以宁夏环香山地区农田压砂地为研究对象,对压砂不同种植年限(CK,1a,3a,5a,15a,25a)下的土壤肥力及其相关因子进行了研究。结果表明:农田压砂后能显著提高土壤贮水量,压砂不同种植年限下的土壤贮水量分别比农田CK提高了68.5%,50.12%,40.42%,60.03%,44.39%。受季节降雨的影响,压砂不同种植年限土壤贮水量的季节变化趋势相一致。农田压砂种植初期(1～5a)显著降低了pH值,随着种植年限的增加PH值含量基本呈增加趋势。农田压砂后明显降低了土壤全氮、全磷、有机质、碱解氮、速磷、速钾的含量,且随着种植年限的增加呈逐年下降的趋势。随着种植年限的增加西瓜产量呈明显下降趋势,农田压砂种植5～8a,10a,15a,20a分别比压砂种植1～3a产量下降了33.33%,38.89%,55.56%,71.11%。 Taking the farmland compacted sandy land in Huanxian Mountain of Ningxia as the research object, the soil fertility and related factors under different planting years (CK, 1a, 3a, 5a, 15a, 25a) of sand were studied. The results showed that the soil water storage capacity was significantly increased after sand was squeezed into the farmland. The soil water storage capacity under different planting ages of sand was increased by 68.5%, 50.12%, 40.42%, 60.03% and 44.39%, respectively. Affected by the seasonal rainfall, the seasonal variation trend of soil water storage under different planting years of sand was consistent. In the early stage of farmland sandstorm planting (1 ~ 5a), the pH value was significantly reduced. With the increase of planting years, the PH value basically increased. The content of total nitrogen, total phosphorus, organic matter, available nitrogen, fast phosphorus and potassium in soil decreased obviously after the sand was crushed in farmland, and decreased with the increase of planting years. With the increase of planting years, the yield of watermelon decreased obviously. The yield of farmland sandstorm decreased by 33.33%, 38.89%, 55.56% and 71.11% respectively from 5 to 8a, 10a, 15a and 20a for 1-3 days.