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关于印发山东省夏季蔬菜生产管理技术指导意见的通知

2022-06-20 09:51:24 来源:山东农业农村厅 阅读量:17908 评论

导读:山东农业农村厅研究制定了《全省夏季蔬菜生产管理技术指导意见》。

  山东省农业农村厅关于印发全省夏季蔬菜生产管理技术指导意见的通知
 
  鲁农技字〔2022〕26号
 
  各市农业农村局:
 
  为指导各地切实抓好夏季蔬菜生产管理,不断提高夏秋淡季蔬菜生产能力,我厅研究制定了《全省夏季蔬菜生产管理技术指导意见》,现印发给你们,请结合实际,认真参照执行。
 
  山东省农业农村厅
 
  2022年6月16日
 
  全省夏季蔬菜生产管理技术指导意见
 
  夏季是蔬菜生产淡季。加强夏季蔬菜生产管理,提高夏秋淡季蔬菜生产能力,对保障蔬菜市场供给,丰富人民群众“菜篮子”、增加农民收入具有重要意义。为指导各地切实加强夏季蔬菜生产管理,特制定本技术指导意见。
 
  一、加强在田蔬菜生产管理
 
  (一)春播(定植)设施蔬菜。春播(定植)设施蔬菜大部分进入生长后期,长势变弱,病虫害增加,要加强田间管理,挖掘生产潜力,提高有效产能。
 
  1.合理施肥。此时,植株根系吸收能力减弱,可增施钾肥,叶面肥喷施0.2%磷酸二氢钾+0.5%尿素液,增强抗逆能力。
 
  2.及时降温。夏季,光照强、气温高,易引发病毒病。应注意适时浇水降温,最好浇井水,浇匀浇透。晴天可采取外遮阳降温,也可采用中午喷水的方法降温增湿,减少病毒病发生。阴天时注意把外遮阳拉开,以防出现弱光、高湿环境,引起植株徒长和病害发生。
 
  3.打叶疏果。及时摘除老叶、病叶、畸型果等,增加下部通风。打叶时要适当留叶遮挡光照,既预防日灼果,还能减少光照直射土壤,降低土壤蓄热量。
 
  (二)越夏设施蔬菜。越夏蔬菜从定植到拉秧一直处于高温的生长环境中,要在前期促进根系发育、中期防止徒长、后期防止早衰。
 
  1.加强肥水管理。夏季气温高,植株生长快,要科学施肥浇水。一般每隔4~7天浇一次水,保持土壤湿润,避免忽干忽湿;每采收一次施一次肥或隔一水施一次肥,同时注意钙、镁、锌、硼等微量元素的施用。
 
  2.放风降温。除雨天要关闭通风口外,其他时间可一直敞开通风口。通风口要设置60目以上的防虫网,并保持完好。晴天可采取设置外遮阳、棚膜外喷涂降温剂或泥浆等措施降温,也可采用中午喷水的方法降温。
 
  3.田间管理。当植株长到30厘米左右时,要及时吊蔓。要注意观察棚内植株长势,如出现徒长时,可喷施助壮素1~2次,可有效控制徒长。可叶面补钙预防脐腐病和日灼病。
 
  4.病虫害绿色防控。要综合运用弥粉机、微粉制剂、天敌防虫、生物药剂等新技术、新产品、新装备,实现病虫害绿色防控。使用高效、低毒、低残留农药,不得使用禁用、限用农药,严格执行农药安全使用间隔期规定。加强田间虫情病情调查,对症用药,适时用药。出现感病严重的植株,要及时拔除,集中进行无害化处理。
 
  (三)露地蔬菜。夏季露地蔬菜多处于高温和旱涝交加的生长环境中,应强化病虫害预防,保证蔬菜健康生长。
 
  1.预防病虫害。夏季虫害较多,要合理设置杀虫灯进行诱杀,减少害虫危害。高温干旱易引起病毒病发生,可提前喷施盐酸吗啉胍、嘧肽吗啉胍、氨基寡糖素、香菇多糖等预防。出现干旱,要及时浇水,保持土壤湿润,可采取滴灌加微喷的方法,保持适宜的土壤和空气相对湿度。遇连阴天,易发生细菌性病害,要提前喷春雷霉素、中生菌素、噻菌铜和氢氧化铜等预防。
 
  2.及时排水。大雨过后要及时排水,下热雨后有条件的可用凉井水及时浇灌1次。夏季气温高,水分蒸发快,要合理浇水,防止忽干忽湿,导致裂果、脐腐病等发生。
 
  3.植株调整。对需要搭架、绑蔓的蔬菜,要根据植株长势及时进行。适时整枝、打杈、摘除病叶及下部黄叶,改善通风透光条件。合理疏花疏果、摘除畸型果,提高果实质量。根据市场需求和成熟标准,及时采收,保证产品品质。
 
  二、强化空闲期管理维护
 
  冬春茬或早春茬设施蔬菜收获后,接续进行秋延迟或秋冬茬蔬菜生产,一般在夏季有1~2个月的生产空闲期。切实做好设施设备及园区管理,对下茬蔬菜生产有着非常重要的意义。
 
  (一)重视拉秧期管理。进入拉秧期,产量下降,产值降低,但不能因此放弃管理,特别要强化病虫害的防治。如果不再采收产品销售,可以适当加大防治药剂施用量,确保棚内病虫害不蔓延。
 
  (二)适时高温闷棚。夏季高温闷棚可有效杀死棚内空间和土壤中的有害生物。推荐结合蔬菜秸秆原位还田技术进行高温闷棚。具体方法:将感病严重的植株、叶片等移出设施外单独处理,并使用药剂灌穴,然后密闭设施,释放高效、低毒的杀虫杀菌烟剂,密闭2~3天后放风排气。移除吊绳、支架、地膜等不能降解物。用蔬菜秸秆还田机将蔬菜秸秆切碎、灭茬,每亩均匀撒施尿素5~7.5公斤、秸秆腐熟菌剂10公斤以上,要早、晚撒施,避免阳光直射。撒施秸秆腐熟菌剂后,立即用旋耕机翻耕土壤使蔬菜秸秆、尿素、秸秆腐熟菌剂与土壤混匀。翻耕土壤后,浇透水,覆盖地膜,密闭设施15~20天。闷棚结束后,棚室放风2~3天,并进行二次旋耕,备播。
 
  也可采用石灰氮+麦秸等未腐熟有机物的方式进行高温闷棚。闷棚结束后,需要配施生物菌剂,活化土壤。
 
  (三)保持园区清洁。夏季气温高、雨水多,园区非生产区极易杂草丛生,成为病虫的寄主,增加病虫基数。要及时清除杂草,喷施杀虫杀菌剂,疏通沟渠,归整农具,保持园区清洁。
 
  (四)检修设施设备。棚膜出现破损要立即修补,否则因漏雨导致棚体钢架生锈、墙体坍塌,缩短设施使用寿命,也有可能出安全隐患。要做好卷帘机、卷膜器、自动放风机、专用小型机械、水肥一体化机以及物联网装备等设施设备日常维护,确保运行正常。
 
  三、着力做好防灾减灾
 
  夏季灾害性天气发生频繁,做好防灾减灾,也是增产增收的有效途径。同时,不同灾害可能重叠发生,要有机融合多种技术措施,尽最大努力减轻灾害损失。
 
  (一)洪涝。要时时关注天气预报,提前采取防范措施,做好设施设备的检修工作,提高抗灾能力,保证排水渠道畅通。灾后要及时排出田间积水,可喷施叶面肥,让植株迅速恢复生长;清洁田园,喷洒1~2遍广谱杀菌剂;检查设施设备,出现损坏及时修补。救灾期间一定要高度重视安全生产,避免发生次生事故。
 
  (二)冰雹。对果实较大的瓜类蔬菜,可提前用稻草等进行单瓜遮盖。受灾较轻、可继续生产的菜田,要迅速清除残枝败叶,喷施1~2遍广谱杀菌剂预防病害,可喷施叶面肥和油菜素内酯等,促进蔬菜生长。绝收的菜田,要迅速清除残枝,清洁田间,根据生产实际和市场需求复种适宜品种的蔬菜。
 
  (三)连阴天。遇到连阴天,要及时采收达到或基本达到采收标准的果实,减轻植株负担;降低棚内温度和湿度,防止植株徒长;要采用弥粉机配套微粉制剂防治病虫害。
 
  四、科学安排接茬蔬菜
 
  (一)合理安排茬口。下茬蔬菜栽培茬口主要是棚室秋延迟茬、秋冬茬和露地秋茬,要根据市场预期和栽培习惯,提前谋划好不同茬口的播种(定植)时间、种植品种等。
 
  (二)做好生产准备。备好种苗、有机肥、化肥、农药、农膜等生产资料,检修维护好设施设备,确保适期播种(定植),不误农时。
 
  (三)搞好种苗繁育。育苗企业要在市场调研的基础上,做好下茬蔬菜育苗的准备工作。秋季蔬菜育苗期正值高温多雨、病虫害多发时期,提倡菜农提前从市场信誉度高的育苗企业订购苗子,尽量降低自育苗率,为丰产增收打下基础。
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