本文選題：稻秸 + 稻秸組分　； 參考：《水土保持學(xué)報(bào)》2017年04期

【摘要】：為探明稻秸(稻草)及其不同組分(腐解稻秸、可溶性有機(jī)物和去活稻秸)對(duì)紅黃泥水稻土微生物量碳、氮(MBC、MBN)和可溶性有機(jī)碳、氮(DOC、DON)含量的影響。通過(guò)室內(nèi)恒溫培養(yǎng)試驗(yàn),研究了長(zhǎng)期淹水條件下,添加稻秸及其組分對(duì)MBC、MBN、DOC和DON的影響。結(jié)果表明,與對(duì)照(S處理)相比,添加稻秸(RS+S處理)、腐解稻秸(DRS+S處理)和去活稻秸(NARS+S處理)均提高了MBC,提高幅度分別為11.17%(p0.01),1.83%和6.25%(p0.05),添加可溶性有機(jī)物(DOM+S處理)處理降低了MBC,降低幅度為2.67%;RS+S處理提高了MBN,提高幅度為15.29%,DRS+S、DOM+S和NARS+S處理均降低了MBN,降低幅度分別為15.19%,3.09%和15.92%。與S處理相比,RS+S、DRS+S、DOM+S和NARS+S處理均極顯著提高了紅黃泥DOC(p0.01),提高幅度依次分別為13.33%,10.88%,6.81%和11.41%;RS+S、DRS+S和DOM+S處理均顯著提高了紅黃泥DON(p0.05),NARS+S處理極顯著提高了紅黃泥DON(p0.01),提高幅度依次分別為6.96%,10.84%,10.12%和13.41%。與S處理相比,DRS+S和NARS+S處理極顯著提高了MBC/MBN,RS+S處理顯著降低了MBC/MBN,DOM+S處理對(duì)MBC/MBN幾乎沒(méi)有影響;各處理對(duì)DOC/DON沒(méi)有顯著影響。稻秸及其不同組分對(duì)紅黃泥水稻土MBC、MBN、DOC和DON含量的影響基本一致,但影響程度存在差異,稻秸和去活稻秸影響較大。結(jié)果可為稻秸及其不同組分對(duì)MBC、MBN、DOC和DON的影響機(jī)理提供基礎(chǔ)數(shù)據(jù),進(jìn)一步揭示稻田土壤速效養(yǎng)分的來(lái)源與轉(zhuǎn)化關(guān)系,為農(nóng)業(yè)生產(chǎn)中秸稈的科學(xué)利用和稻田土壤肥力定向培育提供科學(xué)依據(jù)。
[Abstract]:In order to investigate the effects of rice straw (straw) and its different components (decomposed rice straw, soluble organic matter and deactivated rice straw) on the contents of microbial biomass carbon, nitrogen MBC MBN and soluble organic carbon, DOC DOCDON in red yellow mud paddy soil. The effects of rice straw and its components on the DOC and don of MBN were studied under the condition of long-term flooding. The results showed that, compared with the control, The MBCs were increased by adding rice straw (RS S treatment, decaying rice straw (DRS S treatment) and devitalized rice straw (NARS S treatment). The increase ranges were 11.17% and 1.83% and 6.25%, respectively, and the MBCs were decreased by 2.67% and 2.67% respectively under the addition of rice straw (RRS) and decaying rice straw (DRS S treatment) and inactivated rice straw (NARS S treatment). The MBN was increased by 15.29% and decreased by 15.19% and 15.92%, respectively. Compared with S treatment, DRS DRS S and NARS S treatments significantly increased the red and yellow mud DOCN p0.01g, and the increase ranges were 13.3333 ~ 10.88% and 11.41% respectively. The red and yellow mud DONP0.05 and NARS treatments increased the red and yellow mud DOP 0.01, and increased the red and yellow mud DRS treatment by 11.41% and 11.41%, respectively, and significantly increased the red and yellow mud DOC p0.01g, and increased the red and yellow mud DOCp0.01g significantly by the treatment of DRS and NARS S, respectively, by 6.81%, 11.41% and 11.41%, respectively. The ranges were 6.96, 10.84, 10.12% and 13.41, respectively. Compared with S treatment, DRS S and NARS S treatments significantly increased the MBC / MBNRS S treatment, significantly reduced the MBC / MBN Dom S treatment and had no effect on the MBC / MBN / MBN, and each treatment had no significant effect on the door / don. The effects of rice straw and its different components on the contents of DOC and don in red and yellow mud paddy soil were basically the same, but the degree of influence was different, and the effect of rice straw and deactivated rice straw was greater. The results can provide basic data for the effect mechanism of rice straw and its different components on the DOC and don of MBN, and further reveal the relationship between the source and transformation of available nutrients in paddy soil. It provides scientific basis for the scientific utilization of straw in agricultural production and directional cultivation of soil fertility in paddy fields.
【作者單位】： 凱里學(xué)院環(huán)境與生命科學(xué)學(xué)院;中國(guó)科學(xué)院亞熱帶農(nóng)業(yè)生態(tài)研究所亞熱帶農(nóng)業(yè)生態(tài)過(guò)程重點(diǎn)實(shí)驗(yàn)室;宿州學(xué)院環(huán)境與測(cè)繪工程學(xué)院;湖南農(nóng)業(yè)大學(xué)資源環(huán)境學(xué)院;
【基金】：凱里學(xué)院獲得博士學(xué)位教師(引進(jìn)教授)專(zhuān)項(xiàng)課題(BS201334) 國(guó)家自然科學(xué)基金青年基金項(xiàng)目(41101247)
【分類(lèi)號(hào)】：S153.6;S154.3
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本文編號(hào)：2045643