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首页> 外文期刊>Agriculture, Ecosystems & Environment: An International Journal for Scientific Research on the Relationship of Agriculture and Food Production to the Biosphere >Biochar and biochar-compost as soil amendments: Effects on peanut yield, soil properties and greenhouse gas emissions in tropical North Queensland, Australia
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Biochar and biochar-compost as soil amendments: Effects on peanut yield, soil properties and greenhouse gas emissions in tropical North Queensland, Australia

机译：生物炭和生物炭堆肥作为土壤改良剂：对澳大利亚北昆士兰州热带地区花生产量，土壤特性和温室气体排放的影响

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摘要

This study investigated the effects of biochar and compost, applied individually or together, on soil fertility, peanut yield and greenhouse gas (GHG) emissions on a Ferralsol in north Queensland, Australia. The treatments were (1) inorganic fertilizer only (F) as a control; (2) 10 t ha(-1) biochar + F (B +F); (3) 25 t compost +F (Com +F) ha-1; (4) 2.5t B ha(-1) + 25 t Com ha-1 mixed on site +F; and (5) 25 t ha(-1) cocomposted biochar-compost + F (COMBI + F). Application of B and COMBI increased seed yield by 23% and 24%, respectively. Biochar, compost and their mixtures significantly improved plant nutrient availability and use, which appeared critical in improving peanut performance. Soil organic carbon (SOC) increased from 0.93% (F only) to 1.25% (B amended), soil water content (SWC) from 18% (F only) to over 23% (B amended) and CEC from 8.9 cmol(+)/kg (F only) to over 103 cmol(+)/kg (organic amended). Peanut yield was significantly positively correlated with leaf chlorophyll content, nodulation number (NN), leaf nutrient concentration, SOC and SWC for the organic amendments. Fluxes of CO2 were highest for the F treatment and lowest for the COMBI treatment, whereas N2O flux was highest for the F treatment and all organic amended plots reduced N2O flux relative to the control. Principal component analysis indicates that 24 out of 30 characters in the first principal component (PRIN1) individually contributed substantial effects to the total variation between the treatments. Our study concludes that applications of B, Cam, B +Com or COMBI have strong potential to, over time, improve SOC, SWC, soil nutrient status, peanut yield and abate GHG fluxes on tropical Ferralsols. Crown Copyright (C) 2015 Published by Elsevier B.V. All rights reserved.
机译：这项研究调查了在澳大利亚昆士兰州北部的Ferralsol上单独或一起施用生物炭和堆肥对土壤肥力，花生产量和温室气体（GHG）排放的影响。处理方法是（1）仅以无机肥料（F）为对照; （2）10吨ha（-1）生物炭+ F（B + F）; （3）25吨堆肥+ F（Com + F）ha-1; （4）2.5t B ha（-1）+ 25 t Com ha-1在现场+ F混合; （5）25 t ha（-1）共同堆肥了biochar-compost + F（COMBI + F）。 B和COMBI的施用分别使种子产量增加了23％和24％。生物炭，堆肥及其混合物显着提高了植物养分的利用率和利用率，这对于提高花生的生长性能至关重要。土壤有机碳（SOC）从0.93％（仅F）增加到1.25％（B修正），土壤水分（SWC）从18％（仅F）增加到23％（B修正），CEC从8.9 cmol（+ ）/ kg（仅F）到超过103 cmol（+）/ kg（有机修饰物）。花生产量与叶片叶绿素含量，结瘤数（NN），叶片养分浓度，SOC和SWC呈显着正相关。 F处理的CO2通量最高，而COMBI处理的CO2通量最低，而F处理的N2O通量最高，并且所有有机改良地块均降低了N2O通量。主成分分析表明，第一个主成分（PRIN1）中的30个字符中有24个分别对处理之间的总变异有实质性影响。我们的研究得出的结论是，随着时间的推移，B，Cam，B + Com或COMBI的应用具有强大的潜力，可改善热带Ferralsols上的SOC，SWC，土壤养分状况，花生产量和降低的温室气体通量。 Crown版权所有（C）2015，Elsevier B.V.保留所有权利。

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