摘要
本文主要研究了棕壤和黑土＜２μｍ土壤胶体经磁处理后，比表面值的变化以及腐殖质、游离氧化铁、用场强度及胶体水分子持量等对比表面值磁效应的影响。研究结果表明，磁处理（０．１～０．５Ｔ）可明显降低土壤肢体比表面值．不同胶体的比表面值磁降低效应以去腐殖质胶体＞原胶体＞去游离氧化铁胶体为序。不同磁场强度和不同胶体水分子持量分别以０．５Ｔ的磁场和最大吸湿状态下，磁处理后比表面值降低最多。此磁效应可至少保持３个月无明显减弱。
The rsearch results showed that magnetic treatment significantly reduced the specific surface area of bewn earth and black soil. With regard to the different kinds of soil colloids,the reduction brought by magneitc treatment was in the sequence: colloids removed humus <original colloids> colloids removed free oxide iron. In addition, Under the conditions of the magneticfield with an intensity of 0.5T and the maximum capacity of molecular Water, the maximum magnetic effects-the biggest drop of specific surface area of soil colloids were found.Lastly, the experiment also indicated that the above magnetic effects on speciffic surface areacould remain at least three months.
出处
《沈阳农业大学学报》
CAS
CSCD
1995年第2期157-161,共5页
Journal of Shenyang Agricultural University
关键词
比表面
土壤胶体
磁处理
土壤
speciffic surface area
soil colloid
magnetic treatment
