DB43-T 2237-2021 油茶嫁接苗与实生苗形态鉴别及检测

ICS

65.020.40CCS

B

43湖 南 省 地 方 标 准DB43/T

2237—2021油茶嫁接苗与实生苗形态鉴别及检测Morphological

identification

and

quality

detection

forgrafted

sapling

and

seedling

of

Camellia

oleifera2021

-

12

-

07

发布

2022

-

-

实施湖南省市场监督管理局

发

布DB43/T

— 前言························································································································

Ⅲ1

·····················································································································

12

规范性引用文件······································································································13

术语和定义············································································································14

鉴别程序···············································································································15

鉴别方法···············································································································26

质量检测···············································································································37

质量判定···············································································································38

档案管理···············································································································4DB43/T

2237— 本文件按照

GB/T

—2020《标准化工作导则 第

1

部分：标准化文件的结构和起草规则》的规定起草。请注意本文件的某些内容可能涉及专利。本文件的发布机构不承担识别专利的责任。本文件由湖南省林业局提出。本文件由湖南省林业标准化技术委员会归口。中心、湖南省林业种苗中心、汨罗市桃林林场。军、黄水清。IIIDB43/T

2237—1

理等要求。本文件适用于

1～2

年生油茶嫁接苗与实生苗在生产、出圃和销售环节的形态鉴别及

2

年生以上苗木质量检测。2

规范性引用文件文件。GB

6000 主要造林树种苗木质量分级GB/T

26907 油茶苗木质量分级LY/T

1000 容器育苗技术LY/T

2289 林木种苗生产经营档案LY/T

2418 苗木抽样方法3

术语和定义下列术语和定义适用于本文件。3.1芽苗砧嫁接 nurse

grafting以种子催芽后形成的胚芽（或根）作砧木，以当年生新梢作接穗的一种劈接嫁接方法。3.2嫁接苗

sapling使用优良无性系穗条为接穗，采用嫁接方法繁育的苗木。3.3实生苗 由种子萌发培育的苗木，也包括嫁接后从砧木萌芽生长形成的苗木。3.4一批苗木 a

lot

同一树种（或品种）在同一苗圃，用同一批繁殖材料，采用基本相同的育苗技术培育的同龄苗木。4

鉴别程序4.1 苗木取样DB43/T

2237—4.1.1 取样时间苗木嫁接成活后生长

2

个月以上至出圃前，以秋冬季最佳。4.1.2 取样方法与数量GB

6000

抽样”执行；如为指导苗木生产和保证出圃苗木纯度，则应全面调查并清除苗圃地实生苗。4.2 苗木鉴别5

鉴别方法”执行。5

鉴别方法5.1 初步鉴别叶色、嫩梢等与其它大部分嫁接苗有明显区别的苗木，将其单独区分进行苗株鉴别。5.2 苗株鉴别5.2.1 生长特征5.2.1.1 苗高高度可作为判断嫁接苗与实生苗的第一特征。在圃地里

1～2

年生同一批苗木中，实生苗高生长比嫁接苗快，大多数实生苗苗高比同批次嫁接苗高出约

15％～％，两者有明显的差异。5.2.1.2 苗干红色，无明显嫁接口。5.2.1.3 生长方向嫁接苗在幼苗期向偏斜方向生长，1

年生苗表现最明显；实生苗直立生长。5.2.2 叶片特征5.2.2.1 叶形齿不规则。5.2.2.2 叶色色。DB43/T

2237—5.2.3 芽特征紫色，腋芽瘦小。6

质量检测6.1 抽样

LY/T2418

4

和

GB

6000

抽样”执行。6.2 检测6.2.1 检测规则地径、苗高、主根长度、大于

5

cmⅠ级侧根数，容器苗应观察综合指标并测定地径、苗高。6.2.2 指标与方法6.2.2.1 综合指标

5

容器苗还应根系发达，容器不破碎并形成良好根团。6.2.2.2 地径用游标卡尺测量，如测量部位出现膨大，则测量其上部苗干起始正常处，读数精确至

0.05

cm。6.2.2.3 苗高用钢卷尺测量，自地径沿苗干至顶芽基部，读数精确至

1

cm。6.2.2.4 主根长度用钢卷尺测量，自地径沿主根至根底端，读数精确至

1

。6.2.2.5 大于

5

cmⅠ级侧根数目测观察，直接从主根长出的大于

5

cmⅠ级侧根，计数。7

质量判定7.1 质量要求油茶嫁接苗均应

2

1

合格苗不分级，质量要求按表

2

执行。/cm/cm/cm/cm/cm

/cm

cm

400.4015250.301080无检疫对象病虫600.6020450.451575/cm/cm

300.30主根发达，侧根团完整，主80

500.5075DB43/T

2237—表

1 油茶合格裸根