宁夏马铃薯种植基地土壤养分状况及施肥建议

Nutrient Status of Soil in Potato-grown Field of Ningxia and Recommendations for Fertilizers

于马铃薯成熟收获前,在宁夏干旱半干旱地区主要马铃薯种植基地采集土壤样品（0～30 cm）,测试有机质、碱解氮、全磷等共8项基础理化指标.结果表明,总体养分现状表现为缺有机质、低氮、磷丰富、钾适宜;养分含量地区性差异都表现为南部山区大于中部干旱带.对此现状进行了可能性分析后,初步提出不同目标产量下氮、磷、钾肥的推荐施肥量.

Soil samples （0～30cm） were collected before potato harvest in the main potato-grown field in arid and semi-arid area of Ningxia province.Eight nutrient indexes including organic matter,hydrolysable nitrogen,total phosphorus and so on were analyzed.The results showed that the situation of the main potato-grown field in Ningxia was lack of organic matter,low nitrogen,abundant of phosphorus,suitable of potassium.The amount of soil nutrients in southern mountain was higher than that in middle arid zone of Ningxia.The yield-specific NPK recommendations after feasibility analysis were proposed.