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吉林梨樹縣創(chuàng)新耕作模式 黑土地保護(hù)實(shí)踐取得明顯成效

2020-07-30 10:05:26 來源:吉林省四平市農(nóng)業(yè)農(nóng)村局 閱讀量:15398 評論

  【農(nóng)機(jī)網(wǎng) 地方農(nóng)機(jī)】 針對過分追求產(chǎn)量帶來的黑土地長期透支問題,吉林省四平市梨樹縣從2007年起,與中國科學(xué)院、中國農(nóng)業(yè)大學(xué)等科研院所合作,集成創(chuàng)新技術(shù),探索保護(hù)性耕作的“梨樹模式”。
 
  一是試驗(yàn)推行秸稈全覆蓋技術(shù)。開啟秸稈全覆蓋免耕播種“梨樹模式”,2016年,《農(nóng)民日報》整版刊發(fā)報道。這種模式核心內(nèi)容是,玉米收獲后將秸稈全部還田覆蓋地表,春季使用免耕播種機(jī)一次性完成整理秸稈、開溝、施肥、播種、覆土、鎮(zhèn)壓等作業(yè),大限度減少土壤擾動次數(shù),達(dá)到蓄水保墑、培肥土壤和穩(wěn)產(chǎn)高產(chǎn)效果。這種模式帶來顯著的生態(tài)效益。經(jīng)連續(xù)10年監(jiān)測,試驗(yàn)地塊土壤含水量增加20—40%,耕層0—20厘米有機(jī)質(zhì)含量增加12.9%;每平方米蚯蚓數(shù)量增加到120多條,是常規(guī)壟作的6倍;保護(hù)性耕作每年減少秸稈焚燒100萬噸以上,顯著改善空氣質(zhì)量;每年減少化肥使用量3000噸,有效減輕農(nóng)業(yè)面源污染。同時,這種模式每公頃可節(jié)約成本1200元左右,單產(chǎn)提高8%以上。
 
  二是創(chuàng)新研制免耕播種機(jī)。全力破解推廣保護(hù)性耕作過程中應(yīng)用機(jī)械化難題,加大力度推進(jìn)免耕播種機(jī)研發(fā)。2008年,免耕播種機(jī)在梨樹問世,現(xiàn)在已經(jīng)發(fā)展到第6代,農(nóng)機(jī)大戶達(dá)到320戶,全縣投放免耕播種機(jī)、深松整地聯(lián)合作業(yè)機(jī)等配套農(nóng)機(jī)具近2萬臺套。
 
  三是大力推廣全程機(jī)械化技術(shù)。借助新型合作經(jīng)濟(jì)組織強(qiáng)勁發(fā)展優(yōu)勢,鼓勵村屯干部、種糧大戶、致富帶頭人發(fā)展規(guī)?;?jīng)營,全縣農(nóng)民專業(yè)合作社和家庭農(nóng)場分別達(dá)到3651個、938個,流轉(zhuǎn)土地130萬畝。廣泛應(yīng)用全程機(jī)械化技術(shù),打破條塊種植對保護(hù)性耕作的約束限制,2020年,全縣綜合機(jī)械化水平達(dá)到92%。
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