成都地区耕地土壤熟化度评价方法初探

Preliminary Exploration on Evaluation Method of Soil Ripening Degree of Cultivated Land in Chengdu

为较准确地评价耕地土壤熟化度,利用特尔斐法确定各项评价因子及权重,通过测定7项相对比较容易掌握的指标,再运用综合评价法对耕地土壤熟化度进行评价,并用水稻土及旱地3种作物的产量分值与对应的土壤评价分值进行配对相关性分析与配对样本t检验显著性分析,以判定评价结果的可信度。结果表明,3种作物的产量分值与对应的土壤评价分值配对相关性达到显著水平,其配对样本t检验不显著,产量级别与土壤评价级别的平均差值均不超过0.1。该评价方法具有一定的可信度。

In order to evaluate soil ripening degree of cultivated land more accurately,the Delphi method was used to determine evaluation of factors and weight,by measming 7 indicators which relatively easy to grrasp and using the method of comprehensive evaluation to evaluate,and the paired correhtion anlysis and the paried samples t-test analysis was used to test the scores of yield of 3 crops and the scores of soil evaluation on rice soil and dryland,to detrmine the credibility of the evaluation results.The readts showed that the pairied correlation on the scores of yidd of 3 crops and the scores of soil evaluation was significant,and the paided samples t-test wasn＇ t dgnificant,the average diffemce bewteen the level of yield and the level of soilevahation on the same crop was no more than 0.1.The method of evaluation had a certain credibility.