Because of variability of natural and economic characteristics in different areas , current evaluation on cultivated land fertility adopts different evaluation index systems , these lead to incompatibility of evaluation results and discommodity for utilization , management and protection of cultivated land .

由于不同区域间自然和社会经济因素的巨大差异，目前耕地地力评价工作中，不同地区往往采用不同的评价指标体系，使评价结果难有可比性，给耕地的利用管理和保护工作带来不便。