| 严格管控类耕地特定农作物重金属安全性评估 |
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| 引用本文： | 张慧敏,鲍广灵,周晓天,高琳琳,胡宏祥,马友华.严格管控类耕地特定农作物重金属安全性评估[J].中国农学通报,2022,38(3):52-58. |
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| 作者姓名： | 张慧敏 鲍广灵 周晓天 高琳琳 胡宏祥 马友华 |
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| 作者单位： | 安徽农业大学资源与环境学院,农田生态保育与污染防控安徽省重点实验室,合肥 230036 |
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| 基金项目： | 国家重点研发计划项目“都市农区镉砷污染防治与生态安全保障技术示范”(2018YFD0800203)；;国家重点研发计划项目子课题“农田Cu、Cd重金属中重度污染防控技术集成与示范”(2016YFD0801104)；;安徽省科技重大攻关项目“农田重金属污染高效纳米修复材料的开发与应用”(17030701053)； |
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| 摘 要： | 严格管控类耕地是指土壤重金属(镉、汞、砷、铅、铬)含量超过《土壤环境质量农用地风险管控标准》(GB15618-2018)中风险管制值的耕地.本文对严格管控类耕地种植可食用农作物的重金属安全性进行了评估,旨在为严格管控类耕地种植结构调整以及受污染耕地安全利用提供参考.现有的研究表明,严格管控类耕地种植油料作物,如油菜、花...
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| 关 键 词： | 严格管控类耕地 重金属 食品安全 油料作物 玉米 茶树 |
| 收稿时间： | 2021-03-04 |
Safety Assessment of Heavy Metals in Specific Crops of Strictly Controlled Farmland |
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| ZHANG Huimin,BAO Guangling,ZHOU Xiaotian,GAO Linlin,HU Hongxiang,MA Youhua.Safety Assessment of Heavy Metals in Specific Crops of Strictly Controlled Farmland[J].Chinese Agricultural Science Bulletin,2022,38(3):52-58. |
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| Authors: | ZHANG Huimin BAO Guangling ZHOU Xiaotian GAO Linlin HU Hongxiang MA Youhua |
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| Institution: | Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036 |
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| Abstract: | Strictly controlled farmland refers to the cultivated land with heavy metals’ contents (cadmium, mercury, arsenic, lead and chromium) exceeding the risk control standard specified by Soil Environmental Quality Agricultural Land Risk Control Standards (GB15618-2018). This article evaluated the safety of planting edible crops in strictly controlled farmland, aiming to provide reference for cultivation structure adjustment in strictly controlled farmland, as well as the safe use of contaminated farmland. Present research indicates that the heavy metals in the seeds easily exceed the standards when oil crops, such as rape, peanut, sesame and sunflower, are cultivated in strictly controlled farmland, while heavy metals’ (such as As and Pb) contents in vegetable oil are lower than the safety limits, and the oil is safe for diet. But for Camellia oleifera seed oil, the excessive rate of heavy metals is relatively high, so it is necessary to further evaluate the heavy metals’ accumulation characteristics of Camellia oleifera varieties, and the safety of Camellia oleifera seed oil. Seed meals could be used as animal feeds and organic fertilizers after the removal of heavy metals, which could maximize the utilization of resources. Nevertheless, there is a risk of excessive heavy metals in maize silage cultivated in strictly controlled farmland, while the risk in maize grains is relatively low, and the low heavy metal accumulation maize varieties could be further screened to achieve the purpose of safe production of grains. The safety of heavy metals in tea should be further studied in strictly controlled farmland. Furthermore, it is necessary to improve the standard system of heavy metal safety limits of edible crops, strengthen the research and development of straw treatment and resource utilization technologies, and establish an ecological compensation mechanism of specific crop straw recycling in strictly controlled farmland. |
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| Keywords: | strictly controlled farmland heavy metals food safety oil crops maize tea tree |
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