地理科学 ›› 1981, Vol. 1 ›› Issue (2): 171-180.doi: 10.13249/j.cnki.sgs.1981.02.171

• 研究报导 • 上一篇    下一篇

三江平原沼泽土壤的发生、性质与分类

张养贞   

  1. 中国科学院长春地理研究所
  • 出版日期:1981-03-20 发布日期:1981-03-20

THE GENESIS,NATURE AND CLASSIFICATION OF THE MARSHY SOIL OF SANJIANG PLAIN

Zhang Yangzhen   

  1. Changchun Institute of Geography, Academia Sinica
  • Online:1981-03-20 Published:1981-03-20

摘要: 三江平原位于我国东北端,是由黑龙江、松花江、乌苏里江和兴凯湖冲积而成的低平原,总面积约51300平方公里。由于平原内部地势平坦,地面坡降小,土质粘重、渗透困难,沼泽土壤广泛发育,是我国沼泽土壤集中分布的地区之一。沼泽土壤主要分布在浓江、别拉洪河、挠力河、七星河、阿布沁河、七虎林河、穆棱河、松阿查河的河漫滩及阶地上的低洼地,水城子古河道,以及大小兴凯湖湖滨。面积13700余平方公里。

Abstract: Sanjing Plain is situated in the northeast part of China.It is one of the areas where marshy soil is widely spread.The area qf marshy soil is over 13,700 km2,about one fourth of the total plain area.Most of the marshy area of Sangjiang Plain belong to the marshy soil without peat accumulation.There is a rom humus horizon(10-20cm thick)between the grass-root and the gley horizon. The marshy soil of Sanjiang Plain may be divided into two great groups, six sub-groups and ten kinds. The textures of most of the marshy soil belong to loam clay—clay.The volume weight of surface stratum is 0.1—0.8 g/cm3.The content of organic matter varies with different sub-groups of marshy soil.The exchangeable cation is about 30—70 m.e/100g,the exchangeable base is 20-40 m.e/100g.The nitrogen content of the marshy soil is sufficient,but contents of phosphorus and potassium are not sufficient;the pH value is 5—7. The marshy soil is a kind of valuable soil resources by which after reclamation,we can develop agriculture,animal husbandry,reed breeding and fertilizermaking,etc.