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地點(diǎn): 西安市
開展時(shí)間: 2025-03-13
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開展時(shí)間: 2025-03-14
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2024年黑龍江省主要農(nóng)作物備春耕生產(chǎn)技術(shù)意見
2024-03-11
08:53:52
來源:黑龍江省農(nóng)業(yè)技術(shù)推廣站 閱讀量:13745
評論
【農(nóng)機(jī)網(wǎng) 地方農(nóng)機(jī)】 據(jù)省氣象部門預(yù)測,2024年我省春季終霜凍正常,氣溫正常,溫度條件利于備春耕活動(dòng)的開展,4月下旬0-10厘米土層大部農(nóng)區(qū)墑情正常,松嫩平原西部易旱區(qū)出現(xiàn)干旱風(fēng)險(xiǎn)較大,三江平原大部、哈爾濱東部、牡丹江大部農(nóng)田土壤偏澇風(fēng)險(xiǎn)較大。綜合上述因素,為確保旱田一次播種保全苗,水田做好早扣棚、防病害、促壯苗等工作,從栽培角度,以“抗旱澇、搶農(nóng)時(shí)、保春種、促全苗”為重點(diǎn),特提出2024年備春耕生產(chǎn)技術(shù)建議。
旱田:
一、合理輪作
在優(yōu)化結(jié)構(gòu)的基礎(chǔ)上,根據(jù)前茬作物種類及用藥情況,合理調(diào)茬,減少連作、重茬,有條件的地區(qū)實(shí)行“米-雜-米、米-經(jīng)-米、米-豆-麥、米-豆-薯、米-油-米”等輪作。為降低除草劑危害, 凡種植敏感作物的,可以使用蕓苔素內(nèi)酯、碧護(hù)等植物生長調(diào)節(jié)劑拌種或苗期葉噴。
二、高標(biāo)準(zhǔn)整地
總體以保住土壤墑情、少動(dòng)土為原則。簡化整地,對去年進(jìn)行深翻秸稈還田的黑色越冬地塊,在土層化到7-8厘米時(shí),先行用耢子進(jìn)行頂凌封墑作業(yè),待化到15-18厘米再進(jìn)行耙地、起壟、鎮(zhèn)壓連續(xù)作業(yè),確保墑情。對秋整地起壟地塊,在土壤化凍3-5厘米時(shí),進(jìn)行頂凌鎮(zhèn)壓,防止跑墑。對于土壤墑情適宜,秋季未整地但春季達(dá)到整地標(biāo)準(zhǔn)的,待土壤化凍10-15厘米時(shí),深松、耙、耢、起壟、鎮(zhèn)壓連續(xù)作業(yè),避免跑墑。對于干旱地塊,采取滅茬播種或保持原壟,播種時(shí)采用原壟卡種。
三、做好種子精選及處理
1、調(diào)優(yōu)品種。在品種選擇上,要按照《2024年全省農(nóng)作物優(yōu)質(zhì)高效品種種植區(qū)劃布局指導(dǎo)意見》的要求,一方面根據(jù)當(dāng)?shù)厣鷳B(tài)條件,選擇審定推廣的熟期適宜、抗逆性強(qiáng)的優(yōu)質(zhì)高產(chǎn)品種。
2、做好曬種和芽率試驗(yàn)。播前做好種子精選、晾種、提高種子發(fā)芽率,同時(shí)做好種子發(fā)芽試驗(yàn),選用發(fā)芽勢和發(fā)芽率均高的種子播種,對發(fā)芽率低的種子應(yīng)及時(shí)調(diào)劑更換品種。
3、實(shí)行種子包衣。依據(jù)當(dāng)?shù)夭?、蟲、鼠害發(fā)生情況進(jìn)行種子包衣或藥劑拌種,避免白籽下地,使用時(shí)一定要注意掌握好劑量,避免出現(xiàn)藥害和藥物浪費(fèi)。
四、搶墑適時(shí)播種
根據(jù)地溫和不同土壤水分狀況,做到因地制宜,采用靈活的播種方式播種,力爭5月20日結(jié)束大田播種,切實(shí)把各種農(nóng)作物都種在豐產(chǎn)期。
1、墑情適宜的地塊提倡早播,凡是墑情適宜,地溫達(dá)到播種條件的,一定要適時(shí)早播、搶播,把作物種在最佳播種期內(nèi)。
2、對于干旱地塊,可采用適時(shí)“搶墑”、深種淺蓋“接墑”和坐(濾)水種增墑等技術(shù)播種,不具備條件的,可原壟種植。
3、對于春澇地塊,千萬不能濕耕濕種,可等地干,適時(shí)晚播密植,避免粉種。播種時(shí)可采取大壟種植,適當(dāng)淺播淺種,促進(jìn)早出苗。
4、嚴(yán)把播種質(zhì)量關(guān),做到精細(xì)播種、用種精量、下籽均勻、深淺一致、覆土嚴(yán)密,保住群體,靠群體穩(wěn)產(chǎn)。
5、依據(jù)栽培模式、品種特性,科學(xué)合理確定種植密度。玉米:常規(guī)栽培3800-4000株/畝,密植栽培4200-4500株/畝,四積溫帶以北常規(guī)栽培達(dá)到4500株/畝以上,密植5500-6500株/畝。大豆:中南部地區(qū),畝保苗株數(shù)為1.6-1.86萬株;北部、西部干旱區(qū)或瘠薄地塊,畝保苗株數(shù)1.86-2.3萬株;窄行密植,中南部地區(qū)畝保苗2-2.2萬株,北部地區(qū)畝保苗2.4-3萬株。
五、強(qiáng)化苗期鏟趟管理
1、早查田早補(bǔ)種(栽)保全苗。播種后出苗前,應(yīng)進(jìn)行查田,詳細(xì)調(diào)查田間粉種及缺苗情況,提早進(jìn)行育苗,以備補(bǔ)栽之用,或借苗帶土移栽。
2、早鏟早趟放寒增溫。幼苗拱土后要早趟鏟早中耕,做到多鏟、多趟,通過土壤深松和鏟趟管理,實(shí)現(xiàn)放寒增溫促進(jìn)作物生長發(fā)育。
六、科學(xué)精準(zhǔn)施肥
通過調(diào)配方、增施有機(jī)肥、多種施肥方法相結(jié)合等科學(xué)精準(zhǔn)施肥,提高肥料利用率,適當(dāng)降低化肥用量。
1、有機(jī)肥。玉米每畝施用含有機(jī)質(zhì)15%以上的農(nóng)肥2-2.5噸,大豆1.5-2噸,結(jié)合整地撒施或條施夾肥。
2、種肥。根據(jù)土壤供肥能力和土壤養(yǎng)分平衡狀況,測土配方施肥。玉米一般每畝施用磷酸二銨11-15公斤、氯化鉀4-6公斤、尿素5-6公斤;大豆畝施尿素2.5-3.5公斤、磷酸二銨8-10公斤,硫酸鉀3-5公斤,隨播種施在種子下側(cè)5-6厘米、深度5-6厘米處。
3、追肥。玉米在6-7片葉時(shí),結(jié)合鏟趟畝追尿素15-20公斤,要做到側(cè)深追肥,側(cè)10-12厘米,深10-15厘米;大豆初花期每畝用尿素0.3-0.5公斤加磷酸二氫鉀0.2公斤葉面噴施。
水田:
一、精選種子,嚴(yán)格種子處理
選擇審定推廣熟期適宜的優(yōu)質(zhì)高產(chǎn)抗逆性強(qiáng)的品種,提前做好種子的清選和曬種工作,建議采用比重為1.13的鹽水選種,剔除不飽滿的種子,并提前做好發(fā)芽試驗(yàn),要確保芽率。嚴(yán)格進(jìn)行種子處理,要保證足夠的藥液濃度,藥液液面要高出種子15cm以上,并做到充分消毒,浸種藥液不可重復(fù)使用,有條件的可先進(jìn)行種衣劑包衣再浸種。
二、及早清除大棚區(qū)積雪,提前扣棚
要及時(shí)把苗床及育秧棚室周圍的積雪清出棚區(qū),盡可能遠(yuǎn)離育苗棚室堆放,防止雪水回流。對積雪厚、積雪深的大棚育苗小區(qū),充分利用機(jī)械及早清雪,為適時(shí)育苗爭取主動(dòng)。地勢低洼的大棚育秧小區(qū)或苗床,大棚四周要挖排水溝,同時(shí)防止外水進(jìn)來,積水苗床要挖坑掏水,降低苗床濕度,保證旱育苗標(biāo)準(zhǔn)不降低。在清除大棚積雪的同時(shí),在播種前15天左右扣棚,促進(jìn)土壤解凍。
三、應(yīng)用客土或?qū)S脿I養(yǎng)土育苗,要確保床土質(zhì)量
床土要求結(jié)構(gòu)疏松,養(yǎng)分全,有機(jī)質(zhì)含量高,無草籽,無長殘效農(nóng)藥,無鹽堿。提倡秋備床土,秋季未備育苗土的要盡早選擇肥沃旱田地、山地土或腐熟的草炭土或崗地水田取土。取凍土可在大棚內(nèi)集中增溫化凍晾干。
四、精細(xì)做床
做床好壞直接關(guān)系到播種質(zhì)量、出苗整齊度和秧田管理,提倡秋做床,未及時(shí)秋做床的也可以春做床。做床要旱整地、旱做床、早找平,再施入適量的優(yōu)質(zhì)腐熟農(nóng)家肥或商品有機(jī)肥。要求床面平整、細(xì)碎、無坷垃,且排水良好。
五、苗床消毒
由于春季降雨、融雪等因素影響,苗床濕度較大,而且育苗期間常常溫度較低,易出現(xiàn)爛芽、爛種現(xiàn)象,因此要在建設(shè)高臺(tái)育苗床,即高出地面30cm以上的苗床基礎(chǔ)上,結(jié)合澆透底水,噴施殺菌劑進(jìn)行苗床消毒,鹽堿地育苗的最好要進(jìn)行苗床調(diào)酸,確保pH4.5-5.5。播種量:手插秧平方米播芽種200-300克,機(jī)插盤育苗每盤播芽種125克,缽體盤育苗每缽穴播芽種3-5粒,一定要控制播量,不可過大。
六、加強(qiáng)秧田管理
春季可能出現(xiàn)低溫、春澇情況,建議采取苗后滅草,防止藥害發(fā)生,即在水稻秧苗1.5-2.5葉期,稗草2-3葉期莖葉處理,藥劑可選用千金加排草丹等。同時(shí)要重點(diǎn)做好青、立枯病預(yù)防工作,在秧苗2-3葉期噴施瑞苗清等藥劑,促進(jìn)壯苗,提高抗青、立枯病,抗逆能力。秧苗2葉期后,可根據(jù)秧苗長勢施用尿素或硫酸銨,防止脫肥,也可葉面噴施1%的磷酸二氫鉀或1%硫銨水補(bǔ)肥,施肥后要洗苗。秧田管理期間要加強(qiáng)大棚溫度、水分控制管理,防止溫度過高或過低、水分過濕或過干,要注意通風(fēng)煉苗,確保培育健壯秧苗。
七、各積溫帶扣棚、播種育苗進(jìn)度建議
大棚區(qū)清積雪應(yīng)在扣棚前4-7天,扣棚在播種前15天進(jìn)行,氣溫穩(wěn)定通過5-6℃即可播種育苗,氣溫穩(wěn)定通過12-13℃即可插秧。第一積溫帶4月5-12日育苗,5月13-20日插秧;第二積溫帶4月8-15日育苗,5月15-22日插秧;第三積溫帶4月12-20日育苗,5月18-25日插秧;第四積溫帶4月18-25日育苗,5月20-28日插秧。
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