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对巫山县海拔高800~1 100、1 101~1 300和1 301~1 700 m的植烟土壤肥力特征进行了研究。结果表明:土样p H值范围为4.67~7.97,从低到高3个海拔梯度的土壤p H平均值分别为6.34、6.65、6.57,海拔高度对p H值平均值影响较小;土壤碱解氮、速效磷和速效钾含量分别为59.11~238.66、3.35~51.09和12.72~391.84 mg/kg,土壤有机质含量为8.44~38.93 g/kg,中低海拔地区随着海拔高度的增加,有机质含量平均值增加;高海拔地区有机质含量变化较小;土壤中氯离子含量在5.66~19.81 mg/kg,海拔高度对土壤氯离子含量的影响较小。
The characteristics of tobacco soil fertility at 800 ~ 1 100, 1 101 ~ 1 300 and 1 301 ~ 1 700 m elevation in Wushan County were studied. The results showed that soil p H value ranged from 4.67 to 7.97. The average values of soil p H from three altitudes to three altitudes were 6.34, 6.65 and 6.57, respectively, while the altitude had little effect on the average p H value. The contents of available nitrogen, available phosphorus and available potassium were 59.11 ~ 238.66, 3.35 ~ 51.09 and 12.72 ~ 391.84 mg / kg, respectively. The content of organic matter in soil was 8.44 ~ 38.93 g / kg. With the increase of altitude, the content of organic matter The average value increased; the content of organic matter in high altitude changed little; the content of chloride in soil was 5.66 ~ 19.81 mg / kg, and the influence of altitude on the content of chloride ion was little.