Journal of Northwest Forestry University, Volume. 40, Issue 4, 76(2025)

Effects of Long-term Fertilization Modes on Soil Physicochemical Properties and Economic Benefits of Walnut Orchards in Southern Shaanxi

LIU Beiqing1, BA Tingting1, ZHANG Jianguo1,2、*, ZHAI Meizhi2,3, and PENG Shaobing2,3
Author Affiliations
  • 1College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, Shaanxi, China
  • 2Walnut Engineering Technology Research Center of Shaanxi, Yangling 712100, Shaanxi, China
  • 3College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi, China
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    To solve the problems of single fertilization only chemical fertilizer application and soil compaction in walnut orchards in southern Shaanxi five treatments were set up including no fertilization CK single chemical fertilizer application T1 chemical fertilizer combined with organic fertilizer T2 chemical fertilizer combined with bio-organic fertilizer T3 chemical fertilizer combined with organic fertilizer and bio-organic fertilizer T4 Long term targeted fertilization experiments were conducted to study the effects of different fertilization modes on soil mechanical composition bulk density aggregates saturated hydraulic conductivity organic matter yield and economic benefits The results showed that 1 In the 0-80 cm soil layer the silt content range of T4 treatment was 81 42%-85 83% with an average value of 82 95% which was significantly improved compared to other fertilization treatments The T4 treatment showed the smallest bulk density in the 0-80 cm soil layer range which was an average decrease of 5 37% compared to the CK treatment The soil organic matter content of T4 treatment was the highest with an increase of 26 32% 43 28% 57 00% and 104 95% compared to CK treatment in the 0-20 cm 20-40 cm 40-60 cm and 60-80 cm soil layers respectively T4 treatment transformed soil aggregates from 0 053-0 25 mm to larger aggregates>0 25 mm The saturated hydraulic conductivity of T4 treatment was the highest in the 0-20 cm and 40-60 cm soil layers second only to T3 treatment in the 20-40 cm and 60-80 cm soil layers and there was no significant difference compared to T3 treatment 2 The walnut yield of T4 treatment was the highest among all treatments with 2 11 times 2 14 times 2 01 times and 7 45 times higher than that of CK in 2015 2017 2019 and 2021 respectively The fertilizer input and total input of T3 treatment were the highest but the yield income and net income of T4 treatment were the highest The net income under T4 treatment was 17 98 times higher than that of CK treatment The overall score of soil quality and economic benefits of T4 treatment was higher than that of other treatments Therefore under the conditions of this experiment the combination of chemical fertilizers with organic fertilizers and bio-organic fertilizers has significant effects on improving walnut yield and soil physicochemical properties

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    LIU Beiqing, BA Tingting, ZHANG Jianguo, ZHAI Meizhi, PENG Shaobing. Effects of Long-term Fertilization Modes on Soil Physicochemical Properties and Economic Benefits of Walnut Orchards in Southern Shaanxi[J]. Journal of Northwest Forestry University, 2025, 40(4): 76

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    Paper Information

    Received: Jun. 19, 2024

    Accepted: Sep. 12, 2025

    Published Online: Sep. 12, 2025

    The Author Email: ZHANG Jianguo (zhangjianguo21@nwafu.edu.cn)

    DOI:10.3969/j.issn.1001-7461.2025.04.09

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