本文選題：生物質(zhì)炭 + 紅壤��； 參考：《水土保持學報》2017年02期

【摘要】：為探究生物質(zhì)炭施入旱地紅壤后對該地區(qū)土壤有機碳礦化以及有機碳庫的影響,采用田間定位試驗,設(shè)置7種生物質(zhì)炭施用量處理,分別為0(C0),2.5(C1),5(C2),10(C3),20(C4),30(C5),40t/hm2(C6),以三庫一級動力學理論為基礎(chǔ),對這7種處理的土樣進行了室內(nèi)呼吸培養(yǎng)試驗。結(jié)果表明:(1)與C0相比,C4、C5和C6處理的土壤有機碳含量呈上升趨勢,C5處理土壤有機碳含量上升幅度最大為14.66%;C2、C3、C4、C5和C6處理土壤活性碳均顯著增加,C6處理增幅最大為25.00%;土壤惰性碳在C3、C4、C5和C6處理中顯著增加,增幅分別為18.92%,40.09%,53.60%和49.55%;除C5處理外,其他生物質(zhì)炭施用量下土壤緩性碳相對于C0處理,分別降低了1.96%,6.54%,8.82%,9.31%和12.91%。(2)與C0處理相比,施加生物質(zhì)炭后土壤有機碳累積礦化量均顯著降低,C6處理降低幅度達25.93%。隨著生物質(zhì)炭施用量的增加,土壤有機碳累積礦化量逐漸降低。(3)土壤有機碳、活性碳和惰性碳與生物質(zhì)炭施用量存在極顯著(p0.01)的正相關(guān),土壤緩性碳與其存在顯著(p0.05)的負相關(guān)。研究結(jié)果可為提升典型旱地紅壤肥力,減緩溫室氣體排放提供科學依據(jù)。
[Abstract]:In order to investigate the effect of biomass carbon application on soil organic carbon mineralization and organic carbon pool in upland red soil, seven kinds of biomass carbon treatments were set up by field location experiment, which were 0 ~ (10) C _ (2) C _ (2) C _ (2) C _ (3) ~ (10) C _ (3) C _ (3) ~ (20) C _ (5) ~ (30) t ~ (40) t ~ (-1) ~ (2) C _ (6) C _ (6), based on the first-order kinetic theory of three reservoirs. The indoor respiratory culture experiments were carried out on the seven treated soil samples. The results showed that compared with C0, the soil organic carbon contents of C _ (4) C _ (5) and C _ (6) treatments showed an increasing trend. The soil organic carbon contents of C _ (5) treatment and C _ (5) treatments increased significantly by 14.66 C _ (2) C _ (3) C _ (4) C _ (5) and C _ (6) treatments respectively. Inert carbon increased significantly in C3C4C5 and C6 treatments. The increases were 18.922.40.09% and 49.55%, respectively. In addition to C5 treatment, soil slow carbon decreased by 1.96% 6.54% 8.82% and 12.91% respectively in comparison with C0 treatment. The accumulation and mineralization of soil organic carbon were significantly reduced by C6 treatment by 25.93% after applying biomass carbon. With the increase of biomass carbon application rate, the cumulative mineralization amount of soil organic carbon decreased gradually. (3) soil organic carbon, active carbon and inert carbon had a very significant positive correlation with biomass carbon application rate (p 0.01), and soil slow carbon had a significant negative correlation with soil organic carbon application rate (p 0.05). The results can provide scientific basis for improving fertility of typical upland red soil and reducing greenhouse gas emission.
【作者單位】： 南京農(nóng)業(yè)大學資源與環(huán)境科學學院;南京信息工程大學應(yīng)用氣象學院;
【基金】：耕地地力影響化肥養(yǎng)分利用的機制與調(diào)控(2016YFD0200305) 江蘇省自然科學基金項目(SBK2015040286) 中國博士后基金項目(2016M591884)
【分類號】：S153.6

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本文編號：1972745