枳壳种苗质量分级标准研究

收集重庆、四川、湖南、江西等枳壳主产地43份一年生枳壳嫁接苗,测定株高、砧木粗、地径、根长、根粗、侧根数、根幅、分枝数、分枝长、绿叶数、叶长、叶宽、是否有刺等指标。通过SPSS 19.0软件进行K-均值聚类法分析获得分级标准,结合生产实际,将株高、地径、分枝数作为枳壳种苗(一年生嫁接苗)质量分级指标。制定3个等级分级标准,一级苗:株高不小于80 cm,地径不小于9.0 mm,分枝数不少于5枝;二级苗:株高60~80 cm,地径8.0~9.0 mm,分枝数3~5枝;三级苗:株高不小于40 cm,地径不小于6.0 mm,分枝数不少于1枝。不满足三级标准则为不符合规定苗,不能作为种苗使用,生产上建议使用一、二级苗。

Quality grading standard of Citrus aurantium seedlings

Forty-three annual Citrus aurantium grafted seedlings from Chongqing,Sichuan,Hunan,Jiangxi and other main producing areas were collected,and the plant height,rootstock diameter,scion diameter,root length,root diameter,lateral root number,root breadth,branch number,branch length,green leaf number,leaf length,leaf width,thorns and other indicators were measured.Through the K-cluster analysis of SPSS 19.0 software,the classification standards were obtained.Combined with the production practice,plant height,scion diameter and branch number were taken as the quality classification indexes of C.aurantium seedlings(annual grafted seedlings),and three classification standards were established.If it does not meet the three-level standard,it is unqualified seedling and cannot be used as seedling.It is suggested to use the first and second level seedlings in production.