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辽宁昌图县玉米种植区棕壤进行实地调查后采集具有代表性的土壤样品进行分析测定。经测试分析:该地区土壤有效氮含量较低,平均为83.8 mg kg-1;有效磷含量“极高,”平均为35.1 mg kg-1;有效钾含量较低,平均为97.3 mg kg-1。
The brown soil of maize planting area in Changtu County of Liaoning Province was investigated on the spot and representative soil samples were collected for analysis and determination. The results showed that soil available N content in the area was low, with an average of 83.8 mg kg-1; available P was extremely high, with an average of 35.1 mg kg-1; and available potassium was low with an average of 97.3 mg kg -1.