DB2302/T 009-2021 极早熟玉米制种技术规程

ICS65.02.20

B21

DB2302

黑龙江齐齐哈尔市地方标准

DB2302/T008—2021

极早熟玉米覆膜制种技术规程

2021-12-26发布2022-01-26实施

齐齐哈尔市市场监督管理局发布

DB2302/T008—2021

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

3.1极早熟玉米....................................................................1

3.2亲本种子......................................................................1

3.3苗期..........................................................................1

3.4拔节期........................................................................1

3.5大喇叭口期....................................................................1

3.6抽雄期........................................................................1

3.7抽丝期........................................................................2

3.8灌浆期........................................................................2

4产地要求..........................................................................2

4.1产地热量条件..................................................................2

4.2产地隔离条件..................................................................2

4.2.1空间隔离..................................................................2

4.2.2屏障隔离..................................................................2

5栽培管理..........................................................................2

5.1整地..........................................................................2

5.1.1选地......................................................................2

5.1.2秋整地....................................................................2

5.2种子处理......................................................................2

5.2.1精选与晾晒................................................................2

5.2.2种衣剂拌种................................................................2

5.2.3发芽率测定................................................................3

5.3施肥..........................................................................3

5.3.1种肥......................................................................3

5.3.2叶面追肥..................................................................3

5.4播种..........................................................................3

5.4.1亲本种植比例..............................................................3

5.4.2播期......................................................................3

5.4.3错期......................................................................3

5.4.4播种密度..................................................................3

5.4.5覆膜播种..................................................................3

5.5破膜放苗......................................................................3

I

DB2302/T008—2021

5.6病虫草害防治..................................................................3

5.6.1