| 孙军娜,董陆康,徐 刚,邵宏波.糠醛渣及其生物炭对盐渍土理化性质影响的比较研究[J].农业环境科学学报,2014,33(3):532-538. |
| 糠醛渣及其生物炭对盐渍土理化性质影响的比较研究 |
| Effects of Furfural and Its Biochar Additions on Physical-chemical Characteristics of a Saline Soil |
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| DOI：10.11654/jaes.2014.03.020 |
| 中文关键词: 糠醛渣 生物炭 总有机碳 阳离子交换量 碱化度 有效磷 |
| 英文关键词: furfural biochar total organic carbon cation exchange capacity exchange sodium percentage available phosphorus |
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| 中文摘要: |
| 为了更好地利用糠醛渣及其炭化产物来改良盐渍土，通过室内56 d的培养试验研究了添加糠醛渣和其生物炭后土壤pH值、电导率、总有机碳、阳离子交换量、碱化度、有效磷、硝氮、氨氮等理化性质的变化。结果表明，糠醛渣加入土壤后能降低土壤pH值，且效果比生物炭显著，2.5％糠醛渣甚至比5％生物炭更易降低盐渍土的pH值。从提高土壤有效磷含量的角度来说，5％的糠醛渣能提高土壤中4~6倍有效磷含量，其改良作用要优于生物炭。与糠醛渣相比，生物炭更能增加土壤总有机碳含量，最大增幅处比糠醛渣高62%。在降低土壤碱化度方面生物炭也比糠醛渣强，5%糠醛渣和生物炭处理土壤碱化度分别为培养初期的51%和43%。同时也发现，生物炭并未比糠醛渣有更高的增加土壤阳离子交换量的能力，这可能与试验周期较短有关。总之，从短期试验效果看，在降低土壤pH值和提高土壤有效磷方面，糠醛渣作用较为显著；而在提高土壤总有机碳含量，降低土壤碱化度方面，生物炭优于糠醛渣。 |
| 英文摘要: |
| So far there is little information available about furfural and its biochar effects on saline soils. Here we conducted an incubation experiment to study the effects of furfural and its biochar applications on soil pH, electricity conductivity, total organic carbon, cation exchange capacity, exchange sodium percentage and available phosphorus of a saline soil during 56 d incubation. Furfural was found to be more effective in influencing soil pH and available phosphorus than its biochar. The decrease of soil pH by 5% biochar was less than that by 2.5% furfural. Compared with the control, applying furfural increased soil available phosphorus by 4 to 6 times , while biochar increased it by 2 to 5 times. However, biochar increased total organic carbon 62% greater than furfural did. In addition, biochar addition reduced soil exchange sodium percentage more effectively than furfural did. No significant difference between furfural and its biochar was found in soil cation exchange capacity. |
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