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大豆玉米復合種植亟待加大適用機具研發(fā)
2022-08-29
09:07:51
來源:黑龍江省農(nóng)業(yè)機械試驗鑒定站 閱讀量:12519
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導讀:面對日益復雜的國際環(huán)境,保障新時代國家糧食安全,擴種大豆勢在必行。
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農(nóng)機網(wǎng) 熱點關(guān)注】面對日益復雜的國際環(huán)境,保障新時代國家糧食安全,擴種大豆勢在必行。
在耕地資源有限的情況下,大豆與玉米爭地矛盾突出,在適宜地區(qū)大力推廣大豆玉米帶狀復合種植,實現(xiàn)玉米基本不減產(chǎn)、增收一季大豆,推動大豆玉米兼容發(fā)展、協(xié)調(diào)發(fā)展乃至相向發(fā)展,為保障玉米產(chǎn)能、提高大豆自給率提供了新途徑,對保障糧油安全具有重要意義。然而,許多專家認為,大豆玉米帶狀復合種植作為一項新的種植技術(shù),要大面積推廣還需要破解品種關(guān)、成本關(guān)、機具關(guān)等各種難題。
培育新品種實現(xiàn)一體化種植
在貴州省福泉市陸坪鎮(zhèn)大豆玉米帶狀復合種植示范基地,大豆和玉米高矮分明,長勢茂盛。貴州省定希綠色農(nóng)業(yè)有限公司總經(jīng)理羅燦江說,他們公司今年示范推廣了大豆玉米帶狀復合種植1000畝,實行統(tǒng)一品種、統(tǒng)一技術(shù)、統(tǒng)一收購的經(jīng)營模式,統(tǒng)一選用半緊湊型玉米良種“正大659”和高產(chǎn)耐陰耐密大豆優(yōu)良品種“七星1號、齊黃34”,優(yōu)質(zhì)良種覆蓋率達100%;采用“2+2”和“2+3”帶狀復合種植模式,機耕、機防綜合機械化率達100%。國家每畝補貼150元,省級財政每畝補貼50元,由福泉市政府統(tǒng)一供種。“我們要帶著農(nóng)民干,示范引領周邊農(nóng)戶發(fā)展大豆玉米帶狀復合種植1萬畝。”羅燦江說。
大力推廣大豆玉米帶狀復合種植是擴種大豆的關(guān)鍵之舉。大豆玉米帶狀復合種植采用大豆帶與玉米帶間作套種,充分利用高位作物玉米邊行優(yōu)勢,擴大低位作物空間,實現(xiàn)作物協(xié)同共生、一季雙收、年際間交替輪作,可有效解決玉米大豆爭地問題,真正實現(xiàn)一季雙收,玉米不減產(chǎn),多收一季豆。今年,我國在黃淮海、西北、西南地區(qū)大力推廣玉米大豆帶狀復合種植1500多萬畝,到2025年,推廣大豆玉米帶狀復合種植面積5000萬畝,折合大豆種植面積2500萬畝。
大豆玉米帶狀復合種植能充分發(fā)揮玉米的邊行效應和大豆的固氮養(yǎng)地作用,在玉米基本不減產(chǎn)的基礎上實現(xiàn)大豆增收。農(nóng)業(yè)農(nóng)村部農(nóng)業(yè)機械化總站信息處副處長朱禮好認為,復合種植要確保玉米不減產(chǎn)。這是因為,我國玉米市場供需緊平衡態(tài)勢還沒有改變,穩(wěn)定玉米產(chǎn)量至關(guān)重要。在復合種植模式下,要通過加大玉米種植密度、搞好肥水調(diào)控等措施穩(wěn)住玉米產(chǎn)量。同時,在保證種植密度的前提下,種在邊行的玉米可以結(jié)兩個到三個穗,穗大粒多,進一步提高產(chǎn)量。復合種植還能利用大豆中的根瘤菌提高土壤肥力,補充玉米生長所需要的養(yǎng)分。
羅燦江說,大豆玉米帶狀復合種植過程中,選擇品種非常關(guān)鍵。玉米要選擇株型緊湊、抗倒性強的品種,能保證通風透光;大豆要選用耐陰、抗倒、中早熟、高產(chǎn)、宜機收的新品種,保證在和玉米套播情況下,產(chǎn)量依然較高。
值得關(guān)注的是,在大豆玉米帶狀復合種植田間管理中,玉米和大豆兩種作物不能使用同一種
除草劑,導致田間管理成本增高、作業(yè)效率降低、難以機械化操作。當前亟需培育出能抗大豆除草劑的玉米新品種,有效解決玉米大豆間作過程中難以一體化機械除草的難題。
強化補貼調(diào)動農(nóng)民積極性
生產(chǎn)成本高是制約大豆玉米帶狀復合種植推廣的主要因素之一。對于農(nóng)民來說,實施大豆玉米復合種植,要過播種關(guān)、除草關(guān)、收獲關(guān)等各種難關(guān),需要付出更多的生產(chǎn)成本,才能實現(xiàn)玉米不減產(chǎn)、多收一季豆的生產(chǎn)目標。“如果補貼不到位,很難調(diào)動農(nóng)民采用大豆玉米帶狀復合種植技術(shù)。”河北柏鄉(xiāng)縣金谷源優(yōu)質(zhì)小麥專業(yè)合作社理事長常清說。
為了推廣大豆玉米帶狀復合種植,今年中央財政專門安排了補貼資金,對西北、黃淮海、西南和長江中下游等適宜地區(qū)推廣玉米大豆帶狀復合種植予以支持,對承擔任務的種糧大戶、家庭農(nóng)場、合作社等新型農(nóng)業(yè)經(jīng)營主體給予補貼。各地在中央財政每畝補貼150元基礎上再配套不同程度的補貼,彌補播種、施肥、打藥、收獲等環(huán)節(jié)增加的成本。此外,一些地區(qū)在爭取把帶狀復合種植也納入農(nóng)業(yè)保險的保障范圍。
內(nèi)蒙古是我國重要的玉米和大豆主產(chǎn)區(qū),今年在8個大豆示范片和50個玉米示范片均開展大豆玉米帶狀復合種植示范和百畝高產(chǎn)攻關(guān),對示范片采取農(nóng)資補助和技術(shù)服務等扶持方式。比如,鄂爾多斯市整合市級資金,支持承擔大豆玉米帶狀復合種植任務的旗區(qū),根據(jù)實際進行補助。在發(fā)放大豆玉米復合種植補貼的基礎上,內(nèi)蒙古開展大豆完全成本保險試點,進一步提高農(nóng)業(yè)保險保障水平,穩(wěn)定農(nóng)戶種豆收益,提高大豆種植積極性。
雖然國家和地方都有補貼,但大豆玉米帶狀復合種植生產(chǎn)成本高,補貼還不足以對沖所付出的成本。四川眉山市東坡區(qū)太和鎮(zhèn)永豐村好味稻水稻專業(yè)合作社理事長李相德告訴記者,合作社今年推廣大豆玉米帶狀復合種植1000畝。由于當前中央財政補貼向種糧大戶、家庭農(nóng)場、合作社等新型農(nóng)業(yè)經(jīng)營主體傾斜,小農(nóng)戶拿不到補貼,影響小農(nóng)戶推廣大豆玉米帶狀復合種植的積極性。“希望國家補貼政策能兼顧小農(nóng)戶,充分調(diào)動小農(nóng)戶推廣大豆玉米帶狀復合種植的積極性。”李相德說。
亟待加大適用機具研發(fā)
大面積推廣大豆玉米帶狀復合種植,要盡可能降低勞動強度和生產(chǎn)成本,使用高效種管收作業(yè)機具是關(guān)鍵。多數(shù)農(nóng)戶反映,大豆玉米帶狀復合種植推廣的難點在于還沒有研發(fā)制造出適宜這種種植技術(shù)的農(nóng)機裝備。“我國大豆玉米帶狀復合
種植機市場將迎來更加廣闊的前景,將大大提升相關(guān)機具生產(chǎn)企業(yè)的發(fā)展空間。”朱禮好說。
西華大學現(xiàn)代農(nóng)業(yè)裝備研究院常務副院長王霜教授認為,為了保證大豆等油料作物的供給,在農(nóng)機裝備尚未完全發(fā)展成熟的情況下,今年就在全國大面積推廣大豆玉米帶狀復合種植。條帶分割、高低錯位的大豆玉米復合種植對農(nóng)機裝備要求很高。目前專用的播種、噴藥、收獲等機械產(chǎn)業(yè)化進展還不能完全滿足需要。要想點“土洋結(jié)合”的辦法,一方面,要圍繞滿足不同區(qū)域復合種植主推技術(shù)模式的播種、植保、收獲環(huán)節(jié)農(nóng)機作業(yè)需要,對現(xiàn)有機具適配改造應用,盡可能降低勞動強度和生產(chǎn)成本;另一方面,加快復合種植專用機械研制推廣,為玉米帶狀復合種植任務提供裝備支撐。
目前,各地相關(guān)農(nóng)機裝備研發(fā)和推動工作正在全國范圍內(nèi)緊鑼密鼓展開。多地存在現(xiàn)有在用種管收機械適用性不強、機手作業(yè)經(jīng)驗缺乏等困難。
專家認為,首先要積極引導農(nóng)機生產(chǎn)企業(yè)與科研院所主動對接,聯(lián)合攻關(guān),加大對大豆玉米帶狀復合種植播種、植保、收割等專用機械的研發(fā)制造力度,保障“有好機用”。其次要積極爭取政策支持,加大資金投入,通過改裝、新購等措施,努力提高專用機具保有量,夯實農(nóng)機裝備基礎。再次要加強培訓,向農(nóng)機手傳授調(diào)試方法和操作技能,依托農(nóng)機專業(yè)服務組織培養(yǎng)一批復合
種植機械化作業(yè)能手,確保復合種植機具用得上、用得好。最后,要精心組織農(nóng)機社會化服務,有效對接作業(yè)服務供需,特別要針對當?shù)貜秃戏N植專用播種機械、窄幅收獲機械保有量缺口問題,加強區(qū)域溝通協(xié)作,引導開展跨區(qū)作業(yè)服務。對復合種植重點區(qū)域?qū)嵭邪笇?,督促落實機具保障工作措施,及時調(diào)度關(guān)鍵環(huán)節(jié)農(nóng)機作業(yè)進度,協(xié)調(diào)解決困難問題,確保種得好、管得住、收得上,以機械化的有力支撐,增強各地發(fā)展復合種植的信心。
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