[关键词]
[摘要]
对永登县龙泉镇和柳树乡作物收获后的64份耕层土样化验分析表明,种植不同作物地块有机质含量处于中下水平(10~20 g/kg),全氮处于中上水平(1.0~1.5 g/kg),碱解氮处于中下水平(60~90 mg/kg)。不同行政区土壤有机质、全氮、全钾含量较第二次土壤普查时增加4.5、0.3、1.8 g/kg;土壤碱解氮、土壤速效磷、速效钾较第二次土壤普查时增加25.26、13.74、37.60 mg/kg;土壤全磷平均含量与第二次土壤普查时相比变化不明显。由此可见,永登县龙泉镇和柳树乡8个行政村不同作物布局区土壤有机质均处于贫乏状态,速效氮有所提高但还是比较缺乏,速效磷处于中等偏上水平,速效钾处于丰富水平但呈下降趋势。
[Key word]
[Abstract]
The 64 soil samples of Longquan town and Liushu township in Yongdeng county after crop harvest laboratory analysis shows that organic matter content in the lower level(10~20 g/kg), the total nitrogen in the upper level(1.0~1.5 g/kg), alkaline nitrogen is lower level(60~90 mg/kg) in different crop plots. In different administrative region, the soil organic matter, total nitrogen and total potassium content compared with the second soil survey increased by 4.5, 0.3, 1.8 g/kg; soil alkaline nitrogen, soil available phosphorus and potassium than the second soil survey increased by 25.26, 13.74 and 37.60 mg/kg; the average soil total phosphorus content when compared with the second soil survey did not change obviously. Thus, 8 administrative villages in Yongdeng County, Longquan town and willow Township different crop distribution of soil organic matter in poor state, available nitrogen increased, but lack of available, phosphorus is in the middle level, available potassium is in a rich level, but it is in a downward trend.
[中图分类号]
S158
[基金项目]
甘肃省永登县利用世界银行贷款实施可持续发展农业项目(GSYDT15005)部分内容。