论文部分内容阅读
为研究风蚀引起的土壤营养物质的流失,进一步理清土壤沙化的原因及机理,该文以内蒙古阴山北部的典型农牧交错带耕地为试验区,采用SCC-6型集沙仪收集跃移土壤风蚀物,对收集到的土壤风蚀物进行筛分、称质量,并对表层土壤及收集的土壤风蚀物采用化学滴定及火焰原子吸收分光光度法对土壤营养物质中的主要成分及部分金属元素组成进行测定。通过分析整理,得出了风蚀物各化学组分含量、各化学组分总质量在地面垂直高度的分布规律,以及土壤各化学组分含量、土壤粒径大小与风蚀程度的相关关系;通过化学组分含量的分布规律分析进一步验证了风蚀是使细小颗粒的损失,造成土壤贫瘠的主要因素。
In order to study the loss of soil nutrients caused by wind erosion and to further clarify the causes and mechanism of soil desertification, this paper took arable land in the typical farming-pastoral ecotone in northern Yinshan of Inner Mongolia as experimental area, Wind erosion, the collected soil erosion objects were screened, said the quality, and on the surface soil and collected soil erosion by chemical titration and flame atomic absorption spectrophotometry soil nutrients in the main components and some metal elements Measurement was performed. By analyzing and finishing, the content of each chemical component of wind erosion, the distribution of the total mass of each chemical component at the vertical height of the ground, the content of each chemical component, the size of soil and the degree of wind erosion were obtained. Analysis of the distribution of the component content further verified that wind erosion is the main factor that causes the loss of fine particles and causes soil infertility.