DB37/T 4366-2021 冬小麦苗情等级划分标准

ICS65.020.20

CCSB05

37

山东省地方标准

DB37/T4366—2021

冬小麦苗情等级划分标准

TheclassificationstandardofwinterwheatseedlingconditioninShandongProvince

2021-03-11发布2021-04-11实施

山东省市场监督管理局发布

DB37/T4366—2021

目次

前言.................................................................................II

1范围...............................................................................1

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

3术语和定义.........................................................................1

4调查方法...........................................................................1

4.1单株茎蘖数.....................................................................1

4.2总茎蘖数.......................................................................2

4.3单株次生根数...................................................................2

4.4主茎叶龄数.....................................................................2

5苗情分类...........................................................................2

5.1一类苗.........................................................................2

5.1.1冬前期.....................................................................2

5.1.2返青期.....................................................................2

5.1.3起身期.....................................................................2

5.2二类苗.........................................................................2

5.2.1冬前期.....................................................................2

5.2.2返青期.....................................................................2

5.2.3起身期.....................................................................2

5.3三类苗.........................................................................3

5.3.1冬前期.....................................................................3

5.3.2返青期.....................................................................3

5.3.3起身期.....................................................................3

5.4旺苗...........................................................................3

5.4.1晚播型旺苗...............................................................