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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。
Based on the field investigation, the typical brown soil in the alluvial plain of the three Liaodong Peninsula hilly areas was selected to study the physical and chemical properties of brown soil by pycnometer and potassium dichromate-sulfuric acid oxidation method. Further study soil characteristics of soil samples collected. The results show that: (1) the thickness of each layer varies greatly, and the specific gravity increases from top to bottom; (2) the content of organic matter in different layers in the same soil profile decreases from top to bottom and then increases in total phosphorus; (3) Among the brown land with different land use types, the content of organic matter in forestland is the largest, and the content of organic matter in orchard and vegetable field is not different; the total phosphorus in vegetable field is the largest, and the difference is not significant in orchard and forestland. Soil fertility in these areas is high, suitable for agricultural production activities.