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2024年甘薯生產(chǎn)技術(shù)指導(dǎo)意見
2024-06-11
09:35:35
來源:農(nóng)業(yè)農(nóng)村部薯類專家指導(dǎo)組 全國農(nóng)業(yè)技術(shù)推廣服務(wù)中心 閱讀量:14771
評論
導(dǎo)讀:為充分發(fā)揮甘薯在穩(wěn)糧增收、提質(zhì)增效方面的作用,農(nóng)業(yè)農(nóng)村部薯類專家指導(dǎo)組會(huì)同全國農(nóng)業(yè)技術(shù)推廣服務(wù)中心提出2024年甘薯生產(chǎn)技術(shù)指導(dǎo)意見。
【農(nóng)機(jī)網(wǎng) 熱點(diǎn)關(guān)注】 當(dāng)前,甘薯產(chǎn)業(yè)呈現(xiàn)鮮食、加工及菜用消費(fèi)穩(wěn)步增加的發(fā)展態(tài)勢,為充分發(fā)揮甘薯在穩(wěn)糧增收、提質(zhì)增效方面的作用,按照“優(yōu)質(zhì)高產(chǎn)、特色專用、綠色安全”的工作思路,農(nóng)業(yè)農(nóng)村部薯類專家指導(dǎo)組會(huì)同全國農(nóng)業(yè)技術(shù)推廣服務(wù)中心提出2024年甘薯生產(chǎn)技術(shù)指導(dǎo)意見。
一、北方產(chǎn)區(qū)
(一)結(jié)合定位優(yōu)選專用壯苗。選用適宜本地種植的高產(chǎn)、穩(wěn)產(chǎn)、抗性強(qiáng),外觀品質(zhì)、食味品質(zhì)或加工品質(zhì)優(yōu)良的登記品種,并根據(jù)產(chǎn)業(yè)定位選擇鮮食型、食品加工型、淀粉加工型、特用及菜用型等專用型優(yōu)良品種。鮮食宜選擇薯形好、結(jié)薯早、商品率高、干物率適中的品種;食品加工以休閑食品為主的,宜選擇薯肉色滿足加工需求、表皮光滑、產(chǎn)量高、干物率高的品種;淀粉加工宜選擇高產(chǎn)高淀粉品種。未經(jīng)登記的品種不得推廣應(yīng)用,注意防范虛假品種廣告。推薦選用原種以上級(jí)別的健康種苗。種苗調(diào)運(yùn)需經(jīng)嚴(yán)格檢疫,有效遏制蟻象等病蟲害隨調(diào)運(yùn)擴(kuò)散蔓延。剪苗方式采用高節(jié)位剪苗,減少薯苗帶病等風(fēng)險(xiǎn),黃化皺縮、嚴(yán)重卷葉等異常苗要及時(shí)銷毀。栽插使用符合壯苗標(biāo)準(zhǔn)的健康種苗。
(二)配套機(jī)械設(shè)備科學(xué)用肥。北方產(chǎn)區(qū)平原地可采用大型田間作業(yè)機(jī)械,包括
起壟機(jī)、覆膜機(jī)、中耕除草
培土機(jī)、
打藥機(jī)、切蔓機(jī)、收獲機(jī)等,提高田間作業(yè)質(zhì)量。丘陵地選擇適合的小型配套作業(yè)機(jī)械。根據(jù)生產(chǎn)條件使用壟膜帶一體機(jī)完成松土、起壟、成型、鎮(zhèn)壓、鋪帶、覆膜、埋土等作業(yè)。按照減氮、穩(wěn)磷、增鉀原則施肥,底肥為主,追肥為輔。中低肥力地塊建議每畝施用500公斤左右的商品有機(jī)肥或1000公斤左右的農(nóng)家肥做基肥,與復(fù)合肥一起在耕翻或起壟前一次性施用。產(chǎn)量水平1500公斤/畝以下的旱薄地,推薦施用12-10-18(N-P2O5-K2O)或相近配方的硫酸鉀型緩釋復(fù)合肥(下同)30—40公斤/畝,中后期可以噴施0.2%磷酸二氫鉀+0.5%尿素1—2次。產(chǎn)量水平1500—3000公斤/畝的旱地或水澆地,推薦施用硫酸鉀型復(fù)合肥40—50公斤/畝。產(chǎn)量水平3000公斤/畝以上的水澆地,推薦施用硫酸鉀型復(fù)合肥50—60公斤/畝,薯塊膨大期隨灌水追施硫酸鉀10公斤/畝。具備滴灌或噴灌等條件的田塊,基肥用硫酸鉀型復(fù)合肥20—30公斤/畝。肥力較高的夏薯田塊可不施基肥,追肥用相似配方的水溶肥15—30公斤/畝在生育中前期隨滴灌或噴灌分2—3次施入,土壤速效鉀中等偏低的地塊可增施一次硫酸鉀5公斤左右。
(三)分類適時(shí)合理密植栽插。甘薯常壟作,一般黏土壟高30—35厘米,沙壤土壟高25—30厘米。單壟壟距80—90厘米。北方產(chǎn)區(qū)緯度跨度大,應(yīng)根據(jù)氣候條件、品種用途和市場定位選擇適宜的栽插時(shí)間,淀粉型甘薯品種盡可能早栽,延長生長期。鮮食型甘薯可根據(jù)市場需求、品種早熟特性等分期分批栽插。因地塊特點(diǎn)、薯塊用途確定合理密度:鮮食用品種可適當(dāng)增加密度(如4000—5000株/畝),控制薯形和大小。生育期短、早上市的小薯型品種可適當(dāng)降低行距增加密度。加工用品種適當(dāng)稀植(如2800—3200株/畝)。生育前期以促生長、早發(fā)苗、早封壟為重點(diǎn),在封壟前及時(shí)除草。中期以控制莖葉旺長、建立合理群體結(jié)構(gòu)為重點(diǎn),以壟頂壟溝形狀明顯可見為宜,出現(xiàn)旺長可以每畝用100克磷酸二氫鉀結(jié)合調(diào)環(huán)酸鈣·烯效唑等生長調(diào)節(jié)劑葉面噴施,或者以中耕機(jī)將溝底藤蔓截?cái)啵纳茐艤贤L(fēng)透光,減少無效藤蔓的養(yǎng)分消耗。生長后期特別注意防澇,及時(shí)排除田間積水。
(四)加強(qiáng)重點(diǎn)病蟲綜合防控。北方產(chǎn)區(qū)主要病蟲害有甘薯病毒病、根腐病、莖線蟲病、黑斑病、黑痣病、甘薯天蛾、斜紋夜蛾、甘薯潛葉蛾、甘薯麥蛾等。由于南苗北運(yùn)導(dǎo)致部分地區(qū)甘薯蟻蟓、甘薯蔓割病等南方病蟲害在北方時(shí)有發(fā)生,應(yīng)注意加強(qiáng)對薯瘟、蟻象的識(shí)別和防治。防治根腐病主要選用抗病品種、無病源地塊種植;防治莖線蟲病可采用選擇健康種苗、無病地塊種植、藥劑封閉薯苗等綜合防控技術(shù);防治黑斑病要從健康種苗抓起,選用苗床高剪健壯薯苗。要注意防控大田蠐螬、金針蟲等地下害蟲,推薦采用黑光燈誘殺成蟲等物理防治方法,適當(dāng)結(jié)合低毒農(nóng)藥化學(xué)防治,提高商品薯率。如需使用化學(xué)除草,闊葉類雜草可用封閉除草劑、對單子葉雜草可用精喹禾靈等進(jìn)行田間噴施。有條件的地方建議水旱輪作,減輕病蟲害和連作障礙。輪作要注意上茬作物專用除草劑殘留對甘薯生產(chǎn)的危害,例如煙嘧莠去津、氯吡嘧磺隆等磺酰脲類除草劑。
(五)機(jī)械收獲適時(shí)分級(jí)銷儲(chǔ)。提倡機(jī)械化收獲。鮮食用甘薯密切關(guān)注市場行情,調(diào)整栽插期和收獲期,分期收獲,做好包裝銷售、貯藏后銷售等,避免盲目擴(kuò)種、集中上市。夏季收獲注意及時(shí)收儲(chǔ),防止田間燙傷薯塊,應(yīng)盡快銷售,減少儲(chǔ)藏成本。秋季收獲需選擇晴好天氣,上午收刨,經(jīng)過田間晾曬,當(dāng)天下午貯存,要注意做到輕刨、輕裝、輕運(yùn)、輕卸,要用塑料周轉(zhuǎn)箱或條筐裝運(yùn),防止破傷。盡量在霜前完成收獲,避免凍害。加工用甘薯要根據(jù)企業(yè)需求做好收獲和貯藏工作。有條件的區(qū)域進(jìn)行高溫愈合處理。貯藏庫保持環(huán)境溫度10—13℃、濕度85%左右,具體窖溫、濕度根據(jù)貯藏品種特性確定。貯藏量一般占窖空間的三分之二,注意通氣,保證適當(dāng)空氣流動(dòng)。切忌雨天、霜凍后入庫貯藏。規(guī)范甘薯貯藏期農(nóng)藥使用,盡量選擇生物制劑,保障食品安全。種薯提倡38℃左右快速愈合3天后貯藏。
二、南方產(chǎn)區(qū)
(一)栽插健康壯苗。根據(jù)當(dāng)?shù)赝寥?、氣候條件、種植目的、營銷方式等因素,選用適宜的優(yōu)質(zhì)專用甘薯品種。推薦選用原種以上級(jí)別的脫毒種苗。種苗調(diào)運(yùn),需經(jīng)嚴(yán)格檢疫,未經(jīng)檢疫的薯苗不可調(diào)運(yùn)。剪苗方式采用高節(jié)位剪苗,減少薯苗帶病等風(fēng)險(xiǎn),黃化皺縮、嚴(yán)重卷葉等異常苗要及時(shí)銷毀。栽插符合壯苗標(biāo)準(zhǔn)的健康種苗。
(二)起壟合理密植。根據(jù)地塊、品種等確定合理的栽插密度,一般建議在3000—4000株。南方夏秋薯區(qū)利用冬閑田種植夏薯的可提前起壟,非冬閑田在降雨間隙搶時(shí)起壟。有條件的地方建議水旱輪作,或與花生、玉米等旱作作物輪作,以減輕病蟲害和連作障礙,實(shí)現(xiàn)增產(chǎn)增效。
(三)科學(xué)施肥增效。堅(jiān)持測土配方施肥,推廣使用甘薯專用肥。施肥原則為減氮、穩(wěn)磷、增鉀,基肥為主、追肥為輔,有機(jī)肥為主、化肥為輔。丘陵山地等瘠薄地塊建議每畝施用500公斤左右的商品有機(jī)肥或1000公斤左右的農(nóng)家肥做基肥,與復(fù)合肥一起耕翻或起壟前一次性施用。產(chǎn)量水平1500公斤/畝以下的旱薄地,推薦施用硫酸鉀型緩釋復(fù)合肥15—20公斤/畝;封壟前追施硫酸鉀5—10公斤/畝,中后期根據(jù)苗情用含中微量元素葉面肥噴施1—2次。產(chǎn)量水平1500—2500公斤/畝的地塊,推薦施用硫酸鉀型緩釋復(fù)合肥15—20公斤/畝;封壟前追施硫酸鉀10—15公斤/畝,中后期根據(jù)苗情用含中微量元素葉面肥噴施1—2次。產(chǎn)量水平2500公斤/畝以上的地塊,推薦施用硫酸鉀型緩釋復(fù)合肥15—25公斤/畝;封壟前追施硫酸鉀15—20公斤/畝,中后期根據(jù)苗情用含中微量元素葉面肥噴施1—2次。實(shí)施水肥一體化技術(shù)的田塊,基肥用硫酸鉀型緩釋復(fù)合肥20—30公斤/畝,肥力較高的田塊可不施基肥。追肥用硫酸二氫鉀15—25公斤/畝在生育中前期隨滴灌或噴灌分2—3次施入,中后期根據(jù)苗情可以用含中微量元素的葉面肥噴施1—2次。
(四)加強(qiáng)田管增效。栽插時(shí)一次性澆透定根水,以促早發(fā)苗、早封壟。中后期以促進(jìn)薯塊膨大為重點(diǎn),可根據(jù)實(shí)際情況,適當(dāng)控旺。生長后期特別注意防澇,及時(shí)排除田間積水。食品加工和淀粉加工用甘薯應(yīng)適當(dāng)早栽提高單產(chǎn)。緩坡地區(qū)根據(jù)地形、坡度等選擇適合的小型配套作業(yè)機(jī)械,地勢平坦地區(qū)可采用大型田間作業(yè)機(jī)械,包括起壟機(jī)、覆膜機(jī)、中耕除草培土機(jī)、切蔓機(jī)、收獲機(jī)等,提高田間作業(yè)質(zhì)量,減輕勞動(dòng)強(qiáng)度,節(jié)約用工成本。
(五)病蟲防控結(jié)合。杜絕栽插病毒苗,控制甘薯SPVD復(fù)合病毒和卷葉病毒危害;根腐病、薯瘟病等無有效藥劑防治的病害,要選用抗病品種、選擇無病地塊種植;黑斑病可選用苗床高剪健壯薯苗,栽插前用適宜藥劑處理;杜絕超劑量使用農(nóng)藥;要注意防控大田蠐螬、金針蟲等地下害蟲,推薦采用黑光燈誘殺成蟲等物理防治方法,適當(dāng)結(jié)合低毒農(nóng)藥化學(xué)防治,提高商品薯率;南方產(chǎn)區(qū)要采取綜合措施,防止蟻象為害。規(guī)范甘薯貯藏期化學(xué)藥劑使用,盡量選擇生物制劑,保障食品安全。
(六)適期收獲銷售。及時(shí)了解市場行情,防止盲目引種、擴(kuò)種;采取分級(jí)銷售、包裝銷售、有條件的區(qū)域可做收獲后高溫愈合、糖化等品質(zhì)提升等工作,以提高銷售價(jià)格、增加產(chǎn)值,提高種植效益。
三、菜用甘薯
(一)科學(xué)選用品種。菜用甘薯專用品種具有耐高溫高濕、耐病蟲、營養(yǎng)價(jià)值高、口感好的特點(diǎn),是夏季“伏缺菜”的重要選擇。根據(jù)各地消費(fèi)習(xí)慣,選擇具有莖葉生長快、再生能力強(qiáng)、莖尖茸毛少、無苦澀味、口感嫩滑等特點(diǎn)的菜用甘薯專用品種。選用通過國家或地方登記的優(yōu)質(zhì)菜用甘薯品種,未經(jīng)登記的品種不推薦種植。
(二)繁育健康種苗。根據(jù)品種結(jié)薯習(xí)性,菜用甘薯育苗分為薯塊育苗和保護(hù)地保苗育苗兩種方式。薯塊育苗,保持苗床相對濕度80%、最低溫度15—18℃,60%左右薯塊出芽時(shí)床溫保持18℃以上,超過35℃及時(shí)通風(fēng)降溫。薯苗高度15—20厘米時(shí)剪苗栽插。保護(hù)地保苗育苗,要在溫室大棚保存植株,氣溫回升或加溫條件下促進(jìn)正常生長,剪取新發(fā)側(cè)枝扦插擴(kuò)繁。保護(hù)地保苗育苗特別要注意基礎(chǔ)苗定期更新,不能連續(xù)多年使用。種苗繁育過程中應(yīng)注意防止薯塊和土壤病菌傳播,防止蚜蟲傳播病毒病。
(三)控制規(guī)模種植。菜用甘薯貨架期短,選擇距市場近的城郊種植為宜。田間采收勞動(dòng)用工量大,應(yīng)根據(jù)市場容量、勞動(dòng)力情況適度規(guī)模種植,不宜盲目擴(kuò)種。根據(jù)氣候特點(diǎn)、設(shè)施結(jié)構(gòu)性能、栽培模式、市場需求預(yù)測和病蟲害發(fā)生規(guī)律,合理安排適宜的種植期和茬口。露地栽培避開氣象災(zāi)害和病蟲害高發(fā)期,防止栽插期過于集中。設(shè)施栽培注意按照目標(biāo)市場蔬菜價(jià)格變化規(guī)律、當(dāng)?shù)囟簹夂蛱攸c(diǎn)和不同棚室的結(jié)構(gòu)性能,安排秋冬茬、冬春茬生產(chǎn)及品種結(jié)構(gòu),調(diào)控上市時(shí)間。
(四)加強(qiáng)田間管理。選擇肥力較好、排灌方便、土層深厚、疏松通氣、富含有機(jī)質(zhì)的地塊,整畦起溝栽培,畦面寬度80—100厘米、溝深30厘米。以有機(jī)肥作基肥,選用莖蔓粗壯、老嫩適度、節(jié)間較短、葉片肥厚、無氣生根、無病蟲害、帶心葉的頂端壯苗進(jìn)行扦插,畝扦插密度壟作不低于8000株,畦作不低于12000株。成活后生長最適溫度18—38℃,每天早晚噴水1—2次,苗長15厘米以上進(jìn)行打頂促分枝。病蟲害防治應(yīng)遵循“預(yù)防為主、綜合防治”的原則,結(jié)合農(nóng)業(yè)防治、物理防治和生物防治等手段,合理使用高效、低毒、低殘留的化學(xué)農(nóng)藥。一般可采用防蟲網(wǎng)結(jié)合吸蟲機(jī)和生物農(nóng)藥防蟲,減少使用化學(xué)農(nóng)藥。
(五)適時(shí)修剪采收。菜用甘薯從封壟至收獲薯塊前半個(gè)月都可采摘,根據(jù)市場供求情況分批采收,一般每7—10天可采收1次,注意防止葉片萎蔫脫水。上午10時(shí)之前為最佳口感采收期。采摘完莖葉的長蔓應(yīng)及時(shí)修剪,保留20厘米以內(nèi)的分枝,保證養(yǎng)分充足供應(yīng),促進(jìn)植株分枝及新葉生長。還可通過清洗、漂燙、速凍等加工工藝措施,開發(fā)速凍蔬菜,延長市場供應(yīng)期。
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