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The Effect of Planting Oilseed Rape and Compost Application on Heavy Metal Forms in Soil and Cd and Pb Uptake in Rice

文献类型: 外文期刊

作者: Wu Fei-long 1 ; Lin Dai-yan 2 ; Su De-chun 1 ;

作者机构: 1.China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China

2.Fujian Acad Agr Sci, Inst Agr Engn, Fuzhou 350013, Peoples R China

关键词: heavy metal;crop rotation;compost;oilseed rape;rice

期刊名称:AGRICULTURAL SCIENCES IN CHINA ( 影响因子:0.82; 五年影响因子:0.997 )

ISSN: 1671-2927

年卷期: 2011 年 10 卷 2 期

页码:

收录情况: SCI

摘要: Pot experiments were conducted under greenhouse condition to investigate whether Cd and Pb uptake by rice could be reduced when it was rotated with oilseed rape and compost application. The results showed that the rice grown after oilseed rape had significantly lower Cd and Pb concentrations in both straw and grains. Cd and Pb concentrations in the grains of the rice rotated with oilseed rape decreased by approximately 46-80% and 17-86%, respectively, although the Cd and Pb removal by oilseed rape ranged only from 2.39-3.67 and 0.032-0.13% of the total content in soil. Compost amendment also decreased the bioavailability of Cd and Pb in the soil and reduced Cd and Pb uptake by oilseed rapes and rice. The concentrations of Cd and Pb significantly decreased in the exchangeable and carbonate fractions and Pb concentration decreased in the organic matter and sulfide fractions in the contaminated soil after planting oilseed rapes.

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