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采集分析了谯城区1134个植烟土样的p H值、有机质、碱解氮、速效钾和速效磷的含量,利用模糊数学和主成分分析方法对其肥力进行了定量评价,旨在通过简便科学的评价,快速摸清烟区土壤肥力现状,指导精准施肥。研究结果表明:(1)研究区土壤p H较高,有机质偏低,大部分土壤碱解氮、速效钾、速效磷适中;(2)肥力较低区、中等肥力区和较高肥力区分别占耕地总面积的5.65%、89.93%和4.42%;(3)土壤肥力在南北方向上呈现低-高-低的趋势,东西方向上呈现出高-低-高趋势;(4)现主要植烟乡镇中,从土壤适宜性方面来看,西南部和中部相对优于西北部,西北烟区应该设法提高速效钾含量。
The p H value, organic matter, alkaline hydrolysis nitrogen, available potassium and available phosphorus in 1134 tobacco-planting soil samples in Tancheng District were collected and analyzed. The fertility was quantitatively evaluated by fuzzy mathematics and principal component analysis. Scientific evaluation, quickly find out the status quo of tobacco soil fertility, and guide the precise fertilization. The results showed that: (1) The soil had higher p H and lower organic matter in the study area, and most of the soil available nitrogen, available potassium and available phosphorus was moderate; (2) The areas with lower fertility, medium fertility and higher fertility were Accounting for 5.65%, 89.93% and 4.42% of the total arable land. (3) Soil fertility showed a trend of low-high-low in the north and south and high-low-high in the east-west direction. (4) Smoke towns, from the perspective of soil suitability, the southwest and central relative is better than the northwest, northwest tobacco area should try to improve the available potassium.