关键词: 攀枝花, 植烟土壤, 养分

Abstract: [Objective] The aim of the study was to assess the main nutrient of tobacco-planting soil at Renhe district in Panzhihua of Sichuan province, which can provide scientific basis for effective fertilization. [Method] Principal component analysis and fuzzy mathematics were used to assess the soil nutrient. [Results] Results showed that the pH was on the high side(7.49) in the newly cultivated soil, whereas lower in the mellow soil(5.25). Relative low content of organic matter was found in the newly cultivated soil(12.60 g/kg) when compared with it in the mellow soil(54.48 g/kg). In addition, the means of P in both types of soil was lower(0.52 g/kg). The means of total K was observed moderate content(19.62 g/kg) and the means of available K was relative lower(102.07 mg/kg) in the newly cultivated soil. While in the mellow soil, the means of total K was low(12.38 g/kg), but the means of available K was moderate content(264.67 mg/kg). The nutrient index of the newly cultivated soil and mellow soil were 0.45 and 0.48, respectively. The two types of soil nutrient status keep in a low level. [Conclusion] Some of the region of soil nutrients content were excessive or insufficient, which caused the imbalance nutrients of soil nutrients supply and the entire soil nutrient were below the middle level.

Key words: Panzhihua, flue-cured tobacco soil, soil nutrient