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北京市春季粮食作物生产机械化技术指导意见

2024-04-17 08:39:27 来源:北京市农业农村局 阅读量:16484 评论

导读:作业主要针对春玉米播种前,对进行秸秆粉碎还田或捡拾打捆收集,以利于进行肥料化、饲料化或基料化等方式的综合利用。

  【农机网 地方农机】为认真贯彻全国春耕备耕工作会议精神,落实主要粮油作物大面积提单产行动,结合京郊主要粮食作物生产实际,围绕全面抓好粮食作物机耕机播质量和单产提升工作,提出如下技术指导意见。
 
  一、春玉米生产减损增效农机技术要点
 
  (一)深松机械化技术。播种前进行深松整地联合作业,改善土壤的通透性,加深耕作层,提高土壤蓄水能力,有利于玉米根系深扎,可提高抗旱、抗倒能力。根据土层厚度等因素综合确定深松深度,一般应达30cm,山区耕作层30cm以下存在较多石块区域,深松深度一般大于25cm即可。深松联合整地后要做到田面平整细碎,上虚下实,为播种创造良好的种床条件。
 
  (二)精量播种机化技术。根据生产条件、地力基础和气候条件,选用经国家和省级审定的优质高产、抗逆性强、适应性广、宜机收优良品种,应采用种子包衣或药剂拌种进行病虫害防治。播种机应具有开沟、播种、施肥、覆土、镇压等功能,要求作业通过性强、无堵塞、播种质量好、能同时深施化肥。为配合机收作业,确保机收效果,最好选用行数、行距与收获机匹配的玉米精量播种机进行播种作业,推荐配套使用具备北斗辅助驾驶导航功能的拖拉机,以有效提升播种质量和土地利用率。根据种子实际情况,选择适宜的播种机类型和排种部件。为实现苗齐苗全苗壮,严格按品种标准密度确定下种量,一穴一粒,不重播、不漏播。适时开展机播作业,当地温稳定在10℃以上、土壤含水量在20%左右时,方可开始播种。精量播种作业质量应满足播种深度合格率≥80%,粒距合格率≥95%,出苗率90%以上。播种前要按照播种要求,做好播种机株距、行距、播深、下肥量的调整,并进行试播后扒开土壤检查,符合要求后再进行大面积播种。播种时随时查看播种机工作情况,出现故障立刻排除,以防出现漏播或断行,如出现要及时补播。指夹式播种机作业速度控制在6~8km/h,气力式播种机为8~10km/h。
 
  (三)植保机械化技术。播种完成后,建议使用符合标准的农药品种和用量,重点选择杀草谱宽、持效期适中、无残效、对后茬作物无影响的除草剂。植保机械应选用配有雾化程度高、防漂移扇形喷头的自走式喷杆喷雾机,用于喷洒的农药应为液态药剂,且经过搅拌后沉淀较少。机具作业前,应逐个校核喷头流量,及时更换不合格的喷头;植保机械作业时,应根据植保技术要求、机具喷幅和喷头总流量,来调整机具行走速度,喷药过程不得重喷和漏喷。喷施过程中,作业机手和相关人员必须佩戴好防护用具,注意风向,防止人员吸入农药引发中毒。
 
  二、冬小麦田间管理农机技术要点
 
  (一)镇压机械化技术。作业应密切关注天气变化,小麦返青前表土化冻5~8cm,白天最高气温达到5℃左右时进行。要因苗因地因天选择开展镇压作业,严格贯彻“压干不压湿(地表),压软不压硬(麦苗),压旺不压弱(麦田)”的原则。镇压最佳时期为压后表层出现一层很薄的碎土时为宜,土壤过干或过湿都不宜采用。应选用平滑型镇压器,镇压作业时,行走速度要均匀,以土壤压实为根本标准,根据机具重量、地块平整度等因素综合选择适宜速度。
 
  (二)植保机械化技术。小麦起身拔节期和抽穗期是病虫害防治的两个关键时期。应根据小麦生长情况和杂草情况综合判断,选择适宜的药剂和施药时间。喷施除草剂一般选择在10~20℃的温度范围内进行,如果温度低于10℃以下,用药的效果会显著下降。在植保机具选择上,可采用喷杆式喷雾机、农用植保无人机等机具。
 
  (三)节水灌溉技术。冬小麦浇水时间应视苗情和墒情而定,可根据苗情长势,结合浇水同步施肥。灌溉前对机井、泵站、管道设施、过滤装置和机具设备进行检查,确保功能完好。按作物需求和机具设备的供水能力计算合理的灌溉流量和作业速度。按灌溉设备操作规范开展作业,及时排除故障,保证机具设备安全运行。
 
  三、农作物秸秆综合利用机械化作业技术要点
 
  作业主要针对春玉米播种前,对进行秸秆粉碎还田或捡拾打捆收集,以利于进行肥料化、饲料化或基料化等方式的综合利用。
 
  (一)秸秆捡拾打捆技术。秸秆捡拾打捆技术是通过秸秆捡拾打捆机,将玉米收获后的残留秸秆捡拾打捆,可有效解决因机收或人工收获后农田秸秆残留量大的问题。打捆秸秆成捆率应达到98%以上,草捆抗摔率应达到90%以上。
 
  (二)秸秆粉碎还田技术。秸秆粉碎还田技术是通过秸秆粉碎还田设备,将农作物秸秆粉碎还田,秸秆经过一段时间的腐熟作用后,可以转化成有机质和速效养分,改良土壤理化性状,培肥地力,秸秆粉碎还田技术能够促进农业节水、节本、增产、增效,对农业可持续发展具有促进作用。秸秆粉碎后长度应小于10cm,碎茬长度应小于5cm,切碎长度合格率应达到90%以上,秸秆漏切率应小于1.5%。秸秆粉碎还田时,地表残茬高度应小于8cm。秸秆、根茬粉碎还田后应做到抛洒均匀无堆积。
 
  四、农机作业信息化与自动化技术要点
 
  (一)农机辅助驾驶导航技术。利用高精度北斗卫星定位导航信息,控制器实时向液压控制阀发送指令,从而控制农机按照设定路线(直线或曲线)进行自动驾驶。重点围绕粮食作物生产需求,推进农机化与信息化相互融合,高质高效开展耕整地、精量播种、植保、灌溉、施肥、收获、秸秆处理、场地干燥、储运等全程机械化集成配套技术推广。
 
  (二)智能水肥一体化技术。在农作物生长期内,利用原有喷灌机上加装的智能施肥系统,实现远程水泵控制、入机流量及压力监测、基于北斗定位的运行位置监测、手机APP控制等功能。同时具备本地及远程控制、运行状态监测等能力,融合域内气象、视频等信息,实现作物生长期内精准水肥一体化作业。
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