摘要
Hg in acid soil could be activited by liming and become available to plant, if excessive or insufficient amount of lime was applied. The changes of Hg activity in acid soil with different rates of CaCO3 amendment Were studied by a pot experiment. To predict the adequate amount of lime application, a simple method using the pH (EDTA) as an indicator was suggested. The suitable range of lime application was the amount of lime addition when the pH of soil-EDTA system was.raised to 4.0-4.3.
Hg in acid soil could be activited by liming and become available to plant,if excessive or insufficient amount of line was applied.The changes of Hg activity in acid soil with different rates of CaCO3 amendment were studied by a pot experiment.To predict the adequate amount of lime application,a simple method using the pH(EDTA) as an indicator was suggested.The suitable range of lime application was the amount of lime addition when the pH of soil-EDTA system was raised to 4.0-4.3.
