DB43-T 2238-2021 杨树大径级用材林培育技术规程

ICS

65.020.40CCS

B

43湖 南 省 地 方 标 准DB43/T

2238—2021杨树大径级用材林培育技术规程Regulations

of

large-size

timber

cultivation

for

poplar

plantations2021

-

12

-

07

发布

2022

-

-

实施湖南省市场监督管理局

发

布DB43/T

2238— 前言························································································································

Ⅲ1 ·····················································································································

12规范性引用文件······································································································13 术语和定义············································································································14 主要经营指标·········································································································15造林地选择············································································································26 ·····················································································································

27 林分抚育···············································································································38 病虫害防治············································································································49 ·····················································································································

410档案管理··············································································································4DB43/T

2238— 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。本文件起草单位：中南林业科技大学、湖南茂源林业有限责任公司。本文件主要起草人：徐刚标、宋国宝、唐洁、姜小龙、梁艳、李河、龚细娟、翁文源。III林分年平均蓄积生长量应达到

m

以上。DB43/T林分年平均蓄积生长量应达到

m

以上。1

害防治、主伐、档案管理等内容。本文件适用于湖南省杨树大径级用材林培育。2

规范性引用文件文件。GB

6001 育苗技术规程GB/T

15776 造林技术规程LY/T

1195 杨树速生丰产用材林主要栽培品种苗木LY/T

1495 杨树人工速生丰产用材林LY/T

1895 杨树速生丰产用材林定向培育技术规程3

术语和定义本文件没有界定的术语和定义。4

主要经营指标4.1 面积集中连片，林分面积不少于

1.0

ha。单一无性系的林分面积，不超过

20.0

。4.2 保存率按

LY/T

1495

执行。4.3 生长量34.4 干形树干圆满、通直、无节疤。DB43/T

2238—5

造林地选择5.1 立地条件5.1.1 渠路旁和村庄附近等地块。5.1.2 质地为沙壤、轻壤、壤土，容重

g/ml

以下；肥力较高，全氮和有机质含量应分别在

0.1％和0.8％以上；有效层厚度

m

以上；常年平均地下水位在

1.5

m～2.0

m

5.1.3 18

以上。5.1.4 水淹程度季节性水淹的滩地，洪水期林木水淹深度

2

m

以下，水淹时间不超过

d。6

6.1 无性系()选择6.2 苗木6.2.1 苗木培育苗木繁殖、管理及育苗技术，按

GB

6001

执行。6.2.2 苗木分级按

LY/T

1195

执行。6.2.3苗木规格宜选用

I

级苗。6.2.4 苗木处理造林前，修剪苗干上侧枝，将打捆的苗干基部放入水中浸泡

2

d～7

d。苗干基部的浸水深度，宜达到苗干高度的一半。6.3 无性系配置以主栽无性系为主，宜采用多个无性系块状配置造林。6.4 整地

cm～40

cm

50m～依据立地条件，造林密度为

200

株／ha～330

株／依据立地条件，造林密度为

200

株／ha～330

株／，单株营养面积不低于

m

。宽—窄行配置，80

m，开挖

1

1.2

m、底宽

m

1.5

m向开沟筑垄，一沟一垄，垄高

m～

m。6.5 造林密度2株距为

4

m～6

m

4

m～6

m，宽行距为

m～30

m。6.6 定植点配置方向一致。6.7 造林时间12

月至翌年

3

月。6.8 插干造林用钢钎打孔，孔的直径为

4

cm～5

cm，孔深为

80

cm～100

cm。插入苗干前，孔中灌入适量的水或泥浆。插入苗干直至孔底，回填松土，四周锤实，培土成馒头状。6.9 补植造林后冬季进行补植，保证造林成活率达

95％以上。7

林分抚育7.1 中耕除草4 8

2

1

月～5

2

月～10

5

4 810

cm。农林间作林分，以耕代抚。7.2 间作持

1

m

左右距离。7.3 整形修枝7.3.1 修枝时间，秋冬落叶休眠时期；除萌时间，4

月中下旬至

5

月上中旬。7.3.2 2a～

2∶3

干

2

m

以下的萌条。～

1∶3

7.3.3 应贴近树干，修剪口平滑，不撕裂树皮，不留树茬。修枝后，及时清除枝条。DB43/T

2238—7.4 施肥造林后，2a～7a，每年

5

月中旬沿树冠滴水线挖施肥沟（宽为

30

～

cm，深为

20

～

cm），

～0.4

或复合肥磷酸氨（34-17-0）

～