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全國(guó)農(nóng)技中心印發(fā)《小麥水肥一體化單產(chǎn)提升技術(shù)方案》
2024-04-23
08:32:52
來(lái)源:全國(guó)農(nóng)業(yè)技術(shù)推廣服務(wù)中心 閱讀量:14959
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導(dǎo)讀:水肥一體化技術(shù),向根區(qū)土壤適時(shí)適量、集中高效供應(yīng)水分和養(yǎng)分,及時(shí)有效滿足作物水肥需求,是實(shí)現(xiàn)小麥密植、水肥精準(zhǔn)調(diào)控,支撐小麥單產(chǎn)提升的關(guān)鍵舉措。
【農(nóng)機(jī)網(wǎng) 科技創(chuàng)新】 小麥生育期長(zhǎng),不同時(shí)期對(duì)水肥需求不同,科學(xué)精準(zhǔn)的水肥供給是滿足小麥高產(chǎn)的關(guān)鍵。水肥一體化技術(shù),向根區(qū)土壤適時(shí)適量、集中高效供應(yīng)水分和養(yǎng)分,及時(shí)有效滿足作物水肥需求,是實(shí)現(xiàn)小麥密植、水肥精準(zhǔn)調(diào)控,支撐小麥單產(chǎn)提升的關(guān)鍵舉措。為推進(jìn)小麥大面積單產(chǎn)提升,服務(wù)新一輪千億斤糧食產(chǎn)能提升工程,全國(guó)農(nóng)技中心特制定本方案。
適宜區(qū)域及技術(shù)效果
適宜有水源條件的小麥產(chǎn)區(qū),主要包括華北黃淮灌溉冬麥區(qū)、長(zhǎng)江中下游冬麥區(qū)、西北灌溉麥區(qū),及其他有補(bǔ)充灌溉能力的小麥種植區(qū)。主要采用地表滴灌、淺埋滴灌、地埋滲灌、
微噴帶噴灌、地埋伸縮式噴灌、固定和半固定式噴灌等水肥一體化技術(shù)模式,探索噴肥車、無(wú)人機(jī)等變量精準(zhǔn)噴肥實(shí)現(xiàn)一噴多促,配套高效水溶肥、營(yíng)養(yǎng)診斷施肥、耐密抗倒品種、北斗導(dǎo)航播種、化控防倒和病蟲草防控等措施。利用水肥一體化解決傳統(tǒng)種植前期水肥供應(yīng)不均勻?qū)е鲁雒绮粍虿积R問(wèn)題,中后期水肥供應(yīng)跟不上導(dǎo)致密群體弱個(gè)體、穗小粒輕等問(wèn)題,實(shí)現(xiàn)小麥“群體足、個(gè)體壯、穗大籽多粒飽”,協(xié)同提升水肥效率和小麥單產(chǎn),與當(dāng)?shù)爻R?guī)水肥管理相比,力爭(zhēng)單產(chǎn)和水分生產(chǎn)力均提高10%以上。
不同區(qū)域技術(shù)要點(diǎn)
(一)華北黃淮及汾渭平原灌溉冬麥區(qū)。主要包括北京、天津、河北、河南、山東、蘇皖兩省淮河以北地區(qū)、陜西關(guān)中和山西汾河谷地等區(qū)域冬小麥,適宜采用地面滴灌、淺埋滴灌、地埋滲灌、地埋可伸縮噴灌、微噴帶噴灌、半固定式噴灌等方式實(shí)現(xiàn)冬小麥水肥一體化。
1. 精細(xì)整地。玉米秸稈粉碎兩遍高質(zhì)量還田,旋耕兩遍、深度15厘米以上,連年旋耕地塊一般每3年深松1次,深度35厘米以上,打破犁底層。耕后趁墑耙地,做到耕層上虛下實(shí),地面平整、無(wú)明顯土塊。鹽堿地塊要減少深翻作業(yè),以免影響出苗。結(jié)合整地,施入底肥,一般全生育期氮肥30%—40%、磷肥100%、鉀肥60%—70%底施。建議選擇小麥專用配方肥,有條件區(qū)域增施有機(jī)肥,培肥地力,提高土壤蓄水保墑能力。全生育期施氮(N)15—16公斤/畝,磷(P2O5)8—10公斤/畝,鉀(K2O)5—6公斤/畝。
2. 科學(xué)選種及包衣。選用通過(guò)國(guó)家和本省審定,適宜在當(dāng)?shù)胤N植的節(jié)水耐旱、高產(chǎn)穩(wěn)產(chǎn)、抗病抗逆的冬小麥品種。避免選用抗寒能力弱的春性品種和自留種。小麥種子要經(jīng)過(guò)包衣處理,或者根據(jù)種植區(qū)域常發(fā)病蟲害進(jìn)行藥劑拌種。如選用含有苯醚甲環(huán)唑、咯菌腈、戊唑醇、噻呋酰胺、丙環(huán)唑等成分的單劑或復(fù)配制劑,防治小麥莖基腐病、紋枯病、根腐病等根莖部病害;用辛硫磷等藥劑拌種,防治地老虎、金針蟲、蠐螬等地下害蟲。
3. 精量播種。一是適墑播種。小麥播種時(shí)耕層的適宜墑情為土壤相對(duì)含水量75%左右。要適墑播種,確保一播全苗。若墑情不足,需提前造墑或播后滴水出苗。冬小麥的播種深度控制在3—5厘米。二是適期播種。過(guò)早播種易形成冬前旺苗,增大凍害風(fēng)險(xiǎn),可在當(dāng)?shù)剡m宜播期內(nèi)稍晚播種。三是適量播種。一般高產(chǎn)攻關(guān)田塊畝基本苗15萬(wàn)—18萬(wàn),按照“斤籽萬(wàn)苗”一般規(guī)律,結(jié)合生態(tài)區(qū)域特點(diǎn),肥力正常地塊播種量建議10—15公斤/畝;晚于適宜播種期播種的,每晚播1天,每畝增加播種量0.5公斤。播后1—3天適時(shí)鎮(zhèn)壓。建議在小麥播種時(shí)選用帶有鋪設(shè)
滴灌帶(管)功能的北斗導(dǎo)航
播種機(jī)一次性完成播種鋪管作業(yè)。
4. 水肥一體化系統(tǒng)。主要由水源、首部樞紐、輸配水管網(wǎng)和滴灌帶(管)組成。滴灌設(shè)備的規(guī)格和型號(hào)根據(jù)生產(chǎn)實(shí)際進(jìn)行選擇,滴灌灌水器間距一般為30厘米、出水量在1—2.5升/小時(shí)之間。首部樞紐包括加壓、過(guò)濾和灌溉施肥智能決策等設(shè)施設(shè)備。田間輸配水管網(wǎng)應(yīng)根據(jù)所選擇的水肥一體化技術(shù)模式,嚴(yán)格按照相關(guān)技術(shù)和參數(shù)要求,科學(xué)進(jìn)行布設(shè)。如淺埋滴灌帶在黏土或壤土地埋深2—3厘米,砂土地埋深4—5厘米;地埋滲灌主、干、支管的埋深不小于60厘米,毛管埋深多在25—35厘米,不影響機(jī)械旋耕作業(yè)即可。
5. 灌溉施肥策略。該區(qū)域冬小麥生長(zhǎng)發(fā)育需水量和降水吻合度差,需依據(jù)土壤墑情和作物生長(zhǎng)需求進(jìn)行灌溉施肥,實(shí)現(xiàn)水肥精準(zhǔn)調(diào)控。一是小麥播前造墑。為配合前茬夏玉米晚收增產(chǎn)增效,可在玉米灌漿后期采用“一水兩用”技術(shù),即在玉米收前每畝滴水25—30方,等到田間土壤適耕時(shí),機(jī)械收獲玉米,并精細(xì)整地,趁墑播種小麥。二是精準(zhǔn)調(diào)控。小麥全生育期滴灌或噴灌3—5次,每次灌水量10—30方/畝,灌溉定額每畝約90—150方。起身、拔節(jié)、孕穗和灌漿是冬小麥水肥需求關(guān)鍵期,70%的氮肥及30%鉀肥分2—3次在小麥起身拔節(jié)至灌漿期隨水追施。石灰性土壤或缺鋅地塊追施硫酸鋅1公斤/畝。
6. 其他配套措施。一是雜草秋治,重點(diǎn)防治雀麥、節(jié)節(jié)麥等禾本科惡性雜草和薺菜等闊葉雜草。二是鎮(zhèn)壓控旺,對(duì)于旺長(zhǎng)麥田在冬前和早春返青后進(jìn)行鎮(zhèn)壓,控旺防倒。三是早春病蟲草害防治,重點(diǎn)是莖基腐病、紋枯病、根腐病等病害防控與返青期闊葉雜草的防治。四是合理化控,對(duì)旺長(zhǎng)麥田和適度增密麥田,在起身期前后噴施化控藥劑。五是“倒春寒”預(yù)防,可在降溫前灌水,或降溫凍害后巧施肥水、噴施葉面肥等降低凍害影響。六是做好“一噴三防”,選用低毒高效藥劑和生長(zhǎng)調(diào)節(jié)劑、葉面肥科學(xué)混配噴施,防病蟲,防早衰,防干熱風(fēng),增粒重。
(二)長(zhǎng)江中下游冬麥區(qū)。主要包括湖北、湖南、江西、浙江和上海五省市,河南省南部,安徽和江蘇兩省淮河以南地區(qū)。本區(qū)域水資源豐富,降水量相對(duì)豐沛,小麥田塊多丘陵崗地,可采取軟管輸水(小白龍)+小畦灌溉,或低壓微噴帶、小型移動(dòng)式、固定和半固定式噴灌等實(shí)現(xiàn)冬小麥水肥一體化。
1. 提高整地質(zhì)量。稻茬小麥于水稻收獲前7—10天及時(shí)放水曬田,水稻留茬及秸稈要粉碎徹底,提高秸稈還田質(zhì)量,耕翻后應(yīng)及時(shí)耙實(shí)、鎮(zhèn)壓,使土壤細(xì)碎,上松下實(shí),底墑充足,防止水分散失。
2. 科學(xué)選種包衣。該區(qū)域生態(tài)條件多樣,宜選擇經(jīng)過(guò)審定且適宜當(dāng)?shù)貧夂驐l件,尤其是抗?jié)?、抗病和穩(wěn)產(chǎn)性良好的品種;落實(shí)種子包衣、藥劑拌種技術(shù),合理選用殺菌劑和殺蟲劑混用配方進(jìn)行拌種,最大限度減少“白籽”下地比例。
3. 適墑適期播種。播種時(shí)耕層適宜土壤相對(duì)含水量為70%—80%,長(zhǎng)江中游的北部地區(qū)適宜播期為10月20日至30日,南部地區(qū)適宜播期為10月25日至11月5日;長(zhǎng)江下游地區(qū)宜集中于10月下旬至11月上旬播種。
4. 灌溉施肥策略。該區(qū)域降水充沛,水源多為山塘、水庫(kù)、湖泊、江河等,可結(jié)合降水或灌水,進(jìn)行追肥,實(shí)現(xiàn)水肥耦合一體管理。產(chǎn)量水平500公斤/畝以上地塊,冬小麥配方肥推薦用量40—45公斤/畝作基肥,起身期到拔節(jié)期結(jié)合灌水追施尿素12—20公斤/畝、氯化鉀3—5公斤/畝。在一些微量元素缺乏的地區(qū),可結(jié)合病蟲草害防治,在小麥拔節(jié)期、孕穗期和灌漿期噴施微量元素水溶肥;如遇特殊天氣導(dǎo)致的晚播、弱苗和未施肥田塊,宜在冬灌或冬季降水時(shí)因苗情和產(chǎn)量水平,提早追施尿素5—7公斤/畝、磷酸二銨5—6公斤/畝。強(qiáng)中筋小麥適當(dāng)增加氮肥用量和后期追肥。
5. 其他配套措施。一是三溝配套。稻茬麥區(qū)水稻田要開(kāi)好排水溝,確保內(nèi)外三溝相通,排灌通暢,降漬防旱。并注意控制好最后上水時(shí)間,為小麥耕作播種創(chuàng)造好的墑情條件。二是病蟲害防治,重點(diǎn)是以赤霉病、銹病、紋枯病、白粉病、麥蚜為主,兼顧黑穗病、黃花葉病、黃矮病、麥蜘蛛等病蟲害,注意小麥莖基腐病發(fā)生情況。三是“倒春寒”預(yù)防,可在降溫前灌水,或降溫凍害后巧施肥水、噴施葉面肥等降低凍害影響。四是做好“一噴三防”,選用低毒高效藥劑和生長(zhǎng)調(diào)節(jié)劑、水溶肥料科學(xué)混配噴施,預(yù)防干熱風(fēng),提高灌漿強(qiáng)度,促大穗增粒重。
(三)西北內(nèi)陸灌溉麥區(qū)。包括內(nèi)蒙古自治區(qū)中部,寧夏回族自治區(qū)北部,甘肅省中西部,青海省東部和新疆維吾爾自治區(qū)。本區(qū)域降水量少、蒸發(fā)量較大,適宜推廣地面滴灌、淺埋滴灌等水肥一體化技術(shù),按照“增密、降高、精準(zhǔn)調(diào)控”思路構(gòu)建高產(chǎn)小麥群體。
1. 選配品種及科學(xué)包衣。針對(duì)灌區(qū)氣候特點(diǎn)、栽培管理水平等情況,選擇抗寒能力中等以上,抗旱、抗倒伏、抗病性強(qiáng),綜合性好的品種。播前種子包衣,包衣劑可用含有黏結(jié)劑的殺蟲劑、殺菌劑、復(fù)合肥料、微量元素、植物生長(zhǎng)調(diào)節(jié)劑等配合制劑,為高產(chǎn)打下基礎(chǔ)。
2. 精細(xì)整地。前茬作物收獲后及時(shí)旋耕20厘米以上,精細(xì)整地,達(dá)到犁條直、垡塊松碎,播種前精細(xì)耙耱,整地質(zhì)量達(dá)到“齊、平、松、碎、凈”五字標(biāo)準(zhǔn)。連年旋耕地塊一般每3年深松1次,深度35厘米以上,打破犁底層。
3. 抓好播種質(zhì)量。適期適墑播種,冬小麥要確保入冬前形成1—2個(gè)大分蘗。不同品種小麥播種量要根據(jù)分蘗成穗特性、播種方式、種子質(zhì)量、土壤地力等統(tǒng)籌,建議每畝播量為18—25公斤。播種采用一條龍作業(yè),播種、鋪設(shè)滴灌帶(管)一次性完成,建議北斗導(dǎo)航播種,小麥平均行距15厘米,滴灌帶鋪設(shè)在土壤1—2厘米深處,增強(qiáng)防風(fēng)能力。
4. 水肥一體化系統(tǒng)。主要有水源、首部樞紐、輸配水管網(wǎng)和滴灌帶(管)組成。首部樞紐中過(guò)濾器宜選擇旋流分砂器和篩網(wǎng)過(guò)濾器組合配套使用,過(guò)濾掉灌溉水中泥沙。滴灌帶(管)間距以60厘米為宜,出水量在1—2.5升/小時(shí)之間,滴灌灌水器距離20—30厘米,一般1條滴灌帶控制灌溉4行小麥。
5. 灌溉施肥策略。滴水出苗,保證出苗整齊一致。根據(jù)小麥的水肥需求規(guī)律,做好水肥精準(zhǔn)調(diào)控。一般冬小麥全生育期灌水7—8次(包括出苗水),春小麥全生育期灌水6—7次(包括出苗水),灌溉定額250—300方,隨水施肥4—6次。高產(chǎn)小麥全生育期每畝氮肥(N)推薦施用量為13—19公斤,磷肥(P2O5)為6—9公斤,鉀肥(K2O)為4—7公斤。少量的氮鉀、大部分磷肥可在播種前做底肥施入。追肥以尿素、磷酸一銨和硫酸鉀等水溶性肥料為主。
6. 其他配套措施。一是科學(xué)化控。對(duì)于旺長(zhǎng)麥田和易倒伏品種,可在小麥起身至拔節(jié)期,每畝用50%的矮壯素水劑200—300毫升兌水30公斤噴施。二是病蟲害綜合防治。選用吡唑醚菌酯、戊唑醇、苯醚甲環(huán)唑防治條銹病、白粉病、赤霉病,選用啶蟲脒、吡蟲啉防治蚜蟲,抽穗至灌漿期結(jié)合化防噴施葉面肥2次。三是做好“一噴三防”。選用低毒高效藥劑和生長(zhǎng)調(diào)節(jié)劑、水溶肥料科學(xué)混配噴施,預(yù)防干熱風(fēng),提高灌漿強(qiáng)度,增加粒重。
重點(diǎn)任務(wù)
(一)開(kāi)展技術(shù)集成示范。在具有節(jié)水灌溉條件區(qū)域,大力推廣應(yīng)用小麥水肥一體化技術(shù),將高效節(jié)水灌溉設(shè)備優(yōu)勢(shì)轉(zhuǎn)化為實(shí)際的糧食產(chǎn)能優(yōu)勢(shì)。結(jié)合綠色高產(chǎn)高效、單產(chǎn)提升工程等項(xiàng)目,集中連片開(kāi)展小麥水肥一體化提單產(chǎn)創(chuàng)高產(chǎn)技術(shù)集成示范。
(二)集成區(qū)域技術(shù)模式。整合科教單位、企業(yè)等資源,圍繞不同灌溉方式、灌水量、施肥量等進(jìn)行對(duì)比,優(yōu)化技術(shù)參數(shù),配套品種、栽培等措施,集成屬地化的小麥水肥一體化技術(shù)模式,提高技術(shù)針對(duì)性和實(shí)用性,實(shí)現(xiàn)水肥效率和單產(chǎn)雙提升目標(biāo)。
(三)開(kāi)展技術(shù)指導(dǎo)培訓(xùn)。將水肥一體化技術(shù)作為適宜區(qū)域小麥提單產(chǎn)創(chuàng)高產(chǎn)的主推技術(shù),動(dòng)員各級(jí)農(nóng)技推廣人員、科研院校專家、社會(huì)化服務(wù)組織等深入生產(chǎn)一線,及時(shí)開(kāi)展技術(shù)指導(dǎo),幫助農(nóng)民解決生產(chǎn)問(wèn)題。線上線下多種形式舉辦技術(shù)培訓(xùn),講解技術(shù)關(guān)鍵要點(diǎn),提高農(nóng)技人員和農(nóng)民高效節(jié)水灌溉技能。
(四)積極做好宣傳引導(dǎo)。對(duì)成效突出區(qū)域組織測(cè)產(chǎn),積極總結(jié)效果明顯、推廣性強(qiáng)的技術(shù)模式和經(jīng)驗(yàn)做法,組織或邀請(qǐng)主流媒體開(kāi)展系列宣傳,加強(qiáng)區(qū)域交流,營(yíng)造小麥水肥一體化提單產(chǎn)良好輿論氛圍,提高農(nóng)戶對(duì)技術(shù)的認(rèn)知。
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