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Comparison of three types of oil crop rotation systems for effective use and remediation of heavy metal contaminated agricultural soil.
Yang, Yang; Zhou, Xihong; Tie, Boqing; Peng, Liang; Li, Hongliang; Wang, Kelin; Zeng, Qingru.
Afiliación
  • Yang Y; College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, Hunan, China; Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, Hunan, China; Huanjiang Observation and Rese
  • Zhou X; College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, Hunan, China.
  • Tie B; College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, Hunan, China.
  • Peng L; College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, Hunan, China.
  • Li H; College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, Hunan, China.
  • Wang K; Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, Hunan, China; Huanjiang Observation and Research Station for Karst Ecosystems, Huanjiang, 547100, Guangxi, China.
  • Zeng Q; College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, Hunan, China; College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, Hunan, China. Electronic address: qrzeng@163.com.
Chemosphere ; 188: 148-156, 2017 Dec.
Article en En | MEDLINE | ID: mdl-28881242
Selecting suitable plants tolerant to heavy metals and producing products of economic value may be a key factor in promoting the practical application of phytoremediation polluted soils. The aim of this study is to further understand the utilization and remediation of seriously contaminated agricultural soil. In a one-year field experiment, we grew oilseed rape over the winter and then subsequently sunflowers, peanuts and sesame after the first harvest. This three rotation system produced high yields of dry biomass; the oilseed rape-sunflower, oilseed rape-peanut and oilseed rape-sesame rotation allowed us to extract 458.6, 285.7, and 134.5 g ha-1 of cadmium, and 1264.7, 1006.1, and 831.1 g ha-1 of lead from soil, respectively. The oilseed rape-sunflower rotation showed the highest phytoextraction efficiency (1.98%) for cadmium. Lead and cadmium in oils are consistent with standards after extraction with n-hexane. Following successive extractions with potassium tartrate, concentrations of lead and cadmium in oilseed rape and peanut seed meals were lower than levels currently permissible for feeds. Thus, this rotation system could be useful for local farmers as it would enable the generation of income during otherwise sparse phytoremediation periods.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Arachis / Contaminantes del Suelo / Metales Pesados / Sesamum / Producción de Cultivos / Helianthus Tipo de estudio: Guideline País/Región como asunto: Asia Idioma: En Revista: Chemosphere Año: 2017 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Arachis / Contaminantes del Suelo / Metales Pesados / Sesamum / Producción de Cultivos / Helianthus Tipo de estudio: Guideline País/Región como asunto: Asia Idioma: En Revista: Chemosphere Año: 2017 Tipo del documento: Article Pais de publicación: Reino Unido