ICS 65.020.20 B 05 备案号： 湖 DB42 北 省 地 方 标 准 DB 42/ T 931—2013 砂梨生产技术规程 Regulations of cultivation practice for sand pear (Pyrus pyrifolia Nakai) （报批稿） （本稿完成日期：2013 年 10 月 18 日） 2013 - 12 - 20 发布 湖北省质量技术监督局 2014 - 05 - 20 实施 发 布 DB42/ T931—2013 目  次 前言..................................................................................................................................................................... III 1 范围................................................................................................................................................................. 1 2 规范性引用文件.............................................................................................................................................1 3 定义................................................................................................................................................................. 1 3.1 3.2 3.3 3.4 3.5 4 园地选择与规划.............................................................................................................................................2 4.1 4.2 4.3 5 园地选择..................................................................................................................................................2 园地规划..................................................................................................................................................2 其它.......................................................................................................................................................... 2 砧木及苗木质量.............................................................................................................................................2 5.1 5.2 6 植保产品 plant protection product................................................................................................. 1 有害生物综合管理 integrated pest management.......................................................................... 1 农药安全间隔期 pesticide safety interval..................................................................................... 1 经济阈值 the economic threshold.................................................................................................. 1 商品肥料 commercial fertilizer.........................................................................................................1 砧木.......................................................................................................................................................... 2 苗木质量..................................................................................................................................................2 树体管理......................................................................................................................................................... 2 6.1 花果管理..................................................................................................................................................2 6.1.1 人工辅助授粉...................................................................................................................................2 6.1.2 合理负载...........................................................................................................................................2 6.1.3 果实套袋...........................................................................................................................................2 6.2 树形.......................................................................................................................................................... 3 6.2.1 原则................................................................................................................................................... 3 6.2.2 主要树形...........................................................................................................................................3 6.3 修剪管理..................................................................................................................................................3 6.3.1 原则................................................................................................................................................... 3 6.3.2 休眠期修剪.......................................................................................................................................3 6.3.3 生长期修剪..............................................................................................................