西北林学院学报2025，Vol.40Issue(4)：76-84,9.DOI:10.3969/j.issn.1001-7461.2025.04.09
长期不同施肥模式对陕南核桃园土壤理化性质及经济效益的影响
Effects of Long-term Fertilization Modes on Soil Physicochemical Properties and Economic Benefits of Walnut Orchards in Southern Shaanxi
摘要
Abstract
To solve the problems of single fertilization,only chemical fertilizer application,and soil compac-tion 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),chemi-cal 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 over-all 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 fer-tilizers and bio-organic fertilizers has significant effects on improving walnut yield and soil physicochemical properties.关键词
核桃园/长期施肥/土壤理化性质/经济效益Key words
walnut orchard/long-term fertilization/soil physical and chemical properties/economic benefits分类
农业科技引用本文复制引用
刘蓓青,巴婷婷,张建国,翟梅枝,彭少兵..长期不同施肥模式对陕南核桃园土壤理化性质及经济效益的影响[J].西北林学院学报,2025,40(4):76-84,9.基金项目
国家自然科学基金项目(41877541) （41877541）
陕西省重点研发计划项目(2022ZDLNY02-03). （2022ZDLNY02-03）
