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

• Published in: Agricultural sciences in China Vol. 10; no. 2; pp. 267 - 274
• Main Authors: WU, Fei-long, LIN, Dai-yan, SU, De-chun
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.02.2011; College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, P.R.China; Institute of Agricultural Engineering, Fujian Academy of Agricultural Sciences, Fuzhou 350013, P.R.China%Institute of Agricultural Engineering, Fujian Academy of Agricultural Sciences, Fuzhou 350013, P.R.China%College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, P.R.China
• Subjects: bioaccumulation; bioavailability; Brassica napus var. napus; cadmium; compost; composts; crop rotation; greenhouse experimentation; heavy metal; heavy metals; lead; oilseed rape; oilseeds; organic matter; Oryza sativa; planting; polluted soils; rice; soil amendments; soil pollution; straw; 水稻种植; 污染土壤; 油菜种植; 生物有效性; 重金属形态; 铅浓度; heavy metal; rice; compost; crop rotation; oilseed rape
• ISSN: 1671-2927
• DOI: 10.1016/S1671-2927(11)60004-7

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.