Wang Peng, Wen Ming-Xia, Jin Long-Fei, Liu Feng, Lu Qi, Cao Min-Gao, Huang Bei, Wu Shao-Hui
Citrus Research Institute of Zhejiang Province, Taizhou 318026, Zhejiang, China.
College of Horticulture and Gardening, Yangtze University, Jingzhou 434022, Hubei, China.
Ying Yong Sheng Tai Xue Bao. 2023 Oct;34(10):2805-2812. doi: 10.13287/j.1001-9332.202310.012.
To understand the effects of different fertilizer applications on soil quality and arbuscular mycorrhizal colonization, we examined the changes in soil physical and chemical properties, mycorrhizal colonization and propagules, and their relationships in citrus under inorganic fertilization (IF), organic fertilization (OF), combined organic and inorganic fertilization (CF), and no fertilization (CK) treatments. Results showed that all fertilization treatments improved the content of rhizospheric soil organic carbon (SOC), nutrient contents, and electrical conductivity (EC). Both CF and OF significantly increased soil pH, soil aggregate stability, activities of urease, catalase, and sucrase, and the colonization and reproduction of arbuscular mycorrhizae fungi (AMF) in citrus rhizosphere. However, IF treatment significantly decreased soil pH and the colonization and reproduction of AMF in citrus rhizosphere. The number of mycorrhizal colonization and propagation was positively correlated with soil aggregate stability, SOC content, total nitrogen content, total phosphorus content, urease activity, and soil pH. Combined with the principal component analysis, we concluded that application of inorganic fertilizer alone could cause soil acidification and inhibit AMF colonization in citrus orchards. In contrast, organic fertilizer combined with inorganic fertilizer in citrus could improve the soil quality and AMF colonization.
为了解不同施肥方式对土壤质量和丛枝菌根定殖的影响，我们研究了在无机肥（IF）、有机肥（OF）、有机无机肥配施（CF）和不施肥（CK）处理下柑橘土壤理化性质、菌根定殖和繁殖体的变化及其相互关系。结果表明，所有施肥处理均提高了根际土壤有机碳（SOC）含量、养分含量和电导率（EC）。CF和OF均显著提高了土壤pH值、土壤团聚体稳定性、脲酶、过氧化氢酶和蔗糖酶活性，以及柑橘根际丛枝菌根真菌（AMF）的定殖和繁殖。然而，IF处理显著降低了土壤pH值以及柑橘根际AMF的定殖和繁殖。菌根定殖和繁殖数量与土壤团聚体稳定性、SOC含量、全氮含量、全磷含量、脲酶活性和土壤pH值呈正相关。结合主成分分析，我们得出结论，单施无机肥会导致柑橘果园土壤酸化并抑制AMF定殖。相比之下，柑橘有机无机肥配施可改善土壤质量和AMF定殖。
