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哈尔滨市《DB 2301/T 109—2022水稻秸秆全量还田节水灌溉技术规程》

2022-11-15 14:59:55 来源:农机网整理发布 阅读量:35110 评论

导读:该标准规定了水稻秸秆全量还田节水灌溉技术规程的术语和定义、环境条件、秸秆处理与整地、节水灌溉、化学除草、收获和生产档案。

  【农机网 政策与标准《DB 2301/T 109—2022水稻秸秆全量还田节水灌溉技术规程》该地方标准是由哈尔滨市农业技术推广总站提出,由哈尔滨市农业农村局归口,由哈尔滨市农业技术推广总站、东北农业大学起草。于2022年10月12日由哈尔滨市市场监督管理局批准发布,自2022年11月11日开始实施。
 


 

  该标准规定了水稻秸秆全量还田节水灌溉技术规程的术语和定义、环境条件、秸秆处理与整地、节水灌溉、化学除草、收获和生产档案。适用于水稻秸秆全量还田节水灌溉栽培。
 
  秸秆处理与整地——
 
  秸秆处理:秋季水稻收获后对秸秆进行粉碎处理,秸秆长度等于或小于10 cm,根茬高度等于或小于10 cm, 秸秆粉碎长度合格率不低于85 %,粉碎后的秸秆应均匀抛撒覆盖地表。
 
  整地——
 
  翻耕:秋季土壤封冻前,土壤含水量在 25 %~30 %时,撒施氮肥,氮肥用量折合纯氮 20 kg/hm2,使用铧式犁将秸秆、根茬及氮肥翻埋于土壤中,作业深度 18 cm~22 cm,翻耕作业质量应符合 NY/T 501 的规定。
 
  旋耕:秋季土壤封冻前或翌年春季土壤化冻 15 cm 以上,撒施氮肥,氮肥用量折合纯氮 20 kg/hm2,使用旋耕机将秸秆、根茬和氮肥混拌于土壤中,作业深度 12~15cm。肥料施用应符合 NY/T496 的规定。
 
  放水泡田:春季插秧前20 d~30 d放水泡田,泡田5 d~7 d,翻耕地块泡田深为垡片高度的2/3,旋耕地块采用花达水泡田。
 
  搅浆:插秧前15 d~20 d采用搅浆平地机进行水耙地,耙后秸秆应混搅于泥浆中,无秸秆及根茬漂浮, 田块四周平整一致。耙后田面应保持30 mm~50 mm水层,沉淀后在田面指划成沟,后缓慢恢复平整, 为最佳沉淀状态。其它作业质量应符合NY/T 501的规定。
 
  节水灌溉——
 
  浅水插秧:插秧时,田面以保持10 mm~20 mm 浅水层为宜,秧苗插稳并防止飘秧。
 
  分蘖前期湿润灌溉:插秧后,需灌30 mm左右返青水,返青成活后至分蘖前期保持10 mm~20 mm 浅水层。
 
  6分蘖后期晒田:在分蘖末期,根据苗情,一般晒至土壤饱和含水率的70 %~80 %,苗情好者取下限,否则取上限。
 
  幼穗分化至扬花期浅水灌溉:拔节期后,采取10 mm~20 mm浅水灌溉,避免水分亏缺。
 
  灌浆结实期间歇灌溉:籽粒灌浆结实期,一次灌水20 mm~30 mm,自然落干后再灌水,如此往复。收获前30 d左右断水。
 
  化学除草:插秧前5 d~7 d使用化学除草剂封闭除草,插秧后7 d~10 d,使用化学除草剂除草,按照产品说明书采用药土法均匀撒施或均匀喷雾,化学防治应使用高效、低毒、低残留农药品种,药剂选择和使用应符合GB/T 8321.10和NY/T 1276的要求。
 
  收获:在水稻籽粒成熟度达到 95 %以上时,采用机械收获,秸秆粉碎均匀抛撒,秸秆粉碎长度小于等于10 cm。
 
  生产档案:应建立生产档案,内容包括环境条件、秸秆处理与整地、节水灌溉、化学除草、收获等。
 
  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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