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采用主因子分析对宁南阴湿易旱区影响春小麦产量的养分及土壤水分等１０因子进行分析，结果表明：氮素与小麦分蘖期到灌浆期的土壤含水量呈显著正相关；速效氮及拔节期土壤含水量与产量呈显著正相关。因此，在增产措施中，应采用增施氮肥、有机肥，适量施用磷肥的方法，并结合秋深耕、春免耕等措施。
The main factor analysis was used to analyze 10 factors affecting the yield of spring wheat and soil moisture in overwintering and drought - prone areas in southern Ningxia. The results showed that nitrogen and soil water content at tillering stage to filling stage were significantly positively correlated. Available nitrogen and Soil water content at jointing stage was significantly and positively correlated with grain yield. Therefore, in the stimulation measures, we should adopt the methods of increasing N fertilizer, organic fertilizer and applying phosphate fertilizer moderately, combined with the measures of autumn deep plowing and spring no tillage.