Straw mulching and nitrogen application altered ammonia oxidizers communities and improved soil quality in the alkaline purple soil of southwest China

• DOI: 10.1186/s13568-021-01211-x
• Publication Date: 2021-04-07T08:04:04Z
• Authors: Songhe Chen; Rencai Gao; Xiaoling Xiang; Hongkun Yang; Hongliang Ma; Ting Zheng; Yun Xiao; Xue Zhang; Han Li; Gaoqiong Fan; Yang Yu
• Keywords: Alkali soil; Soil carbon; Red soil

Abstract Microbe-mediated ammonia oxidation is a key process in soil nitrogen cycle. However, the effect of maize straw mulching on oxidizers alkaline purple remains largely unknown. A three-year positioning experiment was designed as follows: measures main-plot treatment and three kinds application sub-plot treatment. We found contents organic carbon (SOC), total (TN), available potassium (AK), (AN), phosphorus (AP), NH 4 + -N were increased after soil, so did amoA genes abundance ammonia-oxidizing archaeal (AOA) bacterial (AOB). Terminal restriction fragment length polymorphism (T-RFLP) analysis revealed that Thaumarchaeote (448-bp T-RF) dominated AOA communities, whereas Nitrosospira sp (111-bp AOB communities. The community compositions both altered by however, communities more responsive than to application. Further indicated SOC AP main factors affecting soil. present study reported strategies differently shape structure abundance, which should be considered when evaluating agricultural management regarding their sustainability quality.