辽东半岛丘陵区山前冲积平原棕壤剖面土壤化学特性研究

Piedmont Alluvial Plain Hilly Area of Liaodong Peninsula Soil Profile Characteristics of Brown Soil

选取三个辽东半岛丘陵区山前冲积平原典型棕壤为研究区,在野外调查的基础上,运用比重瓶法、重铬酸钾—硫酸氧化法对其棕壤的物理和化学性质进行分析,进一步研究采集土样的土壤特性。研究结果表明:(1)各发生层厚度差异较大,比重从上至下依次增大;(2)同一土壤剖面不同发生层有机质含量从上至下依次递减,全磷依次递增;(3)不同土地利用类型的棕壤中,林地有机质含量最大,果园与菜地有机质含量差异不大;菜地全磷最大,果园与林地差异不显著。这些地区土壤肥力较高,适宜进行农业生产活动。

Hilly area of Liaodong Peninsula select three typical Piedmont alluvial plain brown as the study area,based on field survey,using density bottle method,potassium dichromate—sulfuric acid oxidation of its physical and chemical properties of brown soil analysis further study of the soil characteristics of soil samples collected.The results show that：（1） the occurrence of large differences in thickness,increase the proportion of top to bottom（2） the same layer of soil organic matter content of the different place from the to the next order of decreasing total phosphorus in ascending order of（3） different types of brown soil,land use and forest organic matter content,followed by the orchard,the orchard and vegetable organic matter content, but little difference;vegetable total phosphorus,followed by the orchard However,orchard and woodland was not significant.Higher soil fertility in these areas,suitable for agricultural production activities.