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2024年夏季蔬菜生產(chǎn)技術(shù)指導(dǎo)意見(jiàn)

2024-06-24 10:38:44 來(lái)源:全國(guó)農(nóng)業(yè)技術(shù)推廣服務(wù)中心 閱讀量:14304 評(píng)論

導(dǎo)讀:農(nóng)業(yè)農(nóng)村部種植業(yè)管理司會(huì)同全國(guó)農(nóng)業(yè)技術(shù)推廣服務(wù)中心、農(nóng)業(yè)農(nóng)村部蔬菜專(zhuān)家指導(dǎo)組、國(guó)家大宗蔬菜產(chǎn)業(yè)技術(shù)體系,提出2024年夏季蔬菜生產(chǎn)技術(shù)指導(dǎo)意見(jiàn)。

  【農(nóng)機(jī)網(wǎng) 熱點(diǎn)關(guān)注】 根據(jù)氣象部門(mén)預(yù)測(cè),受赤道中東太平洋由厄爾尼諾向拉尼娜轉(zhuǎn)換影響,今年夏季我國(guó)氣候狀況總體偏差,東部季風(fēng)區(qū)降水總體偏多,區(qū)域性和階段性洪澇災(zāi)害明顯,極端天氣氣候事件偏多,局地發(fā)生極端性強(qiáng)降水的可能性較大。為有效防范、減輕極端天氣對(duì)蔬菜生產(chǎn)造成不利影響,提高夏季蔬菜生產(chǎn)管理針對(duì)性和技術(shù)水平,促進(jìn)蔬菜穩(wěn)產(chǎn)穩(wěn)供,農(nóng)業(yè)農(nóng)村部種植業(yè)管理司會(huì)同全國(guó)農(nóng)業(yè)技術(shù)推廣服務(wù)中心、農(nóng)業(yè)農(nóng)村部蔬菜專(zhuān)家指導(dǎo)組、國(guó)家大宗蔬菜產(chǎn)業(yè)技術(shù)體系,提出2024年夏季蔬菜生產(chǎn)技術(shù)指導(dǎo)意見(jiàn)。
 
  露地蔬菜生產(chǎn)管理
 
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  目前,露地在田蔬菜主要以黃瓜、番茄、茄子、辣椒、豇豆、菜豆等果菜類(lèi)蔬菜和甘藍(lán)、菜花等十字花科蔬菜為主。
 
  (一)果菜類(lèi)蔬菜
 
  1.植株管理。對(duì)于需要搭架栽培的瓜類(lèi)、茄果類(lèi)和豆類(lèi)蔬菜盡早搭架,及時(shí)進(jìn)行整枝、打杈、摘心等田間作業(yè),增加通風(fēng)透光。及時(shí)清潔菜園,加固菜架,清除殘枝病果,適時(shí)培土擁根,增強(qiáng)抗倒能力。光照強(qiáng)度較高地區(qū),要防止番茄、辣椒等日燒病發(fā)生,可以通過(guò)果實(shí)上部保留一定葉片數(shù)量,避免果實(shí)直曬。
 
  2.水肥管理。番茄、黃瓜等果菜在初花期適度控水,淺中耕,進(jìn)行蹲苗,促進(jìn)坐果。進(jìn)入產(chǎn)品形成期,水肥管理遵循少量多次原則,推薦使用水肥一體化技術(shù)。瓜類(lèi)、茄果類(lèi)、豆類(lèi)蔬菜應(yīng)配合施用氮、磷、鉀肥;在產(chǎn)量形成關(guān)鍵期,可根據(jù)植株長(zhǎng)勢(shì)進(jìn)行葉面噴肥,可用0.3%—0.5%磷酸二氫鉀和0.3%的尿素混合溶液或氨基酸類(lèi)葉面肥噴施作物葉面,隔7—10天噴一次,連噴2—3次,防止植株早衰。夏季高溫期澆水應(yīng)選擇在上午10時(shí)之前和下午16時(shí)以后。如遇持續(xù)高溫干旱,應(yīng)適時(shí)引水灌溉,保持土壤濕潤(rùn);強(qiáng)降雨后要及時(shí)清溝排水,縮短蔬菜受淹時(shí)間。
 
  3.防治病蟲(chóng)害。夏季蔬菜易發(fā)生疫病、炭疽病、根腐病、枯萎病、霜霉病、白粉病等病害和煙粉虱、豆野螟、小菜蛾、斜紋夜蛾、桃蚜等蟲(chóng)害。高溫高濕天氣可噴灑1—2次多菌靈或甲基托布津等廣譜性殺菌劑預(yù)防病害。及時(shí)清除菜田內(nèi)及周邊雜草,減少病蟲(chóng)寄主,減輕病害發(fā)生。
 
  (二)葉菜類(lèi)蔬菜
 
  對(duì)于茬口密集、生長(zhǎng)時(shí)間短、以直播為主的葉菜類(lèi)蔬菜,主要做好以下工作。一是盡量選擇地勢(shì)高燥、土壤肥沃、澆水便利、排水良好的地塊。二是優(yōu)先選用耐高溫、耐旱、耐澇的品種。三是采用高畦栽培方式,改善田間通風(fēng)透光條件,減少田間積水。四是播種后利用遮光率60%左右黑色遮陽(yáng)網(wǎng)、薄型無(wú)紡布等輕型覆蓋材料進(jìn)行浮動(dòng)覆蓋,降低地溫,保持土壤濕度,促進(jìn)出苗整齊;對(duì)于小白菜、菜心等速生綠葉蔬菜可全生育期浮動(dòng)覆蓋40目防蟲(chóng)網(wǎng),減少農(nóng)藥使用,確保質(zhì)量安全。
 
  對(duì)于生長(zhǎng)期比較長(zhǎng)的十字花科的甘藍(lán)、菜花、大白菜等,在水肥管理上先控后促,可采用噴灌、隔溝交替灌溉、膜上溝灌等節(jié)水技術(shù);施肥以氮肥為主,薄肥勤施。病蟲(chóng)害防控可在田間安裝殺蟲(chóng)燈、黑光燈、信息素誘捕和干擾迷向等綠色防控技術(shù),及時(shí)防治病害,提倡2—3種藥劑交替使用,嚴(yán)格執(zhí)行農(nóng)藥使用安全間隔期;多次收獲的蔬菜應(yīng)先采收后噴藥,確保蔬菜安全。及時(shí)關(guān)注天氣預(yù)報(bào),在臺(tái)風(fēng)、冰雹、強(qiáng)降雨等災(zāi)害性天氣前,搶收達(dá)到采收標(biāo)準(zhǔn)的蔬菜,降低災(zāi)害天氣損失。
 
  (三)高山蔬菜
 
  夏季高海拔區(qū)域以種植喜冷涼的蘿卜、甘藍(lán)、大白菜為主,中高海拔區(qū)域以種植喜溫的辣椒、番茄和四季豆為主。高山蔬菜多為坡地種植,夏季雨水較多易導(dǎo)致蔬菜脫肥缺素和病蟲(chóng)害發(fā)生,需加強(qiáng)管理。
 
  1.科學(xué)安排播期與品種。番茄、辣椒和四季豆等喜溫蔬菜適宜800—1400米中高海拔地區(qū)種植,蘿卜、大白菜、甘藍(lán)等喜涼耐寒蔬菜適宜1200米以上高海拔地區(qū)種植。5—6月高海拔地區(qū)處于低溫長(zhǎng)日照季節(jié),容易達(dá)到十字花科蔬菜作物的低溫春化條件,所以應(yīng)選晚抽薹品種,并且掌握好適宜播期。高山高海拔地區(qū)晝夜溫差大、紫外光強(qiáng),產(chǎn)品運(yùn)輸距離遠(yuǎn),宜選擇抗病抗逆性強(qiáng)、商品性狀好、耐貯運(yùn)的品種。
 
  2.十字花科蔬菜管理關(guān)鍵技術(shù)措施。一是防治十字花科蔬菜根腫病。應(yīng)采用十字花科與非十字花科蔬菜輪作倒茬。實(shí)施土壤消毒,增施有機(jī)肥、調(diào)酸補(bǔ)鈣,提高作物抗病能力,發(fā)現(xiàn)病株及時(shí)拔除,病穴及時(shí)撒生石灰,病株集中燒毀,減少病菌重復(fù)侵染。二是防治地下害蟲(chóng)。對(duì)地下害蟲(chóng)為害地塊,播種前20天以上采用石灰氮或生石灰消毒,用薄膜覆蓋畦面持續(xù)保濕10天然后晾曬。加強(qiáng)溫濕度和水分管理,改善栽培環(huán)境。蔬菜收獲后,及時(shí)將病蟲(chóng)殘葉、雜草清理干凈,集中于田頭進(jìn)行堆漚處理或進(jìn)行無(wú)害化還田處理,減少蟲(chóng)源。通過(guò)殺蟲(chóng)燈、黃板誘殺技術(shù)減少成蟲(chóng)為害及產(chǎn)卵量。
 
  3.茄果類(lèi)蔬菜穩(wěn)產(chǎn)關(guān)鍵技術(shù)措施。高山雨水多,晚疫病等雨傳性病害易大發(fā)生,坡地淋溶易導(dǎo)致土壤酸化脫肥。高山番茄、辣椒等果菜應(yīng)采用大棚避雨栽培技術(shù),采用簡(jiǎn)易鋼架大棚,頂部鋪薄膜,四周?chē)老x(chóng)網(wǎng),實(shí)現(xiàn)避雨防蟲(chóng);調(diào)酸補(bǔ)鈣,增施含有益菌群的功能有機(jī)肥提高土壤肥力;配套建設(shè)集水池,棚內(nèi)采用膜下滴灌技術(shù),實(shí)現(xiàn)精準(zhǔn)施肥。
 
  4.夏季災(zāi)害預(yù)防。高山高原地區(qū)易發(fā)生強(qiáng)對(duì)流天氣,重點(diǎn)防范突發(fā)冰雹危害,應(yīng)在高發(fā)區(qū)域預(yù)先設(shè)置支架,有冰雹預(yù)警時(shí)提前安裝防雹網(wǎng);遇有短時(shí)大風(fēng)、臺(tái)風(fēng)等強(qiáng)對(duì)流天氣,要提前加固設(shè)施,壓緊壓膜線,防止大風(fēng)掀膜;盡量采用深溝高壟栽培模式,便于排水。
 
  設(shè)施蔬菜生產(chǎn)管理
 
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(一)在田蔬菜管理
 
  1.環(huán)境管理。夏季蔬菜環(huán)境調(diào)控的重點(diǎn)是通風(fēng)降溫。夏季溫度高時(shí),溫室和大棚頂部所有通風(fēng)口全部打開(kāi),通風(fēng)口處安裝40目防蟲(chóng)網(wǎng),降低棚室內(nèi)溫濕度。采用遮光降溫時(shí),要根據(jù)栽培作物對(duì)光照強(qiáng)度的要求和管理成本,在溫室、大棚頂部外覆蓋適宜遮光率的黑色遮陽(yáng)網(wǎng)、噴涂遮陽(yáng)涂料等進(jìn)行遮光降溫;加強(qiáng)遮陽(yáng)網(wǎng)的揭蓋管理,果菜類(lèi)蔬菜一般在晴天上午10時(shí)至下午16時(shí)進(jìn)行遮陽(yáng)降溫,陰雨天和早晚打開(kāi)遮陽(yáng)網(wǎng);葉菜類(lèi)蔬菜可全天進(jìn)行遮陽(yáng)管理,在上市前3—5天打開(kāi)遮陽(yáng)網(wǎng),增加光照,提高蔬菜營(yíng)養(yǎng)品質(zhì)和商品性。對(duì)安裝有噴霧設(shè)施的溫室和大棚,可在上午11時(shí)前開(kāi)啟噴霧設(shè)施降溫,下午3時(shí)左右關(guān)停。夏季溫度高、雨水多的地區(qū)的塑料大棚可采用頂膜+遮陽(yáng)網(wǎng)+四周防蟲(chóng)網(wǎng)的“兩網(wǎng)一膜”覆蓋方式進(jìn)行避雨降溫防蟲(chóng)栽培。密切關(guān)注天氣變化,如遇強(qiáng)對(duì)流天氣,提前做好防范工作,加固棚架,關(guān)閉所有通風(fēng)口,收緊遮陽(yáng)網(wǎng),強(qiáng)對(duì)流天氣結(jié)束及時(shí)通風(fēng)降溫。
 
  2.植株管理。果菜類(lèi)蔬菜管理重點(diǎn)是平衡秧果關(guān)系,及時(shí)進(jìn)行整枝、綁蔓、摘除植株中部和下部的黃葉、病葉,適時(shí)摘除頂心和側(cè)芽等,保持適宜的葉面積指數(shù),促進(jìn)通風(fēng)和植株平衡生長(zhǎng)。摘除畸形果,提高商品性。高溫期番茄等花粉量少活力差、坐果困難,可合理使用植物生長(zhǎng)調(diào)節(jié)劑?;ū9?。
 
  3.水肥管理。對(duì)進(jìn)入結(jié)果期或收獲期的果菜類(lèi)蔬菜,高溫期水肥供應(yīng)要遵循少量多次原則,維持土壤濕度和肥料濃度穩(wěn)定,促進(jìn)根系生長(zhǎng);按照控氮增鉀和薄肥勤施原則施肥,適時(shí)增施硼、鎂、鈣等中量營(yíng)養(yǎng)元素,硼、鋅、錳、鉬、硒等微量元素。夏季澆水時(shí)間宜選在清晨,最好用井水或低溫河水澆灌,降低土壤溫度;對(duì)根系或植株生長(zhǎng)相對(duì)較弱、果實(shí)負(fù)載高的蔬菜,可補(bǔ)充氨基酸、腐殖酸類(lèi)水溶肥促進(jìn)根系生長(zhǎng)或結(jié)合葉面追肥,促進(jìn)植株?duì)I養(yǎng)生長(zhǎng)。
 
  4.病蟲(chóng)害綜合防控。夏季設(shè)施內(nèi)溫度高、濕度大,病蟲(chóng)害多發(fā),防控難度大。堅(jiān)持預(yù)防為主、綜合防治的原則,盡量控制蔬菜病蟲(chóng)危害。農(nóng)業(yè)防治。結(jié)合倒茬換茬,優(yōu)化布局,合理輪作,減少病菌初次侵染來(lái)源。結(jié)合農(nóng)事操作,及時(shí)鏟除雜草,摘除老葉、病葉(枝、株、果),集中處理,減少病蟲(chóng)基數(shù)。生物防治。保護(hù)利用天敵,使用生物制劑(如蘇云金桿菌、阿維菌素等)、植物源殺蟲(chóng)劑、昆蟲(chóng)生長(zhǎng)調(diào)節(jié)劑和特異性農(nóng)藥等進(jìn)行防治。物理防治。采用防蟲(chóng)網(wǎng)阻隔,色板驅(qū)避、誘殺等技術(shù)進(jìn)行防治。化學(xué)防治。加強(qiáng)蔬菜病蟲(chóng)害的監(jiān)測(cè)預(yù)報(bào),選擇有效藥劑和最佳防治時(shí)機(jī),對(duì)癥、適時(shí)用藥。使用高效低毒、低殘留農(nóng)藥;科學(xué)合理地進(jìn)行農(nóng)藥的復(fù)配混用和輪換交替使用;注意農(nóng)藥安全間隔期。
 
  (二)設(shè)施休閑期管理
 
  對(duì)于夏季有30—50天休閑期的溫室和大棚,可根據(jù)溫室和大棚的具體情況,進(jìn)行分類(lèi)管理。
 
  1.秸稈原位還田。結(jié)合高溫悶棚或其他土壤消毒技術(shù)(如石灰氮消毒)進(jìn)行蔬菜秸稈原位還田,既可減少秸稈拔除人工成本,解決蔬菜秸稈廢棄物處理難題,還可提高土壤速效養(yǎng)分含量、降低土壤容重,提高土壤肥力。此外,也可以將玉米、小麥、水稻等其他大田作物秸稈粉碎深翻還田,結(jié)合高溫悶棚改良土壤生態(tài)環(huán)境,促進(jìn)下茬蔬菜生長(zhǎng)發(fā)育。
 
  2.種植填閑作物。根據(jù)棚室休閑時(shí)間長(zhǎng)短,可種植玉米、小麥、豆類(lèi)、耐熱莧菜等作物并進(jìn)行秸稈還田,改善土壤生態(tài)環(huán)境,減輕病害,促進(jìn)下茬蔬菜生長(zhǎng)發(fā)育。
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