西南紫色土坡耕地农作物-耕层质量适宜性的耦合度诊断

娄义宝,史东梅,金慧芳,蒋光毅,段腾,江娜

Coupling Degree Diagnosis on Suitability Evaluation of Cultivated-Layer Quality for Slope Farmland in Purple Hilly Region of South-Western China

LOU YiBao,SHI DongMei,JIN HuiFang,JIANG GuangYi,DUAN Teng,JIANG Na

表2 农作物-耕层耦合协调度评价指标体系及指标权重

Table 2 Evaluation index system and index weight of crop-till layer coupling coordination

目标层 Target layer 准则层 Criteria layer 指标层（xi）Indicator layer (xi) 综合权重Comprehensive weight 1级指标 Level 1 indicator 权重 Weights 2级指标 Level 2 indicator 权重 Weights 农作物-耕层耦合协调度 Crop-plough layer coupling coordination degree 农作物综合评价指数Crop comprehensive evaluation index（CCE） 产量特征 Yield properties 1 作物产量 Crop yield 1 1 耕层综合评价指数Topsoil comprehensive evaluation index（PCE） 物理特性 Physical properties 0.5 田面坡度 Slope 0.2970 0.1485 有效土层厚度 Effective thickness of soil layer 0.1634 0.0817 耕层厚度 Topsoil thickness 0.5396 0.2698 化学特性 Chemical properties 0.5 土壤有机质 Soil organic matter 0.3452 0.1726 阳离子交换量 Cation exchange capacity 0.0888 0.0444 土壤全氮 Soil total nitrogen 0.2441 0.1220 土壤有效磷 Soil effective phosphate 0.1551 0.0776 土壤速效钾 Soil available potassium 0.0691 0.0345 pH 0.0977 0.0498