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关于印发《重庆市丘陵山区宜机化地块 整理整治技术规范要点释义》的通知

2019-01-03 08:54:11 来源:重庆市农业农村委员会办公室 阅读量:21675 评论

导读:为规范、推进土地宜机化整治工作,现将《重庆市丘陵山区宜机化地块整理整治技术规范要点释义》印发给你们,请严格按有关技术要求组织实施。

  【中国农机网 通知公告渝农办发〔2018〕248号
 
  有关区县(自治县)农机主管部门:
 
  为规范、推进土地宜机化整治工作,现将《重庆市丘陵山区宜机化地块整理整治技术规范要点释义》印发给你们,请严格按有关技术要求组织实施。
 
  重庆市农业农村委员会办公室
 
  2018年12月29日
 
  重庆市丘陵山区宜机化地块整理整治
 
  技术规范要点释义
 
  为切实做好丘陵山区土地宜机化整治工作,促进农业供给侧结构性改革,助力乡村振兴战略实施,根据重庆市《丘陵山区宜机化地块整理整治技术规范》(DB 50/T 795-2017),编写本要点释义。
 
  一、适用范围及释义内容
 
  本要点释义适用于重庆市丘陵山区土地宜机化整治,对土地宜机化整治的基本原则、建设内容、技术参数、建设流程、建设机制等进行浅显释义。
 
  二、概念及成果分类
 
  (一)概念
 
  宜机地块:适宜乘坐式或者中大型农业机械开展耕作、种植、田间管理、收获和运输等作业的耕地。
 
  宜机化整治:就是以国家《高标准农田建设通则》为指导,以重庆市《丘陵山区宜机化地块整理整治技术规范》为标准,综合运用工程机械、农业机械、有机质提升等工程和生物措施,对现状土地进行连通地块、并小为大、调整布局、培肥土壤等有利于机械化生产作业的持续改造过程。
 
  (二)建设成果分类
 
  1. 地块互联互通:在单块耕作条件较好的地块与地块之间、地块与路网之间实现相互联通。
 
  2. 水平条田:在地形相对平坦的地区,建设相同标高的条带状水田。
 
  3. 水平梯田:在地面坡度相对较大地区,依据地形建设的相同标高的阶梯式水田。
 
  4. 缓坡旱地:在5°以下平缓地区,依据坡向建设的条带状缓坡土地。
 
  5. 梯台旱地:在5°以上的陡峭地区,依据地形建设的阶梯状水平或斜线土地。
 
  三、基本原则
 
  1. 科学选址,集中连片。选择道路通达、土层深厚、集中连片、排灌良好,坡度25°以下的地区;项目区干部、群众和业主积极性高的优先。
 
  2. 资源循环,绿色轻简。充分尊重自然规律,坚持资源循环和绿色低碳理念,通过机械化秸秆还田、畜禽粪污消纳、绿肥种植等方式培肥土壤;土地整治过程中,因地制宜合理利用客观条件,尽量做到依山就势,尽可能就地就近作业,小程度挖填和小半径转运。
 
  3. 错位互补,传承既往。既重视农田建设的沟凼路等田边工程,又重视宜机化地块整治的田间工程;对各个历史时期农田建设的可用成果充分利用和保留。
 
  4. 秩序渐进,持之以恒。坚持以点串线,以线扩面;示范带动,持续开展。
 
  5. 先建后补,差额撬动。注重资金使用的经济效益和时间效率,采取先建后补、差额包干、谁用谁建、担保贴息等竞争撬动措施,突出资金放大效果。
 
  四、建设内容
 
  1. 连通地块。通过消坎、填沟、搭接等方式,完善田间耕作道,连通地块,实现地块与耕作道、耕作道与外部路网互联互通,满足农业机械作业和进出通行需要。耕作道以土质为主,做到通道与耕地灵活转换。
 
  2. 消除死角。对半岛、交错等影响农业机械作业的异形地块,采用截弯取直和上下左右归并方式整治,实现地块顺直。
 
  3. 并小为大。对走向相同、高差相近的地块进行并整,实现小变大、零变整。
 
  4. 优化布局。遵循条带状布局原则,改变短蹙状布局,尽量延伸农机作业线路,以利连续作业。
 
  5. 贯通沟渠。根据规划设计的汇水走向,合理设置主沟、背沟、围沟。深开主沟、背沟和围沟,在汇水面的制高线处开挖截洪沟,少开厢沟支沟,做到沟渠河互联互通;沟的类型以明沟为主,在农机跨越处适当设暗沟(渗滤管);沟的材质断面以土质为主,局部硬质化;沟的功能以排为主,局部排灌兼用。
 
  6. 培肥土壤。土地整治成形后,通过深松、旋耕等农业机械化措施,均匀搅拌生熟土,配套机械化绿肥种植、秸秆还田、粪肥还田提升土壤有机质。
 
  五、技术参数
 
  1. 地块长宽:土块平均长应≥50m,宽能满足农机通行和折返;
 
  2. 单块旱地纵向坡度≤10%,横向坡度≤3%;
 
  3. 大挖填深度≤1.5m;
 
  4. 砾石埋置深度≥50cm;
 
  5. 进出地块梯道坡度≤25°;
 
  6. 耕作道转弯半径≥5m;
 
  7. 耕作道宽度:2-3m;
 
  8. 主沟、背沟、围沟深度≥50cm;
 
  9. 主沟厢间距:10-20m;
 
  10. 整治后土层平均厚度≥整治前土层平均厚度;
 
  11. 背坎边坡坡度:1:0.3-1:0.7。
 
  六、建设流程
 
  1. 地形测绘。测绘1:500-1:2000地形图或正摄影像图。
 
  2. 规划设计。对项目区地形地貌进行深度分析,图上图下反复比对,方案充分酝酿。形成项目整治的总体布局、分区规划、地块设计文本,规划设计图图标、图例、表格要清晰完备,其中地块设计要进行长、宽、高(坡向)的三维表达。
 
  3. 现场放线。可在地形图找参照点手工放线,也可根据坐标值用仪器放线。
 
  4. 工程施工。按照规划设计和现场修正方案组织施工。在机型选用上遵循工程机械、农业机械、大中小型机械配套组合的原则,土石方以工程机械为主,耕整地以农业机械为主,主作业面以中大机械为主,辅作业面以小微机械为主。作业顺序上是否依次或交叉作业,综合考虑天气、工序、机手等因素确定。在生熟土处理上是否生熟分离或生熟混合作业,以不影响地力为原则,土层浅、挠动大的分层作业,土层深、挠动小的混合作业。
 
  5. 资料整理。将项目申报、立项批复(备案)、设计、施工、质检、竣工等图纸、文字、表格、影像资料进行整理归档。
 
  6. 竣工验收。项目竣工后,按照规定报请主管部门进行竣工验收。
 
  七、建设机制
 
  宜机化整治属技术难度不大,土石方量不易计算的简易工程,符合农业放管服要求,应坚持先建后补、差额包干、谁用谁建的灵活机制,根据业主资本性质,可以招投标,也可以不招投标。
 
  重庆市农业农村委员会办公室 2018年12月29日印发
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