有机物料和钝化剂对低环境容量土壤黑麦草吸收积累Cd及其平衡的影响
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(1.中南大学研究生院隆平分院,湖南 长沙 410125;2.湖南省土壤肥料研究所,湖南 长沙 410125;3.农业部长江中游平原农业环境重点实验室,湖南 长沙410125)

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谢运河(1982-),男,湖南新化人,在职博士,主要从事农业生态环境研究;通讯作者:纪雄辉。

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国家科技支撑计划课题(编号:2012BAD14B17-1);湖南省科技重大专项(编号:2011FJ1002-3);长沙市科技计划项目(编号:K1104137-21)。


Effects of Different Organic Materials and Passivators on Cadmium Uptaking and Balance of Ryegrass in Low Environmental Capacity Soil
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(1.Longping Branch of Graduate School, Central South University, Changsha, Hunan 410125, China;2.Soil and Fertilizer Institute of Hunan Province, Changsha, Hunan 410125, China;3. Ministry of Agriculture Key Lab of Agri-Environment in the Midstream of Yangtze River Plain, Changsha, Hunan 410125, China)

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    摘要:

    采用田间小区试验,研究有机物料、钝化剂及其配施对南方典型酸性低环境容量土壤黑麦草生长与吸收积累Cd的影响。结果表明,施用有机肥处理比施化肥处理增产35.76%(p<0.05),其他处理间产量无显著差异;增施石灰处理使土壤pH值比单施化肥处理提高0.79,土壤有效态Cd含量降低19.34%;增施赤泥可提高土壤pH值,改良土壤酸性,施用有机肥则可缓解土壤酸化进程;有机肥和钝化剂都可降低Cd的生物有效性,降低黑麦草植株Cd含量;有机肥处理黑麦草植株Cd含量比化肥处理低42.71%(p<0.05)。采用有机-中性化技术可实现饲草安全生产与土壤酸性改良的双重目的,但应控制有机物料的Cd含量(<0.2 mg/kg)、或者减少有机物料的施用量,以确保饲草质量安全与土壤的可持续利用。

    Abstract:

    A field plot experiment was conducted to study the effect of different passivators, organic materials and their combined application on the growth of ryegrass, Cd uptaking and balance in low environmental capacity soil. The results showed that the yield of ryegrass was increased significantly by 35.76% after applied of organic fertilizer as compared with the control. Application of lime significantly increased soil pH by 0.79 and decreased the available Cd content by 19.34% compared to the control. Similarly, the increase of soil pH was observed after applied of red mud; the using of organic manure could also relief the proceeding of soil acidity effectively. In this experiment, the lime, the red mud and the organic manure all could restrain the bio-availability of Cd and decreased Cd content in ryegrass, especially, the organic manure had the best effectiveness to Cd reduction by 42.71%(p<0.05) compared with the control. Organic-neutralization technology could achieve the purposes of safety ryegrass production and soil acidity modification with low Cd content(<0.2 mg/kg) organic materials or decreasing the use level of organic material to ensure the ryegrass’s quality and soil sustainable use.

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谢运河,纪雄辉,刘昭兵,黄 涓. 有机物料和钝化剂对低环境容量土壤黑麦草吸收积累Cd及其平衡的影响[J]. 农业现代化研究, 2014, 35(2): 229-233
XIE Yun-he, JI Xiong-hui, LIU Zhao-bing, HUANG Juan. Effects of Different Organic Materials and Passivators on Cadmium Uptaking and Balance of Ryegrass in Low Environmental Capacity Soil[J]. Research of Agricultural Modernization, 2014, 35(2): 229-233

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  • 收稿日期:2013-10-24
  • 最后修改日期:2014-01-22
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  • 在线发布日期: 2014-04-04
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