Soil nutrient characteristics and comprehensive fertility evaluation of coffee orchards in Baoshan City, Yunnan Province

doi:10.14088/j.cnki.issn0439-8114.2026.06.009

Abstract

Abstract: To provide scientific guidance for precise soil nutrient management and coffee quality improvement in coffee orchards of Baoshan City, Yunnan Province, the soil nutrient contents in local coffee orchards were systematically evaluated by the comprehensive soil fertility index method. Soil samples were collected from five typical coffee planting areas in Baoshan City, and soil indicators including pH, organic matter, total nitrogen, total phosphorus, total potassium, manganese, zinc and copper contents were determined. The comprehensive index of soil fertility was calculated by the membership function model to comprehensively assess the soil nutrient characteristics and fertility of coffee orchards in Baoshan City. The results showed that the soil of coffee orchards in Baoshan City was generally acidic, with pH of 4.30-7.02 and an average value of 5.47. The contents of soil organic matter, total nitrogen, total phosphorus, total potassium, manganese, zinc and copper were 26.50-61.80 g/kg, 0.63-2.51 g/kg, 0.19-1.96 g/kg, 21.80-41.90 g/kg, 241.00-2 550.00 mg/kg, 33.70-200.00 mg/kg and 8.94-57.20 mg/kg, with average values of 40.59 g/kg, 1.18 g/kg, 0.68 g/kg, 28.52 g/kg, 882.31 mg/kg, 87.58 mg/kg and 29.61 mg/kg, respectively. The average contents of all indicators met the suitable levels for coffee growth. The comprehensive index of soil fertility of coffee orchards in Baoshan City was 0.21-0.67, with an average of 0.44. According to the comprehensive evaluation criteria of soil fertility, the soil fertility was classified as Grade Ⅲ, belonging to the medium level on the whole. It was recommended to reasonably increase the application rates of nitrogen and phosphorus fertilizers on the basis of increasing organic fertilizer input. Meanwhile, the input of trace elements such as manganese, zinc and copper in soil should be appropriately controlled. The above measures could effectively maintain high yield and high-quality production of coffee in Baoshan City, and support the quality improvement, efficiency enhancement and green sustainable development of the local coffee industry.

Key words: coffee orchard, soil nutrient, soil fertility, Baoshan City,Yunnan Province

CLC Number:

LYU Yu, XIANG Yun-gang, WANG Wei, HOU Ming-xing, ZI Chun-guang, HUANG Qian-rui. Soil nutrient characteristics and comprehensive fertility evaluation of coffee orchards in Baoshan City, Yunnan Province[J]. HUBEI AGRICULTURAL SCIENCES, 2026, 65(6): 52-58.

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