吉林农业大学学报2024，Vol.46Issue(5)：886-894,9.DOI:10.13327/j.jjlau.2021.1185
耐盐碱类芽孢杆菌C1对苏打盐碱土团聚体的影响
Effects of Saline-alkali Tolerant Paenibacillus sp.C1 on Aggregates of Soda Saline-alkaline Soil
摘要
Abstract
High dispersion of soda saline-alkali soil aggregates is not conducive to the transforma-tion,activation and maintenance of organic matter and other nutrients,and seriously affects the growth of crops.In this paper,the improvement effect of a salt-tolerant Bacillus C1 on soda saline-alkaline soil was studied from the perspectives of soil aggregate composition,physical and chemical properties,and biological characteristics.The results showed that strain C1 acted on soda saline-alkaline soil alone,increasing the content of polysaccharides and available phosphorus in aggregates of different sizes,and lowering soil pH.However,the coexistence of strain C1 with rice straw,ammo-nium sulfate and calcium phosphate increased soil aggregates of>0.25 mm size by 4.13%;weight loss rates of aggregates of>0.25 mm and 0.25-0.053 mm sizes in water were reduced by 2.65%and 3.58%,indicating a significant increase in stability;Polysaccharide content of>0.25 mm,0.25-0.053 mm and<0.053 mm particle size aggregates increased by 35.86%,38.46%and 31.23%,re-spectively;Total organic carbon content increased by 35.69%,36.78%and 25.44%,respectively;Available phosphorus content increased by 36.44%,29.49%and 38.72%,respectively;Organic phosphorus content increased significantly by 44.97%,41.37%,and 39.26%;alkaline phosphatase activity increased significantly by 26.11%,22.59%and 25.71%,respectively,reaching significant levels;Ratio of water-soluble organic carbon to total organic carbon in soil aggregates of>0.25 mm and 0.25-0.053 mm sizes increased by 6.14%and 3.58%,respectively,reducing the content of ionic carbon.The above results show that the composite improvement of strain C1 with rice straw,ammo-nium sulfate and calcium phosphate has important application value for the improvement of soda saline-alkaline soil.关键词
类芽孢杆菌/苏打盐碱土/土壤团聚体/秸秆降解/胞外多糖/复合改良Key words
Paenibacillus sp./soda saline-alkali soil/soil aggregate/straw degradation/exopoly-saccharide/composite modification分类
农业科技引用本文复制引用
陈潼樾,李明堂,郎立娜,陈元晖,张春燕,吴迪..耐盐碱类芽孢杆菌C1对苏打盐碱土团聚体的影响[J].吉林农业大学学报,2024,46(5):886-894,9.基金项目
吉林省重点研发项目(20200403003SF),秸秆生物学与利用教育部重点实验室开放课题(klos2020-005) （20200403003SF）
