土壤2025，Vol.57Issue(2)：308-317,10.DOI:10.13758/j.cnki.tr.2025.02.008
基于天然腐殖质材料土壤改良的设施姜地青枯病防治研究
Study on Prevention and Control of Ginger Bacterial Wilt in Facility Cropping Through Soil Improvement with Natural Humic Materials
摘要
Abstract
This study conducted field experiments to investigate the impacts of natural humic materials on soil physicochemical properties of continuously cropped ginger,bacterial community composition,and the disease index of ginger bacterial wilt.Three treatments were set up:no application of organic materials(CK),natural humic materials(MT),and organic fertilizer(OF).The results showed that MT significantly altered soil physical structure,compared to CK,the bulk density decreased from 1.35 g/cm3 to 1.16 g/cm3,decreased by 14.1%.Simultaneously,the content of large aggregates(>2 mm)significantly increased by 56.8%,while the content of aggregates(0.25-2 mm)increased by 59.6%.Regarding the expansion of nutrient storage capacity,both MT and OF significantly increased soil organic matter,enhancing nutrient availability.Additionally,MT significantly increased soil pH,and it also increased ginger yield by 155%compared to CK.Disease index had a negative correlation with soil nutrients and water-stable aggregates of 2-0.25 mm.Compared to CK,MT significantly improved the α and β diversity of soil bacterial communities.The changes in bacterial communities were primarily driven by total nitrogen and the content of water-stable aggregates of 0.25-0.053 mm.Furthermore,the bacterial co-occurrence network revealed that natural humus materials could promote the interactions among soil bacteria,enhancing the module diversity and reinforcing the stability of bacterial networks.Interestingly,disease index was mainly directly related to Peribacillus_31373,Gaiella and AG11 bacteria,and natural humus materials inhibited the incidence of bacterial wilt mainly by affecting the bacteria of Peribacillus_31373,Gaiella and AG11.In conclusion,applying natural humus materials could effectively improve soil physical structure and increase soil nutrient reservoir of ginger facility,increase ginger yield,and significantly alleviate the incidence of bacterial wilt mainly by affecting soil nutrient index,water-stable aggregates of 2-0.25 mm and the abundance of important soil bacteria.关键词
土壤有机质/水稳性团聚体/青枯病/设施蔬菜/天然腐殖质材料Key words
Soil organic matter/Water-stable aggregates/Bacterial wilt/Facility vegetables/Natural humic materials分类
农业科技引用本文复制引用
朱良辉,张丛志,潘慧,王红叶,张佳宝..基于天然腐殖质材料土壤改良的设施姜地青枯病防治研究[J].土壤,2025,57(2):308-317,10.基金项目
安徽省重点研发计划项目(2023n06020056)、中国科学院战略性先导科技专项(XDA0440000)和国家重点研发计划项目(2022YFD1500903,2022YFD1500502)资助. （2023n06020056）
