借助GIS和数学模型集成技术，评价荔城区中低产耕地及其障碍因素，结果表明全区中、低产耕地面积分别为2293.39公顷和1594.97公顷, 分别占保护区耕地总面积的25.49%和17.72%; 中产耕地主要分布于北高和新度镇，而低产耕地则主要分布于北高镇; 中产耕地主要限制因素为旱限制、缺钙限制、瘠瘦限制、缺钾限制、缺磷限制和酸限制，分别占中产耕地总面积的88.76％、18.26％、15.48％、8.18％、7.91％和6.53％，低产耕地主要限制因素为旱限制、缺钙限制、瘠瘦限制、障碍层限制、渍涝限制、盐碱限制和酸限制，分别占低产耕地总面积的96.98％、58.31％、54.89％、18.90％、18.47％、18.47％和16.28%。在中低产耕地及其障碍因素评价的基础上，提出了区域中低产耕地的改良利用对策。

The cropland with middle and low production and its limiting factors were evaluated based on the integrated technologies of GIS and mathematic model in Licheng county. The results showed that the areas of middle and low production cropland were 2293.39 hm2 and 1594.97hm2, which were 25.49% and 17.72% of total protecting cropland in Licheng, respectively. The middle production cropland mainly distributed in Beigao and Xindu town, and the low production cropland mainly distributed in Beigao town. The major limiting factors of middle production cropland were drought, calcium deficiency, poor, potassium deficiency, phosphorus deficiency and acid limitation, which were 88.76％、18.26％、15.48％、8.18％、7.91％and 6.53％of total middle production cropland, and those of low production cropland were drought, calcium deficiency, poor, obstacle horizon, waterlogging, saline-sodic and acid limitation, which were 96.98％、58.31％、54.89％、18.90％、18.47％、18.47％and 16.28% of total low production cropland. The improvement and use countermeasures of regional cropland with middle and low production were discussed and suggested based on the evaluating results.