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

Alkali soil Soil carbon Red soil
DOI: 10.1186/s13568-021-01211-x Publication Date: 2021-04-07T08:04:04Z
ABSTRACT
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.
SUPPLEMENTAL MATERIAL
Coming soon ....
REFERENCES (46)
CITATIONS (12)