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CAFC為您解析：集約化利用解決秸稈還田的弊端

2019-02-25 09:51:15 來(lái)源：CBPC大會(huì)組委會(huì) 閱讀量：15830 評(píng)論

　　【中國(guó)農(nóng)機(jī)網(wǎng) 展會(huì)預(yù)告】 前幾年因?yàn)榻斩捊麩?，中?guó)農(nóng)村開始大規(guī)模的推進(jìn)秸稈粉碎后還田。但是一段時(shí)間的實(shí)施后，還田的弊端也逐漸凸顯出來(lái)。

　　一是難以腐爛，在北方，氣溫低，這個(gè)問(wèn)題就特別明顯。秸稈還田后只有腐爛分解了，才能不影響耕作和作物生根發(fā)芽，才能釋放養(yǎng)分。如果腐爛不充分，土壤中摻入大量“生”秸稈，難免會(huì)影響當(dāng)季作物的生長(zhǎng)。
 
　　二是病蟲害問(wèn)題，秸稈還田后病蟲會(huì)進(jìn)入土壤，增加治理難度，且可能會(huì)根據(jù)還田的次數(shù)越積越多，影響收成，或?qū)е罗r(nóng)藥使用量增加。而土壤用農(nóng)藥往往是高毒農(nóng)藥，農(nóng)藥殘留勢(shì)必會(huì)影響作物品質(zhì)。
 
　　三是經(jīng)濟(jì)性差，秸稈還田會(huì)增加農(nóng)民的額外支出。饑餓感在土壤中腐爛會(huì)消耗養(yǎng)分，需要增加氮肥施入量。這沖抵了秸稈帶入養(yǎng)分所節(jié)約的費(fèi)用。秸稈粉碎還田需要使用設(shè)備，需要作業(yè)費(fèi)用、翻耕碾壓費(fèi)用、額外增加農(nóng)藥使用量產(chǎn)生的費(fèi)用，這些支出直接影響了農(nóng)民秸稈還田的積極性。
 
　　當(dāng)然，燒秸稈是必須被禁止的。如何更科學(xué)有效的利用這些秸稈？我們總結(jié)出以下幾點(diǎn)：一是在氣候溫暖、適宜的地區(qū)，可以因地制宜的推進(jìn)秸稈粉碎還田。二是在不適宜直接還田的地區(qū)，采用集約化利用，先將秸稈能源化利用，將秸稈壓塊、制粒后作為燃料使用，隨后把產(chǎn)生的灰渣作為肥料還田。這樣既可以作為清潔供暖的途徑，又可以避免產(chǎn)生直接還田的弊端。
 
　　集約化處理秸稈，能夠產(chǎn)生規(guī)模效益，可以節(jié)約農(nóng)民的種植支出，秸稈出售給燃料工廠可以增加農(nóng)民的收益。燃燒后的無(wú)害化草木灰肥料的使用可以避免病蟲害的泛濫，改善土壤質(zhì)量，提高肥效，作物增產(chǎn)增收，改善糧食品質(zhì)?？芍^一舉多得！
 
　　關(guān)于CAFC中國(guó)農(nóng)林廢棄物利用技術(shù)與發(fā)展大會(huì)：
 
　　中國(guó)新能源網(wǎng)、中國(guó)生物質(zhì)能源網(wǎng)、中國(guó)生物質(zhì)燃料網(wǎng)、能源通、顆粒通聯(lián)合業(yè)內(nèi)多家會(huì)展、媒體共同聯(lián)合發(fā)起《中國(guó)()農(nóng)林廢棄物利用技術(shù)與發(fā)展大會(huì)》——簡(jiǎn)稱《中國(guó)農(nóng)林廢棄物大會(huì)》，旨在建立一個(gè)生物質(zhì)能源化利用上下游企業(yè)線下交流與行業(yè)信息發(fā)布的平臺(tái)，為共同促進(jìn)行業(yè)發(fā)展貢獻(xiàn)一份力量！
 
　　2018年，首屆大會(huì)在杭州成功舉辦。近300位業(yè)內(nèi)人士：包括設(shè)備生產(chǎn)商、投資者、采購(gòu)商、專家學(xué)者等參與了本次大會(huì)，現(xiàn)場(chǎng)座無(wú)虛席。與會(huì)嘉賓們發(fā)表了精彩的演講，分別對(duì)行業(yè)政策、產(chǎn)業(yè)標(biāo)準(zhǔn)、新產(chǎn)品開發(fā)和項(xiàng)目實(shí)踐展開了深入的研討和介紹。

上一篇： 3月9日?鄭州 2019全國(guó)（春季）農(nóng)機(jī)展部分參展名單揭曉

下一篇：中國(guó)農(nóng)林廢棄物利用技術(shù)與發(fā)展大會(huì)將在杭州召開

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