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为进一步了解重庆酉阳主要烟区植烟土壤养分真实情况,测定了7个乡镇103份植烟土壤样品的8项土壤理化性指标,运用统计学描述各指标的养分状况,并用模糊数学隶属函数模型进行了适宜性综合评价。结果表明:主要植烟地区土壤的PH呈酸性,有机质含量丰富,全磷和速效磷含量适宜。全氮和碱解氮基本处于中等偏上水平,全钾和速效钾含量较低,且分布不均。酉阳部分植烟土壤适宜指数处于中下水平,土壤养分状况较差,仅土壤适宜指数SFI<0.7的占了样本比例的64.74%。不同的植烟区的土壤,土壤类型差别较大。
In order to further understand the real situation of tobacco soil nutrients in the main tobacco growing areas of Youyang in Chongqing, eight soil physical and chemical indexes of 103 soil-planted tobacco samples from 7 townships were measured. The nutrient status of each index was described by statistics. The fuzzy membership functions The model has carried on the comprehensive evaluation of suitability. The results showed that the pH value of soils in main tobacco-growing areas was acidic, rich in organic matter and suitable for total phosphorus and available phosphorus. Total nitrogen and basic nitrogen were basically in the upper level, total potassium and available potassium content is low, and uneven distribution. The appropriate index of planting tobacco in Youyang was at the middle and lower levels, and the soil nutrient status was poor. Only SFI <0.7 was 64.74% of the sample. Different tobacco planting areas of soil, soil types vary greatly.