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辽宁省DB21/T 3209—2019《玉米秸秆间隔条带还田机械化栽培技术规程》

2024-01-10 15:21:34 来源:农机网整理发布 阅读量:39437 评论

导读:标准规定了玉米秸秆间隔条带还田机械化栽培技术的秸秆间隔条带还田、品种选择与种子处理、免耕播种与施肥、化学药剂除草、病虫害防治和机械化收获的技术要求。

  【农机网 政策与标准】2019年12月20日,辽宁省市场监督管理局批准发布DB21/T 3209—2019《玉米秸秆间隔条带还田机械化栽培技术规程》,这一地方标准自2020年1月20日起实施。
 
  该标准由辽宁省农业农村厅提出并归口管理,由沈阳农业大学、中国农业科学院作物科学研究所起草,标准规定了玉米秸秆间隔条带还田机械化栽培技术的秸秆间隔条带还田、品种选择与种子处理、免耕播种与施肥、化学药剂除草、病虫害防治和机械化收获的技术要求。适用于玉米秸秆间隔条带还田机械化栽培。
 
  作业流程:
 
  秸秆条带还田:玉米机械化收获后,选用间隔耕作秸秆条带还田机进行秸秆条带还田,秸秆残茬均匀分布于非播种行(垄)0~≥15cm土层中,采用间隔耕作方式逐年互换。
 
  品种选择与种子处理:选择适宜当地自然生态条件、经国家或省级审定推广的优质玉米杂交种。种子质量标准应符合GB 4404.1的要求;种子播前晾晒3天~5天,晾晒后的种子选用防虫抗病的种衣剂进行种子包衣。
 
  免耕播种与施肥:
 
  免耕播种的作业要求:免耕播种机作业质量及作业技术规范应符合NY/T 1628的要求。
 
  免耕播种技术:春季播种带地温稳定通过10℃、播种层土壤相对含水量在70%左右时,按间隔耕作方式进行免耕播种与施肥作业,播种密度根据品种特性合理密植。
 
  施肥:播种时,口肥施于距种子侧下方3cm~5cm处,侧深施肥则施于种子侧6cm~8cm、深10cm~12cm处。
 
  口肥以速效氮肥为主,纯氮量为60 kg ·hm-2~80 kg ·hm-2;根据土壤肥力状况,酌情侧深施相当于纯氮量为120kg ·hm-2~160kg·hm-2、纯磷量(P2O5)80kg·hm-2~85kg·hm-2、纯钾量(K2O)95kg ·hm-2~100kg·hm-2的缓释复混肥。
 
  化学药剂除草:
 
  要求:严格按说明书操作使用除草剂,农药喷雾机(器)田间操作及喷洒质量应符合GB/T 17997的要求。
 
  时间及方法:选用喷杆喷雾机进行播后苗前或苗后化学药剂除草,且避免在降雨前作业。播后苗前宜在地表湿润、
 
  小于三级风的条件喷施,如果土壤干旱要选择无风的傍晚,先喷一次水再喷药,避免苗带集中喷药;苗后除草则宜在玉米2叶~4叶期,且定向喷雾,避免药剂与玉米苗接触。
 
  病虫害防治:
 
  要求:农药安全使用标准、农药喷雾机(器)田间操作规程及喷洒质量需符合GB/T 8321、GB/T 17997的要求,并要严格按照药剂使用说明书使用。
 
  防治方法:病虫害防治本着“预防为主,综合防治”的原则,在综合防治中以农业防治为基础。选用抗病品种,合理密植,加强田间管理,改善生态环境,及时防除杂草。
 
  采用虫害天敌(如赤眼蜂等)、BT乳剂、白僵菌等,或采用杀虫灯、性诱剂等防治。
 
  在病虫害发生初期采用机械化喷洒液体药剂方式进行,依照当地植保部门监测预报或灾害发生情况确定防治时期。
 
  机械化收获:
 
  要求:玉米机械收获技术条件、作业质量应符合GB/T 21962、NY /T 1355的要求。
 
  收获机械选择:玉米成熟后,利用玉米联合收获机进行收获。当籽粒含水率≥25%时,采用玉米联合果穗收获机收获;当籽粒含水率<25%时,可采用玉米联合籽粒收获机收获。
 
  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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