文章摘要
何梓林, 鲜杨, 孟晓霞, 吴倩兰, 张琪, 伍钧.菌渣生物炭对镉污染土壤性质及小白菜吸收镉的影响[J].水土保持学报,2019,33(1):340~344,352
菌渣生物炭对镉污染土壤性质及小白菜吸收镉的影响
Effects of Mushroom Residues Biochar on Properties of Cadmium-contaminated Soil and Cd Uptake by Chinese Cabbage
投稿时间:2018-08-07  
DOI:10.13870/j.cnki.stbcxb.2019.01.053
中文关键词: 菌渣生物炭  小白菜  土壤理化性质  土壤修复  
英文关键词: mushroom residue biochar  Chinese cabbage  soil physical and chemical properties  soil remediation  Cd
基金项目:四川省科技支撑计划项目(2016NZ0039)
作者单位E-mail
何梓林1, 鲜杨1, 孟晓霞2, 吴倩兰1, 张琪1, 伍钧1 1. 四川农业大学环境学院, 成都 611130

2. 四川省环境保护科学研究院
, 成都 610041 
wuj1962@163.com 
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中文摘要:
      为探讨以菌渣为原料制备的生物炭修复重金属镉污染土壤的可行性。采用盆栽试验,以香菇菌渣生物炭(SC)和平菇菌渣生物炭(PC)为研究对象,设置0.5%,1%,2%的生物炭施用量(w/w,%),研究其对镉污染土壤理化性质、土壤各形态镉分布、小白菜生长及镉吸收的影响。结果表明:施用SC和PC均能显著提高土壤pH和有机质(SOM)含量。与对照相比,2%的生物炭处理,土壤pH分别提高1.05和1.10个单位,SOM含量分别提高80.6%和61.2%。施用SC和PC使土壤可交换态镉降低,而提高残渣态镉含量。相关分析表明,土壤可交换态镉与pH、SOM和蔗糖酶呈显著负相关。与对照相比,2%处理下SC和PC显著降低小白菜镉含量,分别降低57.5%和54.1%;1%用量下小白菜产量分别提高53.4%和41.6%,表明高投加量菌渣生物炭对小白菜生长有不利影响。总体看来,SC和PC均有利于改善土壤性质,减轻镉对植物的毒害,促进小白菜生长。
英文摘要:
      This study was to explore the feasibility of the biochar prepared from fungal residue as raw material for remediation of cadmium (Cd) contaminated soil. A pot experiment was carried out, and Letinous edodes (Berk.) sing residue biochar (SC) and Pleurotus ostreatus (Fr.) Kummer residue biochar (PC) were taken as the research objects, the effects of SC and PC on the physical and chemical properties of Cd contaminated soils, distribution of different forms cadmium in soils, Chinese cabbage growth and Cd accumulation were measured and analyzed. The application rates of 0.5%, 1% and 2% biochar (w/w,%) were set up. The results showed that SC and PC significantly increased soil pH and organic matter (SOM). Compared with the control, 2% biochar application could increase soil pH by 1.05 and 1.10 units, respectively; and increased soil organic matter (SOM) by 80.6% and 61.2%, respectively. Application of SC and PC reduced the content of soil exchangeable Cd and increased the residual Cd concentration. Correlation analysis showed that soil exchangeable Cd was significantly negatively correlated with pH, SOM and sucrase. Compared with the control, Cd accumulation in Chinese cabbage was significantly reduced by 57.5% and 54.1%, respectively, in 2%-SC and 2%-PC treatments. Compared with the control, the yield of Chinese cabbage was increased by 53.4% and 41.6%, respectively, in 1%-treatments, indicating that high dosage of fungal residue had negative effect on the growth of Chinese cabbage. On the whole, SC and PC could improve soil properties, reduce the toxicity of Cd to plants, and promote growth of Chinese cabbage.
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