm,5片≤叶数<7片。更多还原

【Abstract】 In order to provide references for classification and quality judgment of S.tonkinensis seedlings,main agronomic traits of the 1-year-old seedlings and correlation among them were explored and seedlings were classified by using standard deviation method.Results:Height of seedling and ground diameter and number of leaf were the main classification indexes of S.tonkinensis seedlings,the seedlings were classified into three grades.Standard of 1st grade seedlings:seedling height≥18cm,ground diameter≥2.7 mm,number of leaves≥9;standard of 2nd grade seedlings:seedling height 14~18cm,ground diameter 2.3~2.7 mm,number of leaves 7~9;standard of 3rd grade seedlings:seedling height 10~14cm,ground diameter 1.9~2.3mm and number of leaves 5~7.更多还原