Effect of various modifiers on migration and accumulation of heavy metals

Abstract

Abstract: The effect of combined pollutants Cd,Pb,Cu,Zn and As on rice and soybean growth and their migration and accumulation in soil-plant system under different modifying measures are studied with pot experiment.The results show that the greater the ionic impulsion in crop roots.the heavier the damage to crops is.Acid treatment inhibits crop growth,and treatment with lime and/or humic acid is of advantage to it.The effect of modifiers on migration of heavy metals is in order of acid>humic acid>lime,and the absorption of heavy metals by crops is in order of root>stem and leaf>grain.The migration of heavy metals in soil-plant system decreases in order of Cd>Zn>Cu>As>Pb.

Key words: Combined pollutants, Heavy metal, Soil-plant system, Modifier

Wang Xin, Wu Yanyu, Liang Renlu, Ma Yueqiang. Effect of various modifiers on migration and accumulation of heavy metals[J]. Chinese Journal of Applied Ecology, 1994, 5(1): 89-94.

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Effect of various modifiers on migration and accumulation of heavy metals

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