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凸顯保護(hù)性耕作技術(shù)三大作用,促進(jìn)糧食生產(chǎn)生態(tài)可持續(xù)

2023-03-30 09:05:17 來源:北京市農(nóng)業(yè)機(jī)械試驗(yàn)鑒定推廣站 閱讀量:19455 評(píng)論

  【農(nóng)機(jī)網(wǎng) 地方農(nóng)機(jī)】保護(hù)性耕作機(jī)械化技術(shù)是相對(duì)于傳統(tǒng)翻耕的一種耕作技術(shù),該技術(shù)可以減少農(nóng)機(jī)進(jìn)地次數(shù),改善土壤結(jié)構(gòu),減少水蝕、風(fēng)蝕和養(yǎng)分流失,保護(hù)土壤,達(dá)到糧食生產(chǎn)綠色可持續(xù)發(fā)展的目的。近年來,北京市通過實(shí)施季節(jié)性裸露農(nóng)田揚(yáng)塵抑制保護(hù)性耕作技術(shù)工作,進(jìn)一步促進(jìn)了糧食生產(chǎn)保護(hù)性耕作機(jī)械化技術(shù)的推廣應(yīng)用。每年全市小麥、玉米糧食生產(chǎn)區(qū)實(shí)施包括農(nóng)機(jī)深松整地、秸稈粉碎還田、少免耕播種三項(xiàng)核心技術(shù)作業(yè)面積累計(jì)50萬畝以上。從京郊實(shí)際應(yīng)用看,京郊保護(hù)性耕作機(jī)械化技術(shù)凸顯了3大作用,具有明顯的穩(wěn)糧增產(chǎn)、節(jié)本增效、綠色生態(tài)的良好效益。
 
  其中第一位就是具有不可低估的糧食增產(chǎn)作用。今年中央一號(hào)文件提出要全力抓好糧食生產(chǎn)。主攻單產(chǎn)、力爭(zhēng)多增產(chǎn)。從國家糧食安全戰(zhàn)略考慮,通過深松、秸稈覆蓋和免耕播種機(jī)化技術(shù),植株根系更發(fā)達(dá),在玉米抗倒伏上具有明顯的優(yōu)勢(shì),植株自我恢復(fù)能力較強(qiáng),采用保護(hù)性耕作技術(shù)普遍比傳統(tǒng)耕作模式倒伏要輕,在收獲環(huán)節(jié)可以減少糧食損失10%以上,正常年份,增產(chǎn)7%以上沒有問題。
 
  第二個(gè)作用就是具有明顯的節(jié)省生產(chǎn)費(fèi)用。免耕播種,可以減少機(jī)械整地、旋耕作業(yè),一年兩茬作物全年生產(chǎn)可以減少農(nóng)機(jī)進(jìn)地作業(yè)次數(shù)3次以上,通過節(jié)省油耗、人工、機(jī)械等費(fèi)用一年每畝減少生產(chǎn)成本50元以上。
 
  第三個(gè)作用就是具有持續(xù)顯現(xiàn)的生態(tài)功能。秸稈有機(jī)質(zhì)含量豐富,又富含氮磷鉀以及作物需要的中微量元素。秸稈粉碎還田后可以增加土壤有機(jī)質(zhì)和土壤養(yǎng)分,培肥地力提高糧食產(chǎn)量的潛力非常大。同時(shí),根據(jù)農(nóng)田揚(yáng)塵監(jiān)測(cè)點(diǎn)數(shù)據(jù)顯示,與傳統(tǒng)耕作相比,采用保護(hù)性耕作技術(shù)區(qū)域農(nóng)田揚(yáng)塵可減少35%以上,具有較好的農(nóng)田生態(tài)保護(hù)效果。
 
  據(jù)北京市農(nóng)業(yè)機(jī)械試驗(yàn)鑒定推廣站技術(shù)人員介紹,持續(xù)強(qiáng)化裸地?fù)P塵管控是今年北京市大氣污染防治行動(dòng)計(jì)劃的重要任務(wù),對(duì)農(nóng)機(jī)推廣部門來講,具體措施就是要加強(qiáng)技術(shù)指導(dǎo),做好保護(hù)性耕作機(jī)械化技術(shù)模式的示范推廣,避免耕地長(zhǎng)期裸露。為此,今年我們將針對(duì)北京市平原區(qū)、山區(qū)的糧食作物種植生產(chǎn)特點(diǎn),做好冬小麥、夏玉米、春玉米保護(hù)性耕作機(jī)械化技術(shù)示范,同時(shí)做好農(nóng)田揚(yáng)塵數(shù)據(jù)監(jiān)測(cè),通過深松、免耕播種、秸稈粉碎還田等環(huán)節(jié)的技術(shù)措施和效果監(jiān)測(cè),進(jìn)一步優(yōu)化提升糧食生產(chǎn)的經(jīng)濟(jì)效益和生態(tài)效益,促進(jìn)北京市糧食生產(chǎn)生態(tài)可持續(xù)發(fā)展。
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