| 污泥施肥铅对作物污染的研究 |
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| 引用本文： | 杨卓亚,王宏康.污泥施肥铅对作物污染的研究[J].环境科学,1993,14(6):8-11,37. |
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| 作者姓名： | 杨卓亚 王宏康 |
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| 作者单位： | 北京农业大学资源与环境学院，北京农业大学资源与环境学院 北京 100094，北京 100094 |
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| 摘 要： | 采用盆栽和小区试验，研究在石灰性土壤上污泥施肥进铅污染对水稻和大豆生产发育的影响，两种作物对土壤中铅的吸收，迁移和累积规律。结果表明，铅投加量为２０００ｍｇ／ｋｇ时，水稻和大豆的产量降至低于对照９０％以下；铅投加量为３０００ｍｇ／ｋｇ时，大豆籽粒铅含量仍未超过１ｍｇ／ｋｇ；但土壤中铅含量为２６０ｍｇ／ｋｇ时，水稻盆载糙米中的铅含量达到１ｍｇ／ｋｇ。根据试验结果建议将污泥农田施用时铅的控制标准修订为
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| 关 键 词： | 污泥 大豆 水稻 控制标准 |
| 收稿时间： | 1993/3/30 0:00:00 |
Crops Lead Pollution by Sludge Land Application |
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| Yang Zhuoya and Wang hongkang.Crops Lead Pollution by Sludge Land Application[J].Chinese Journal of Environmental Science,1993,14(6):8-11,37. |
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| Authors: | Yang Zhuoya and Wang hongkang |
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| Institution: | Resource and Environment College, Beijing Agricultural University, Beijing, 100094;Resource and Environment College, Beijing Agricultural University, Beijing, 100094 |
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| Abstract: | Pot experiments and field trails were conducted to study the effect of soil lead levels on phytotoxicity, growth and tissue accumulation in soybean and rice grown on sludge treated calcareous soil. The results indicated that lead didn' t cause significant growth depression symptoms of the two crops. The lead tolerabilities of two crops were equal. As a whole , the higher lead concentration in soil would bring about higher lead concentration in crops tissue. The lead accumulation rate of the two crops was different, soybean absorbed fewer lead than rice. Soil lead concentration 260mg/kg would make rice seed lead concentration to reach 1mg/kg. This value was suggested as critical level in the soil, and 600mg/kg was calculated as maximum permissible concentration in sludge when it is applied on cropland. |
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| Keywords: | lead sludge soybean rice control standard |
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