Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2025, Vol. 41 ›› Issue (21): 96-106.doi: 10.11924/j.issn.1000-6850.casb2025-0546

• Academic Papers of the 27th Annual Meeting of the China Association for Science Technology • Previous Articles     Next Articles

Effects of Soil Conditioner on Fertility Restoration and Fruit Quality in Continuous Cropping Vineyards

ZHAO Kegang1(), CAI Miao1, MA Chang2,3, WANG Dong2, XIE Xiaomei4, WANG Xinya4   

  1. 1 Xi’an Agricultural Technology Extension Center, Xi’an 710000
    2 Key Laboratory of Agricultural and Rural Eco-Environment, Ministry of Agriculture and Rural Affairs/Institute of Agricultural Environment and Sustainable Development, Chinese Academy of Agricultural Sciences, Beijing 100081
    3 College of Resources and Environment, Shanxi Agricultural University, Jinzhong, Shanxi 030800
    4 College of Resources and Environment, Qingdao Agricultural University, Qingdao, Shandong 266109
  • Received:2025-06-30 Revised:2025-07-21 Online:2025-07-25 Published:2025-08-05

Abstract:

In order to address soil quality degradation and fruit quality decline in continuous cropping vineyards, this research investigated the effects of a soil conditioner (BGA), conventional fertilizer (NPK), and their reduced-rate combined application (H-BGA+NPK) on soil physicochemical properties, active organic carbon fractions, aggregate structure, and grape quality, while exploring the underlying mechanisms. Results showed that fertilization treatments exhibited significant temporal specificity in influencing soil parameters. During the fruit expansion stage, the H-BGA+NPK treatment synergistically enhanced soil organic matter (21.67% higher than NPK), total nitrogen (3.61% higher than NPK), and microbial biomass carbon (20.53% higher than NPK), optimizing early-stage nutrient supply through the combined effect of rapid nitrogen release from fertilizer and slow carbon input from the conditioner. In the maturity stage, sole BGA application promoted sustained mineralization of organic components, leading to substantial increases in soil organic matter (59.89% higher than NPK) and nitrate nitrogen (169.27% higher than NPK), significantly improving the soil carbon-nitrogen pool. Soil aggregate analysis revealed that H-BGA+NPK significantly promoted the formation of macro-aggregates (>0.25 mm), increasing their proportion by 45.90% compared to NPK, while sole NPK application increased the proportion of micro-aggregates (<0.053 mm), highlighting the structural optimization effect of conditioner-fertilizer combination. Regarding fruit quality, the H-BGA+NPK treatment achieved the highest soluble sugar content (12.46%), which was 5.68% and 1.71% higher than NPK and BGA alone, respectively, demonstrating optimal balance of the sugar-acid ratio. Sole BGA application significantly increased titratable acid (9.49% higher than NPK) and soluble solids (1.03%-4.08% higher than NPK), making it suitable for high-acid grape cultivation. Correlation analysis indicated that soluble sugar was negatively correlated with soil bulk density and dissolved organic carbon (P<0.05), while titratable acid showed strong negative correlations with soil pH, total nitrogen, and other nutrient indices (P<0.001), and positive correlations with bulk density and dissolved organic carbon (P<0.05), confirming that soil structure and carbon fractions are key regulators of fruit quality. This research confirms that precise integration of soil conditioner and fertilizer based on crop growth stages can balance short-term nutrient supply and long-term soil health, providing a theoretical and practical framework in sustainable high-yield and high-quality vineyard management.

Key words: continuous cropping vineyard, soil quality, fruit quality, soil conditioner, fertility restoration, active organic carbon components, aggregation composition