DB14/T 2421-2022 抗旱性玉米杂交种选择规范

ICS65.020.20

CCSB21

14

山西省地方标准

DB14/T2421—2022

抗旱性玉米杂交种选择规范

2022-03-07发布2022-06-08实施

山西省市场监督管理局  发布

DB14/T2421—2022

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

反复干旱存活率.......................................................................................................................................1

抗旱指数...................................................................................................................................................1

抗旱性分级...............................................................................................................................................1

4环境要求...........................................................................................................................................................1

5种子...................................................................................................................................................................2

选种...........................................................................................................................................................2

种子处理...................................................................................................................................................2

6不同生育期抗旱性评价...................................................................................................................................2

萌发期.......................................................................................................................................................2

苗期...........................................................................................................................................................3

开花期.......................................................................................................................................................3

全生育期...................................................................................................................................................4

7抗旱等级划分...................................................................................................................................................5

8抗旱性杂交种选择...........................................................................................................................................5

选择原则...................................................................................................................................................5

选择方法...................................................................................................................................................5

结果判定...................................................................................................................................................5

9档案记录...........................................................................................................................................................5

附录A（资料性）抗旱性等级划分.....................................................................................