| 沼液连续浇灌对茶园土壤铅形态及生物有效性的影响研究 |
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| 引用本文： | 刘术新,李赛慧,丁枫华.沼液连续浇灌对茶园土壤铅形态及生物有效性的影响研究[J].农业科学与技术,2017,18(4). |
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| 作者姓名： | 刘术新 李赛慧 丁枫华 |
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| 作者单位： | 1. 丽水职业技术学院,浙江丽水,323000;2. 丽水市莲都区土肥植保站,浙江丽水,323000;3. 丽水学院,浙江丽水,323000 |
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| 基金项目： | 浙江省教育厅科研资助项目，丽水市公益项目，丽水市高层人才资助项目，丽水市农业科技成果转化项目(2012NZH0205).Supported by Scientific Research Project of Education Department of Zhejiang Province，Public Welfare Project of Lishui City，Project for Highlevel Talents of Lishui City，Project for the Transformation of Agricultural Scientific and Technological Achievements |
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| 摘 要： | 采用室内培养试验研究沼液连续浇灌对茶园土壤铅形态及生物有效性的影响.研究结果表明:沼液连续浇灌能改变土壤中Pb的形态,土壤中Pb的离子交换态、铁锰氧化物结合态、碳酸盐结合态向有机物结合态和残渣态转化.沼液连续浇灌各处理铅形态的分布中残渣态含量最高,T1处理残渣态占54.56%,T2处理残渣态占60.00%,T3处理残渣态占60.70%.与对照相比,施用沼液显著降低重金属Pb的生物活性和生物有效性,可使生物活性降低21.26%~22.83%.可见,茶园土壤施用沼液能抑制重金属Pb的生物活性和生物有效性.
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| 关 键 词： | 沼液 茶园 铅 形态 生物有效性 |
Effects of Continuous Irrigation of Biogas Slurry on Forms and Biological Availability of Pb in Soil of a Tea Garden |
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| Shuxin LIU,Saihui LI,Fenghua DING.Effects of Continuous Irrigation of Biogas Slurry on Forms and Biological Availability of Pb in Soil of a Tea Garden[J].Agricultural Science ＆ Technology,2017,18(4). |
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| Authors: | Shuxin LIU Saihui LI Fenghua DING |
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| Abstract: | Through indoor culture experiments, the effects of continuous irrigation of biogas slurry on the forms and biological availability of Pb in soil of a tea garden were studied. The results show that continuous irrigation of biogas slurry could change the forms of Pb in the soil, and exchangeable Pb, Pb bonded to iron and manganese oxides, and Pb bonded to carbonates transformed to Pb bonded to organic matter and residual Pb in the soil. Among various forms of Pb in the soil, the content of residual Pb was the highest in the soil irrigated with biogas slurry continuously in various treatments, accounting for 54.56% , 60.00% and 60.70% in the treatments T1, T2 and T3 respectively. Compared with the CK, the application of biogas slurry could decrease the biological activity and biological availability of Pb in the soil obviously, and the reduction of the biological activity was 21.26%-22.83%.In a word, the application of biogas slurry in soil of the tea garden could inhibit the biological activity and biological availability of Pb. |
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| Keywords: | Biogas slurry Tea garden Pb Form Biological availability |
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