[Objective] To find out the distribution of cultivated land fertility in Mouding County,and scientifically classify the soil grade of cultivated land.[Methods] Taking the national cultivatedland type area and the level of cultivated land fertility classification as the reference standard,according to the analysis results of soil samples collected by Mouding County soil test,combined with the soil fertility classification factors,the limiting factors method and comprehensive induction were used to analyze and evaluate the factors of cultivated land fertility.[Result] Cultivated land of 25 526.24 hm2 in Mouding County was divided into 1-6 grades:first level 2 588.73 hm2,second level 4 776.75 hm2,third level 5 734.88 hm2,fourth level 4 744.05 hm2,fifth level 4 140.55 hm2,sixth level 3 541.28 hm2.[Conclusion] The characteristics and characters of cultivated land were discussed,and relevant peotective measures were put forward.%[目的]摸清牟定县耕地地力分布情况,科学划分耕地土壤等级.[方法]以《全国耕地类型区、耕地地力等级划分》为参照标准,根据牟定县测土配方施肥土样采集化验分析结果,结合土壤地力划分因素,采用限制因素法和综合归纳法,对耕地地力因素进行系统分析和评比.[结果]将牟定县25 526.24 hm2耕地分为1～6个等级,其中:一级地2 588.73 hm2,二级地4 776.75 hm2,三级地5 734.88 hm2,四级地4 744.05 hrn2,五级地4 140.55 hm2,六级地3 541.28 hm2.[结论]对各类耕地等级特征、性状进行论述,并提出相关保护利用措施.
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