| 杨放,李心清,王兵,孙璐,何云勇,黄一敏,李阳.热解材料对生物炭理化性质的影响[J].农业环境科学学报,2015,34(9):1822-1828. |
| 热解材料对生物炭理化性质的影响 |
| Effects of Different Feedstocks on Physicochemical Characteristics of Pyrolyzed Biochars |
| 投稿时间：2015-04-13 |
| DOI：10.11654/jaes.2015.09.027 |
| 中文关键词: 生物炭 热解材料 物理化学性质 土壤改良 |
| 英文关键词: biochar feedstock physicochemical characteristics soil amendment |
| 基金项目:中国科学院战略性科技先导专项(XDA05070400);贵州省农业攻关计划项目(黔科合NY字[2011]3079号);中科院院地合作和科技支疆项目,国家重大科学研究计划(2013CB956700-2);贵州省国际科技合作计划项目(黔科合外G字[2012]7050号);中国科学院“西部之光”人才培养计划“西部博士资助项目” |
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| 中文摘要: |
| 生物质的热解材料会对其生物炭的物理化学性质产生较大影响,进而影响其田间应用效果。选取四种乔木(橡树、桑树、樟树和松树)、三种草本植物(芦苇、蒿和蕨类)和两种作物秸秆(玉米秆和油菜秆),在同等热解条件下(550 ℃)制备生物炭,对比其理化性质的差异。结果显示,秸秆生物炭的可溶性Cl-和K+含量、EC和CEC均显著高于乔木和草本生物炭,有效磷也呈现类似规律,而可溶性Na+、Ca2+和Mg2+含量以及pH、SO42-、NH4+-N、NO3--N等指标在三类生物炭之间无显著差异。乔木生物炭和草本生物炭之间在各个指标上均无显著差异。这表明,从营养元素、CEC和改良酸性土壤的角度来看,秸秆生物炭比乔木和草本生物炭更适合作为土壤改良剂。 |
| 英文摘要: |
| Feedstock characteristics strongly influence the physicochemical characteristics of pyrolyzed biochars, thus affecting the effects of biochars. In this research, the physicochemical characteristics of biochars pyrolyzed under the same pyrolysis condition(550 ℃) from nine feedstocks(four arbors:oak, mulberry, camphor tree and pine tree; three shrubs:phragmites, artemisia and fern; two crop straws:rape stalks and corn stalks) were examined. Soluble Cl- and K+, available phosphorus, EC, and CEC were generally higher in the straw-derived biochars than in the arbor- and shrub-derived biochars. However, there was no significant difference in soluble Na+, Ca2+, Mg2+ and SO42-, pH, NH4+-N and NO3--N among the three categories of biochars. From the perspective of the improvements of soil nutrients, CEC, and acidity, straw biochar is preferable over arbor and shrub biochars. |
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