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以玛咖为试材,在丽江玛咖种植区海拔2 700、2 850、2 950、3 150m处分别采种植玛咖的土壤和未种植玛咖的土壤,用化学方法测定样品中的速效氮、速效磷、速效钾含量及pH值,研究了丽江市种植玛咖对土壤速效氮、速效磷、速效钾含量及pH值的影响。结果表明:种植玛咖后土壤中的速效氮、速效钾含量降低;种植玛咖后土壤中的速效磷含量高于种植前;部分地区种植玛咖后土壤的酸性增强。
Taking maca as the test material, the soil of maca and the soil not planted with maca were planted at 2 700, 2 850, 2 950 and 3 150 m above sea level in the macao planting area of lijiang, respectively. The available nitrogen , Available phosphorus, available potassium and pH, the effects of planting maca on soil available nitrogen, available phosphorus, available potassium and pH value were studied. The results showed that the content of available nitrogen and available potassium in the soil decreased after planting maca, the content of available phosphorus in the soil after planting maca was higher than that before planting, and the acidity of the soil was increased after planting maca in some areas.