化肥農(nóng)藥危害大,減量提效勢(shì)在必行

2018-03-21 15:51:56 來(lái)源:中國(guó)農(nóng)機(jī)網(wǎng) 閱讀量:26881 評(píng)論

  【中國(guó)農(nóng)機(jī)網(wǎng) 本站原創(chuàng)】 從“十三五”開(kāi)始,農(nóng)業(yè)部大力開(kāi)展化肥農(nóng)藥使用量零增長(zhǎng)行動(dòng)以來(lái),我國(guó)的化肥、農(nóng)藥使用總量均已呈現(xiàn)下降趨勢(shì),提前實(shí)現(xiàn)了到2020年化肥、農(nóng)藥使用量零增長(zhǎng)的目標(biāo)。但在取得成績(jī)的同時(shí)還要認(rèn)識(shí)到,我國(guó)化肥農(nóng)藥總體使用量還是很龐大的,如何進(jìn)一步推進(jìn)化肥農(nóng)藥減量增效、實(shí)現(xiàn)綠色興農(nóng)是當(dāng)前面臨的主要問(wèn)題。
 
  多措并舉,提高化肥農(nóng)藥利用率
 
 
  據(jù)了解,2017年我國(guó)水稻、玉米、小麥三大糧食作物化肥利用率為37.8%,農(nóng)藥利用率為38.8%,而美國(guó)糧食作物氮肥利用率大體在50%,歐洲糧食作物氮肥利用率大體在65%;歐美發(fā)達(dá)國(guó)家小麥、玉米等糧食作物的農(nóng)藥利用率在50%至60%??梢?jiàn)我國(guó)農(nóng)藥化肥利用率與發(fā)達(dá)國(guó)家相比還存在一定差距。據(jù)測(cè)算,化肥利用率提高2.6個(gè)百分點(diǎn),相當(dāng)于減少尿素用量130萬(wàn)噸(實(shí)物量),減少生產(chǎn)投入約26億元;減少的化肥投入相當(dāng)于減少氮排放近60萬(wàn)噸、節(jié)省130萬(wàn)噸燃煤或90萬(wàn)立方米天然氣。農(nóng)藥利用率提高2.2個(gè)百分點(diǎn),相當(dāng)于減少農(nóng)藥使用量3萬(wàn)噸(實(shí)物量),減少生產(chǎn)投入約12億元。提高化肥農(nóng)藥利用率,不僅節(jié)約生產(chǎn)成本,節(jié)能減排實(shí)現(xiàn)綠色興農(nóng),對(duì)我國(guó)整體環(huán)境保護(hù)也會(huì)起到很大作用。如何來(lái)提高化肥農(nóng)藥利用率?
 
  加力推進(jìn)集成創(chuàng)新,重點(diǎn)推廣化肥機(jī)械深施、機(jī)械追肥、種肥同播、水肥一體化等技術(shù);積極推廣先進(jìn)施肥施藥機(jī)械,加快替代落后機(jī)械。如水稻插秧同步精量施肥機(jī)的推廣使用,將肥料定量、定點(diǎn)、定時(shí)地深施到秧苗一側(cè)的泥土里,實(shí)現(xiàn)施肥,肥料不會(huì)隨水流失,可大幅減少肥料對(duì)水體的污染;同時(shí)可搭載在插秧機(jī)上實(shí)現(xiàn)施肥與插秧同步作業(yè),節(jié)本省工,提高化肥利用率效果非常明顯。
 
  另外,推廣應(yīng)用農(nóng)業(yè)防治、生物防治、物理防治等綠色防控技術(shù),推進(jìn)統(tǒng)防統(tǒng)治與綠色防控融合;同時(shí)加大新型肥料、農(nóng)藥的研發(fā)力度,重點(diǎn)研發(fā)緩釋肥料、低毒低殘留農(nóng)藥、生物肥料、生物農(nóng)藥等新型產(chǎn)品也是提高化肥農(nóng)藥利用率的重要舉措。
 
  政策助力,倡導(dǎo)農(nóng)業(yè)主體節(jié)本增效
 
 
  過(guò)去,不少農(nóng)村的種植地里出現(xiàn)這樣的一幕幕——由于缺乏環(huán)保意識(shí)和科學(xué)用藥用肥意識(shí),一些農(nóng)民不按規(guī)定使用農(nóng)藥量和化肥量,使用過(guò)的農(nóng)藥瓶子亂丟亂放……由于很多農(nóng)民對(duì)化肥農(nóng)藥過(guò)度使用的危害認(rèn)識(shí)不到位,因此政府加大對(duì)化肥農(nóng)藥科學(xué)用量的宣傳是*的,讓農(nóng)業(yè)生產(chǎn)主體自發(fā)減少化肥農(nóng)藥使用量,指導(dǎo)家庭農(nóng)場(chǎng)、合作社、帶頭減化肥、減農(nóng)藥,從源頭減輕農(nóng)業(yè)面源污染;在全國(guó)建立一批不同類型的化肥、農(nóng)藥減量增效示范區(qū),充分發(fā)揮其、示范和*作用;同時(shí)政府加大補(bǔ)貼力度,出臺(tái)相關(guān)支農(nóng)惠農(nóng)政策,在政策方面對(duì)農(nóng)民予以支持。
 
  長(zhǎng)期、大量使用化肥農(nóng)藥,不僅會(huì)對(duì)農(nóng)產(chǎn)品產(chǎn)生有毒有害物質(zhì)殘留、對(duì)人體健康產(chǎn)生危害;同時(shí)還會(huì)使土壤養(yǎng)分失衡、土壤肥力和有機(jī)質(zhì)下降,導(dǎo)致耕地土壤酸化、土壤流失,嚴(yán)重會(huì)導(dǎo)致土壤板結(jié),終喪失農(nóng)業(yè)耕種價(jià)值。因此,倡導(dǎo)科學(xué)用量,全面加快推進(jìn)化肥農(nóng)藥使用的減量化,踐行實(shí)施鄉(xiāng)村振興戰(zhàn)略提出的“加強(qiáng)農(nóng)業(yè)面源污染防治,開(kāi)展農(nóng)業(yè)綠色發(fā)展行動(dòng),實(shí)現(xiàn)投入品減量化、生產(chǎn)清潔化、廢棄物資源化、產(chǎn)業(yè)模式生態(tài)化”勢(shì)在必行。
 
  資料來(lái)源:經(jīng)濟(jì)日?qǐng)?bào)
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