稻田土壤肥力等级划分和培肥技术规程 Regulation of classification of paddy soil fertility and fertilizer technology 发 布 湖南省市场监督管理局2021-07发布-02 2021-09实施-0243 DB43/T2087—2021 湖南省地方标准 ICS CCS 67.080.20 B 31 DB43/T 2087—2021 I 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 水稻生产区域划分 ································ ································ ····························· 1 3.2 土壤肥力 ································ ································ ································ ········· 1 3.3 稻田土壤综合肥力指数 ································ ································ ······················· 1 3.4 水稻产量比 ································ ································ ································ ······ 1 3.5 稻田土壤肥力等级 ································ ································ ····························· 1 3.6 土壤还原性物质总量 ································ ································ ·························· 1 3.7 耕层厚度 ································ ································ ································ ········· 2 4 稻田土壤肥力等级划分 ································ ································ ····························· 2 4.1 土壤采样 ································ ································ ································ ········· 2 4.2 土壤测试 ································ ································ ································ ········· 2 4.3 稻田土壤综合肥力指数计算 ································ ································ ················· 2 4.4 水稻产量比计算 ································ ································ ································ 2 4.5 稻田土壤肥力等级划分 ································ ································ ······················· 2 5 稻田土壤培肥技术 ································ ································ ································ ··· 3 附录A（规范性） 湖南省水稻生产区域分类 ································ ································ ···· 4 附录B（规范性） 土壤综合肥力指数计算 ································ ································ ······· 5 附录C（规范性） 推荐施肥 ································ ································ ························· 7 附录D（资料性） 土壤还原性物质总量的测定 ································ ································ · 8 DB43/T 2087—2021 II DB43/T 2087—2021 III 前 言 本文件按照 GB/T 1.1 —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。 本文件由湖南省农业农村厅提出。 本文件由湖南省农业标准化技术委员会归口。 本文件主要起草单位：湖南省土壤肥料研究所 、中国农业科学院农业资源与农业区划研究所。 本文件主要起草人：孙耿、孙梅、龙泽东、罗尊长、张会民、黄晶、刘杰、石丽红、李冬初。 本文件为首次发布。 DB43/T 2087—2021 IV DB43/T 2087—2021 1 稻田土壤肥力等级划分和培肥技术规程 1 范围 本文件规定了稻田土壤肥力等级划分和培肥技术的术语、定义及要求。 本文件适用于湖南省水稻种植区域。 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。 DB43/T 108 中低产田土类型划分和质量改造要求 NY/T 889 土壤速效钾和缓效钾含量的测定 NY/T 1121 土壤检测 Y/T 1229 森林土壤水解性氮的测定 3 术语和定义 下列术语和定义适用于本文本。 3.1 水稻生产区域划分 根据水稻品种对生态条件有相对一致的适应性、自然条件和社会经济条件的基本相似性、水稻生产 特点及其发展方向的相似性等原则划分，分四个区域，即洞庭湖平原区、湘中湘东丘陵区、湘南丘陵山 区和湘西山区。各区域所辖县市区见附录 A。 3.2 土壤肥力 土壤为植物 生长供应和协调养分、水分、空气和热量的能力，是土壤物理、化学和生物学性质的综 合反应。 3.3 稻田土壤综合肥力指数 采用模糊数学方法，对稻田土壤肥力指标的权重进行加权求和所得到的综合指数。 3.4 水稻产量比 指正常年份水稻籽粒产量与该品种在区试中最高产量的比值，以 ％表示。 3.5 稻田土壤肥力等级 基于土壤综合肥力指数与水稻产量比的综合评估，对稻田土壤肥力进行分等定级。 3.6 土壤还原性物质总量 DB43/T 2087—2021 2 稻田土壤中易失去外层电子的物质的总和，测定方法详见附录 D。 3.7 耕层厚度 稻田犁底层以上 的垂直厚度为耕层厚度。 4 稻田土壤肥力等级划分 4.1 土壤采样 按NY/T 1121 规定的方法执行。 4.2 土壤测试