DB43/T 2302-2022 核桃优树选择技术规程

ICS65.020

CCSB61

43

湖南省地方标准

DB43/T2302—2022

核桃优树选择技术规程

Codeofpracticeforplustreeselectionofwalnut

2022-03-02发布2022-05-02实施

湖南省市场监督管理局发布

DB43/T2302—2022

目次

前言························································································································Ⅲ

1范围·····················································································································1

2规范性引用文件······································································································1

3术语和定义············································································································1

4优树选择指标·········································································································1

5选优程序···············································································································2

6育苗·····················································································································2

7无性系测定············································································································3

8档案建立···············································································································3

附录A（规范性）核桃优树初选信息表··········································································4

附录B（规范性）核桃果实特性表················································································5

附录C（规范性）核桃优树综合评分表··········································································6

I

DB43/T2302—2022

II

DB43/T2302—2022

前言

本文件按照GB/T1.1—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委员会归口。

本文件起草单位：湖南省植物园。

本文件主要起草人：李建挥、李柏海、禹霖、柏文富、吴思政、严佳文、聂东伶、熊颖。

III

DB43/T2302—2022

IV

DB43/T2302—2022

核桃优树选择技术规程

1范围

本文件规定了胡桃科胡桃属干果树种核桃的优树选择指标、选优程序、育苗以及无性系测定等技术

要求与档案管理要求。

本文件适用于核桃优树选择。

2规范性引用文件

下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文件，仅

该日期对应的版本适用于本文件；不注日期的引用文件，其最新版本（包括所有的修改单）适用于本文件。

GB/T5009.5食品中蛋白质的测定

GB/T5009.6食品中脂肪的测定

GB/T20398核桃坚果质量等级

GB/T26909植物新品种特异性、一致性、稳定性测试指南核桃属

LY/T2289林木种苗生产经营档案

LY/T2290林木种苗标签

LY/T3004.2核桃第2部分：核桃良种选育标准

LY/T3004.3核桃第3部分：核桃嫁接苗培育和分级标准

LY/T3004.4核桃第4部分：核桃优质丰产栽培技术规程

LY/T3004.5核桃第5部分：核桃改劣换优技术规程

3术语和定义

下列术语和定义适用于本文件。

3.1

优树plustree

在相近的立地条件下，丰产性能、抗逆性、坚果品质等性状上显著优于其他单株，或具有特殊优良

性状，经过评选确认具有良好表型的单株。

3.2

单位冠幅面积产量perunitecrownareayield

每平方米树冠垂直投影面积坚果自然风干后的产量。

4优树选择指标

4.1生长性状

树龄15年以上，树体开张或半开张，冠幅≥40m2，树势健壮，生长良好。

1

DB43/T2302—2022

4.2抗逆性

核桃炭疽病、黑斑病、举肢蛾、木蠹蛾、小吉丁虫、天牛等常见有害生物危害较轻，危害程度明显

低于周边单株，且叶片和枝梢受害率＜30％，果实受害率＜15％。

4.3经济性状

4.3.1单位冠幅面积产量

连续3年单位冠幅面积产量，年均≥0.25kg/m2，最低年份≥0.20kg/m2；

4.3.2坚果性状