Zhang Yi-Jie, Xu Jie, Lu Ren-Chuang, Ye Chen, Huang Hui-Chuan, Yang Min, He Xia-Hong, Zhu Shu-Sheng
Key Laboratory for Agrobiodiversity and Pest Management of Ministry of Education, Yunnan Agricultural University, Kunming 650201, China.
Key Laboratory for Agrobiodiversity and Pest Management of Ministry of Education, Yunnan Agricultural University, Kunming 650201, China; Southwest Forestry University, Kunming 650224, China.
Ying Yong Sheng Tai Xue Bao. 2022 Apr;33(4):972-980. doi: 10.13287/j.1001-9332.202204.018.
Soil acidification is an important factor leading to poor growth and root rot disease of in the understorey of forests. In this study, different amounts of quicklime (0, 500, 1000, 1500 and 2000 kg·hm) were amended into acid soil under forest. We evaluated the effect of quikelime addition on soil chemical properties, phenols, rhizosphere microorganisms and growth of . The results showed that an appro-priate amount of quicklime addition (500-1000 kg·hm) could significantly increase soil pH, decrease the content of phenols (-hydroxybenzoic acid, vanillin, syringic acid, ferulic acid and vanillic acid), promote growth, and reduce the incidence of root rot disease. An appropriate amount of quicklime (500-1000 kg·hm) could significantly reduce the fungi:bacteria ratio, increase bacteria diversity, and increase the relative abundance of Ascomycota and Proteobacteria as well as and . However, excessive quicklime addition (1500-2000 kg·hm) could reduce the content of available nitrogen and organic matter, and inhibit growth. Therefore, 500-1000 kg·hm of quicklime amendment could improve the chemical properties and microbial community of acid soil under forest, thereby promoting growth, and reducing the incidence of root rot disease.
土壤酸化是导致森林林下植物生长不良和根腐病的一个重要因素。在本研究中，向森林下的酸性土壤中添加了不同量的生石灰（0、500、1000、1500和2000 kg·hm）。我们评估了添加生石灰对土壤化学性质、酚类物质、根际微生物以及林下植物生长的影响。结果表明，适量添加生石灰（500 - 1000 kg·hm）可显著提高土壤pH值，降低酚类物质（对羟基苯甲酸、香草醛、丁香酸、阿魏酸和香草酸）含量，促进林下植物生长，并降低根腐病发病率。适量的生石灰（500 - 1000 kg·hm）可显著降低真菌与细菌的比例，增加细菌多样性，并增加子囊菌门和变形菌门以及[此处原文缺失两个具体微生物名称]的相对丰度。然而，过量添加生石灰（1500 - 2000 kg·hm）会降低有效氮和有机质含量，并抑制林下植物生长。因此，添加500 - 1000 kg·hm的生石灰可改善森林下酸性土壤的化学性质和微生物群落，从而促进林下植物生长，并降低根腐病发病率。
