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殘膜回收治理農(nóng)田“白色污染”

2018-11-19 17:37:20 來(lái)源：中國(guó)農(nóng)機(jī)網(wǎng)整理發(fā)布 閱讀量：33579 評(píng)論

導(dǎo)讀：地膜覆蓋栽培技術(shù)在上世紀(jì)70年代被引入中國(guó)，主要是指將透明的塑料薄膜覆蓋地面，在膜下播種并保護(hù)農(nóng)作物幼苗生長(zhǎng)，待氣溫轉(zhuǎn)暖后揭開(kāi)薄膜，使幼苗轉(zhuǎn)入正常氣候條件下生長(zhǎng)。這項(xiàng)技術(shù)有著良好的控溫保墑作用，我國(guó)覆膜栽培從冷涼地區(qū)發(fā)展到城郊平原，從果蔬作物擴(kuò)大到糧棉作物，顯著提高了勞動(dòng)效率，農(nóng)業(yè)作業(yè)效益高。

　　【中國(guó)農(nóng)機(jī)網(wǎng) 地方農(nóng)機(jī)】地膜覆蓋栽培技術(shù)在上世紀(jì)70年代被引入中國(guó)，主要是指將透明的塑料薄膜覆蓋地面，在膜下播種并保護(hù)農(nóng)作物幼苗生長(zhǎng)，待氣溫轉(zhuǎn)暖后揭開(kāi)薄膜，使幼苗轉(zhuǎn)入正常氣候條件下生長(zhǎng)。這項(xiàng)技術(shù)有著良好的控溫保墑作用，我國(guó)覆膜栽培從冷涼地區(qū)發(fā)展到城郊平原，從果蔬作物擴(kuò)大到糧棉作物，顯著提高了勞動(dòng)效率，農(nóng)業(yè)作業(yè)效益高。
 
　　20世紀(jì)90年代我國(guó)農(nóng)作物覆膜栽培面積達(dá)6000多萬(wàn)畝，特別是在高寒冷涼地區(qū)，增產(chǎn)效果更為顯著，被譽(yù)為山區(qū)脫貧致富的“溫飽工程”。但是大量農(nóng)田地膜的使用，也帶來(lái)了嚴(yán)重危害。首先，土壤環(huán)境污染嚴(yán)重，地膜降解產(chǎn)生有害物質(zhì)的同時(shí)降低了土壤含水量，削弱抗旱能力，引起次生鹽漬化，造成土壤板結(jié)且肥力下降并直接影響土壤供應(yīng)作物水分、養(yǎng)分能力；其次，地膜的使用還降低種子發(fā)芽率、影響作物生長(zhǎng)發(fā)育，導(dǎo)致減產(chǎn)；再次，殘膜隨意堆放、散落在田頭、房前等地方，嚴(yán)重影響村容村貌，污染農(nóng)村環(huán)境，造成嚴(yán)重的“白色污染”。
 
　　新疆：全國(guó)殘膜污染綜合治理技術(shù)現(xiàn)場(chǎng)會(huì)舉行
 
　　日前，農(nóng)業(yè)農(nóng)村部聯(lián)合中國(guó)工程院、科技部在新疆維吾爾自治區(qū)阿拉爾市召開(kāi)全國(guó)殘膜污染綜合治理技術(shù)現(xiàn)場(chǎng)會(huì)，探索交流農(nóng)田殘膜污染防治技術(shù)與經(jīng)驗(yàn)，進(jìn)一步推動(dòng)農(nóng)膜回收行動(dòng)。
 
　　會(huì)議研究討論了我國(guó)殘膜污染治理情況及關(guān)鍵技術(shù)研究進(jìn)展，強(qiáng)調(diào)要進(jìn)一步強(qiáng)化技術(shù)創(chuàng)新，提升農(nóng)田殘膜污染治理技術(shù)和裝備化水平，持續(xù)推進(jìn)我國(guó)農(nóng)田殘膜污染治理工作。會(huì)議還指出，殘膜回收機(jī)具是保障地膜回收利用的重要手段，各級(jí)農(nóng)業(yè)農(nóng)村部門(mén)要強(qiáng)化成果轉(zhuǎn)化推廣，加強(qiáng)聯(lián)合協(xié)作，推動(dòng)熟化技術(shù)產(chǎn)品落地，形成系統(tǒng)性的農(nóng)膜回收利用解決方案，為治理農(nóng)田“白色污染”插上科技的翅膀。
 
　　會(huì)議期間，代表們觀摩了板式秸稈粉碎地膜回收聯(lián)合作業(yè)機(jī)、秸稈還田殘膜回收聯(lián)合作業(yè)機(jī)、鏈齒耙式耕層殘膜回收機(jī)等作業(yè)情況，一些機(jī)具當(dāng)季地膜回收率可達(dá)85%以上。
 
　　四川省南充市：力爭(zhēng)2020年全市廢舊農(nóng)膜回收利用率達(dá)到81%
 
　　2017年以來(lái)，由南市農(nóng)技站牽頭開(kāi)展的農(nóng)膜科學(xué)使用及回收利用工作，通過(guò)大力推進(jìn)農(nóng)膜科學(xué)使用，強(qiáng)力促進(jìn)農(nóng)膜回收利用，盡力防治農(nóng)膜殘留污染，有效減輕了農(nóng)膜危害，明顯修復(fù)了農(nóng)業(yè)生態(tài)。
 
　　農(nóng)膜回收相關(guān)措施到位，加強(qiáng)行政推動(dòng)、加強(qiáng)示范建設(shè)、加強(qiáng)檢查督促、加強(qiáng)信息報(bào)送。自措施實(shí)施以來(lái)，殘膜回收工作卓有成效。農(nóng)膜使用有效減量，今年以來(lái)全市實(shí)現(xiàn)農(nóng)膜覆蓋面積降低到126.73萬(wàn)畝，使用量減少至1.18萬(wàn)噸，較上年減少0.02萬(wàn)噸；農(nóng)膜推廣科學(xué)合理，全市0.01毫米以上農(nóng)膜使用率達(dá)到81.7%，推廣科學(xué)覆膜技術(shù)57.6萬(wàn)畝，應(yīng)用覆膜替代技術(shù)28.7萬(wàn)畝；農(nóng)膜回收逐步強(qiáng)化，全市現(xiàn)已成功引進(jìn)農(nóng)膜回收企業(yè)4個(gè)，建立完善農(nóng)膜回收網(wǎng)點(diǎn)1841個(gè)，回收利用農(nóng)膜0.92萬(wàn)噸，較上年增加0.01萬(wàn)噸，回收利用率提高1%，達(dá)到78%。
 
　　當(dāng)?shù)剡x擇了一批基礎(chǔ)條件好，思想意識(shí)高的專業(yè)農(nóng)膜回收站，在全市建立起了15個(gè)農(nóng)膜回收示范站點(diǎn)，樹(shù)立起了一批典型，形成示范機(jī)制；通過(guò)農(nóng)戶座談交流、業(yè)主培訓(xùn)教育、新聞媒體宣傳多樣化的宣傳教育模式，提高了全民農(nóng)膜回收環(huán)保意識(shí)，形成意識(shí)機(jī)制；制定了《南充市農(nóng)膜回收利用十三五規(guī)劃》，對(duì)農(nóng)膜回收利用下個(gè)五年計(jì)劃目標(biāo)任務(wù)、工作舉措、組織保障等工作做了詳盡的規(guī)劃和安排，形成了長(zhǎng)效機(jī)制。力爭(zhēng)南充市每年將廢舊農(nóng)膜回收利用率提高2個(gè)百分點(diǎn)，到2020年全市廢舊農(nóng)膜回收利用率達(dá)到81%。
 
　　青海省大通縣：將殘膜回收作為改善農(nóng)業(yè)生態(tài)環(huán)境的著力點(diǎn)
 
　　近年來(lái)，大通縣持續(xù)加大農(nóng)田殘膜回收工作落實(shí)。自開(kāi)展農(nóng)田殘膜回收工作以來(lái)，大通縣全膜馬鈴薯推廣面積累計(jì)達(dá)47萬(wàn)畝，使用地膜3290噸，已累計(jì)回收殘膜2830噸，回收率達(dá)86%，達(dá)到省項(xiàng)目回收殘膜75%-80%的要求，投入回收資金423.98萬(wàn)元。
 
　　為減少農(nóng)業(yè)面源污染，改善農(nóng)業(yè)生態(tài)環(huán)境，大通縣建立了農(nóng)膜供貨企業(yè)回收機(jī)制，按照“誰(shuí)供膜誰(shuí)回收，誰(shuí)種植誰(shuí)撿拾”的原則，進(jìn)行殘膜回收。同時(shí)，充分利用農(nóng)村現(xiàn)有的再生資源回收網(wǎng)絡(luò)，建立布局合理的殘膜回收網(wǎng)點(diǎn)，堅(jiān)持市場(chǎng)化運(yùn)作，鼓勵(lì)扶持新型經(jīng)營(yíng)主體、能人大戶等經(jīng)紀(jì)人在農(nóng)村開(kāi)展殘膜收購(gòu)，通過(guò)經(jīng)紀(jì)人帶動(dòng)，引導(dǎo)和動(dòng)員農(nóng)民清理殘膜。
 
　　目前，大通縣農(nóng)田殘膜回收工作以縣農(nóng)業(yè)技術(shù)推廣中心基層農(nóng)技區(qū)域站為單位，全力指導(dǎo)和配合全縣20個(gè)鄉(xiāng)鎮(zhèn)的殘膜回收工作。為加強(qiáng)管理，便利農(nóng)田殘膜收集、儲(chǔ)藏及交運(yùn)等工作，培養(yǎng)扶持殘膜回收經(jīng)紀(jì)人4個(gè)，各服務(wù)5個(gè)鄉(xiāng)鎮(zhèn)的殘膜回收工作，有效提升了殘膜工作回收效率和質(zhì)量，進(jìn)一步改善了農(nóng)業(yè)生態(tài)環(huán)境。
 
　　本文由中國(guó)農(nóng)機(jī)網(wǎng)整理發(fā)布，部分資料來(lái)源：農(nóng)業(yè)農(nóng)村部新聞辦公室、四川省農(nóng)業(yè)廳、青海新聞網(wǎng)，如有侵權(quán)或異議請(qǐng)聯(lián)系我們。

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