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山西省DB14/T 2432—2022《硬茬地玉米施肥沟播作业技术规程》解读

2023-01-09 08:40:58 来源:农机网整理发布 阅读量:27661 评论

导读:该标准由山西省农业农村厅提出并监督实施,由山西省农业标准化技术委员会归口,由山西农业大学起草。该标准规定了硬茬地玉米施肥沟播作业的术语和定义、基本要求、作业准备、作业流程、作业管理、生产档案。

  【农机网 政策与标准】山西省DB14/T 2432—2022《硬茬地玉米施肥沟播作业技术规程》该地方标准于2022年3月7日由山西省市场监督管理局批准发布,自2022年6月8日起实施。
 
  该标准由山西省农业农村厅提出并监督实施,由山西省农业标准化技术委员会归口,由山西农业大学起草。该标准规定了硬茬地玉米施肥沟播作业的术语和定义、基本要求、作业准备、作业流程、作业管理、生产档案。适用春播玉米施肥和播种管理。
 


       机械检查与调整——
 
  机具检查:使用前必须向变速箱加足润滑油至检油孔高度位置,所有黄油嘴应注足黄油,检查并拧紧全部连接螺栓,各传动部分转动灵活。
 
  机具调整:在较平的地面将机具降低至旋耕刀尖贴近地面,观看左右两端刀尖离地高度和左右两端开沟器离地高度是否一致,若不一致,适当调整拖拉机提升拉杆长度,使左右刀尖和开沟器离地高度一致,以保证   旋耕深度一致,各行播种深度一致。在机具左右水平调整的基础上,调节镇压辊的前后孔位,高度对应   一致,使机具保持前后水平状态。
 
  试运行:机具与拖拉机连接调整后,将其升离地面,离地高度≥20cm,检查各运转部件是否转动灵活,确定 无异常后,再结合动力,转速由低到高,使机具转速达到最高,运作 20~30 分钟后,停车检查确认一切正常,方可投入作业。
 
  肥料施用:施肥目标、原理、原则和依据符合NY/T 496。按照耕地地力等级与玉米目标产量水平,每666.7m2施用相当于纯N 9 kg~15 kg、P2O5  6 kg~9 kg、K2O 0 kg~5 kg,其中缓释性氮肥占氮肥总量的25%。缓释性氮素肥料可选择树脂包衣尿素或硫包衣尿素等,树脂包衣尿素质量符合HG/T 3931规定、硫包衣尿素质量符合GB/T 29401规定。春玉米耕层土壤有效锌、有效锰和有效硼的临界指标分别为0.7 mg/kg、7.0 mg/kg和0.5 mg/kg,微肥做到因缺补缺、合理施用。肥料选择颗粒均匀,大小相同,含水率低于12%,避免使用吸水结块肥。
 
  玉米品种选择及种植密度:玉米种子发芽率≥95%以上,其他指标符合GB 4404.1—2008中4.2.2部分的规定。选择符合GB/T 15671 规定并含有克百威、戊唑醇或烯唑醇等成分的种衣剂进行了包衣的种子。
 
  根据玉米品种特性和耕地地力等级等确定种植密度。耐密性品种4200~4600株/666.7 m2,半耐密性品种3600株~4000株/666.7 m2。
 
  作业流程——
 
  播种期:当地表以下5 cm处地温稳定通过10℃,可进行施肥播种作业。
 
  施肥旋耕沟播镇压作业要求如下:
 
  a)将肥料与种子分别放入肥料槽和种箱内,然后将机械低速驶入大田。 b)机械行进过程中观察肥料撒布是否均匀,下料管是否通畅。
 
  c)旋耕作业深度为≥8 cm,无漏耕,作业质量指标符合NY/T 499规定。
 
  d)播种开沟器深度调节到低于旋耕作业面5 cm处。玉米播种器为精量可调式,可根据品种特性和地力条件调节播种密度,玉米播种行距为50 cm,播深为4 cm~5 cm,作业质量符合NY/T 503规定。
 
  e)作业行进速度为二档,且匀速前进,中途不能停车,以免造成种子断条,田头留有一个播幅宽度作最后播种,检修调整在地头进行。
 
  点击下方下载完整标准文件。
 
  注:本文由农机网(www.nongjx.com)整理发布,资料来源:地方标准信息公共服务平台。
 
相关资料下载:

DB14T2432—2022FDIS.pdf

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