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山西省《粮食作物播种机械化技术试验示范项目实施方案》技术要求及规范

2022-06-07 09:20:56 来源:农机网整理发布 阅读量:24330 评论

导读:近日,山西省农业机械发展中心印发了粮食作物生产9个机械化新技术示范推广项目实施方案。其中,《粮食作物播种机械化技术试验示范项目实施方案》技术要求及规范如下:

  【农机网 地方农机】近日,山西省农业机械发展中心印发了粮食作物生产9个机械化新技术示范推广项目实施方案。其中,《粮食作物播种机化技术试验示范项目实施方案》要求结合各地农业生产特点和需求,以粮食作物播种机械化技术装备引进试验示范工作为主要内容,以推动粮食作物播种机械提档升级为目标,全面推进山西省粮食作物全程机械化水平,促进农民增产增收。
 

 

  【技术要求及规范】根据不同作物,选择相应的技术要求:
 
  谷子机械化播种——
 
  播前准备:根据不同农业生产条件,选择高产优质谷子品种。播种前晒种两天,用10% 的盐水漂去扁粒,再用清水淘洗净盐分。根据当地防治病虫害的需要,选择专用药剂进行包衣或拌种处理;已经包衣的种子用强风吹选后晒种催芽,以减少瘪种、破种、病虫害种,以提高谷子出苗率。播种前需要做发芽试验,以准确确定播种量。
 
  免间苗播种机的准备和调试:根据实际农业生产情况,选配适宜的播种作业机具。覆膜播种可选用鸭嘴式铺膜穴播机;不覆膜播种可选用窝眼轮式、气力式精量播种机作业。配套动力为25~50马力。播种作业前,应对播种机进行全面细致的技术状态检查调整,使播种机各装置连接牢固,转动部件灵活、可靠,润滑状况良好,悬挂升降装置灵敏。
 
  播种:根据当地无霜期长短和品种特性,当地表下5 cm的地温稳定达到12℃即可播种,一般在4月下旬至5月中旬。地膜覆盖播种深度以4~5cm,裸地播种以5~6cm较为适宜。根据种子的纯度、净度、发芽率、杂交率综合计算,每亩的播量为0.15~0.3kg,在此范围内,好地宜密,差地宜稀;旱地宜稀,水浇地宜密。
 
  控制播种密度是做好免间苗播种的最关键一环。覆膜穴播:穴距20cm,行距40~50cm,下种粒数6~9粒,亩留苗3万苗;不覆膜播种:株距12cm,行距40~50cm,下种粒数3~5粒,水肥条件较好的旱地亩留苗3万苗,中等水肥条件的旱地亩留苗2.5万苗,水肥条件较差的旱地亩留苗2万苗。
 
  土壤墒情较差时,播后应镇压,覆土厚度为3~5mm,以增加土壤的紧密程度,使下层水分上升,利于种子发芽出苗。
 
  玉米机械化播种——
 
  选种:玉米种子应选用高产、稳产、抗倒、抗病、品质优良,适合当地种植的品种,种子应进行包衣处理或药剂拌种,种子净度≥97%,种子发芽率≥95%。
 
  适时播种:当地温达到并稳定在10~12℃,土壤含水率在13%~15%时,适时进行播种作业。
 
  机械化播种:播种前要对播种机进行调试,并进行试播。按行距55~65cm规范种植,株距按不同品种的亩株数计算,并结合播种机株距值确定。播种深度4~6cm,施肥深度10~12cm,种肥间隔5cm。玉米播种的同时喷施化学除草剂进行封闭灭草。
 
  小麦机械化播种——
 
  适期播种:根据气候、品种类型、土壤墒情确定适宜播期。具体确定小麦播种适期时,还要考虑麦田的土壤类型、土壤墒情和安全越冬情况等,旱地小麦可在适宜播种期前后抢墒播种。
 
  适量播种:一年两熟区小麦每亩播种量20-25kg,播深3-5cm,施肥深度8-10cm。但应根据播种时土壤墒情、整地质量、土壤质地和种子发芽率等情况适当增减。在干旱年份和晚播条件下,应适当增加播种量,但也要避免盲目加大播种量,导致成本增加基本苗过多。
 
  注:本文由农机网(www.nongjx.com)整理发布,资料来源:山西省农业机械发展中心。
 
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