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山西省DB14/T2184-2020《玉米机械探墒播种技术规程》解读

2023-08-09 13:24:01 来源:农机网整理发布 阅读量:32271 评论

导读:该标准规定了玉米机械探墒播种的术语和定义、土壤条件、播前准备、播种、播后苗前封闭除草、苗期管理、生产档案。适用于山西省中晚熟区玉米播种保苗环节。

  【农机网 政策与标准】2020年9月25日,山西省市场监督管理局批准发布山西省DB14/T2184-2020《玉米机械探墒播种技术规程》,该地方标准自2020年11月25日起实施。
 
  该标准由山西省农业农村厅提出并监督实施,由山西农业标准化技术委员会归口,由山西农业大学起草。规定了玉米机械探墒播种的术语和定义、土壤条件、播前准备、播种、播后苗前封闭除草、苗期管理、生产档案。适用于山西省中晚熟区玉米播种保苗环节。
 
  播前准备——
 
  机具选择:动力机械选用50马力以上拖拉机播种机用2MFT-4型或2MFT-5型玉米精密探墒播种机。
 
  机具使用与调节方法——
 
  具体为:
 
  a) 对使用的拖拉机进行用前技术检查,使用的拖拉机技术状态良好,动力输出运转正常;
 
  b) 查看作业地形,改善作业环境,排除田间的障碍物,防止其影响作业质量和效率及损坏机具;
 
  c)对作业机手进行技术培训,熟练掌握工作原理、调整方法和一般故障排除等技术。
 
  品种选择:选取适应性较强、抗逆性良好、生育期适中、耐密植的玉米抗旱杂交品种。种子质量应符合GB 4404.1 的规定。
 
  施肥:使用氮磷钾肥( N-P O -K O ) 配方为26-13-6 的控释肥。产量水平达到600 kg/666.7m2 ~ 700 kg/666.7m2,宜使用肥料40 kg/666.7m2~45 kg/666.7m2;产量水平700 kg/666.7m2以上,推荐用量45 kg/666.7m2~55 kg/666.7m2。侧深施肥,施肥沟在播种沟外侧7 cm~10 cm,深10cm。控释肥随播种一次施入。
 
  播种——
 
  机具准备:检查连结配套播种机具,在农田进行试运转,作业前先加装种子和化肥,种子数量不能超过播种滚   筒容积的1/3,确保运行可靠。
 
  探墒播种:采用玉米探墒精密播种机,根据墒情调整豁土深度。当发生轻度春旱,即表层0 cm~5 cm土壤田间持水量为55 %~60 %时,调节豁土深度为3 cm~5 cm;当发生中度春旱,即表层0 cm~5 cm土壤田间持水量50 %~55 %时,调节豁土深度为5 cm~8 cm;最大豁土深度不超过8 cm。机手和辅助人员要及时检查和观察作业质量与机器的工作情况,发现问题及时停机处理,随时检查种子和肥料的耗用情况并及时   补充。干旱严重时播种需要适当增加镇压程度。
 
  播种时期:5 cm~10 cm土层温度稳定达到10℃以上时即可播种,适宜播期一般在4月20日至5月10日。
 
  播种密度:年平均降水量大于500mm且地力较好区域,种植密度为4000 株/666.7m2~4500 株/666.7m2,即行距 60cm,株距25 cm~27 cm。降水量低于500mm区域,种植密度为3500 株/666.7m2~4000 株/666.7m2,即行距60cm,株距27 cm~32 cm。
 
  播深:墒情足、土质粘时适宜浅播,以4 cm~5 cm适宜;墒情不好、沙土地适度深播,以5 cm~6 cm适合。通常情况下,播深5 cm即可。
 
  播后苗前封闭除草:用26%噻隆•异噁酮悬浮剂25 ml~30 ml加40%乙草胺•莠去津悬浮剂100 g/666.7m2~150 g/666.7m2,对水30 kg~40 kg进行土壤封闭除草。
 
  苗期管理:按照DB14/T 759规定执行。
 
  生产档案:应建立生产档案,记录播种地所在县、乡、村名称、负责人、电话、前茬作物、玉米品种、播种时间、播种量、株行距等信息,及时登记田间农事活动记录,包括日期、活动内容、投入品名称、使用量、   使用设备、天气情况、操作人等信息,生产档案保存2年。

        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。
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