Plant, Soil and Environment | |
CO2 efflux and microbial activities in undisturbed soil columns in different nitrogen management | |
G. Heltai1  T. Szili-Kovács1  I. Villányi1  K. Kristóf1  M. Knáb1  Á. Bálint1  E. Molnár1  | |
关键词: farmyard manure; root respiration; soil carbon budget; soil respiration; soil temperature; | |
DOI : 10.17221/216/2016-PSE | |
学科分类:农业科学(综合) | |
来源: Czech Academy of Agricultural Sciences | |
【 摘 要 】
The surface carbon dioxide (CO2) fluxes together with the soil microbial biomass and activity in undisturbed soil columns were studied in three growing seasons. Soil columns had six treatments: (1) control without plants; (2) mineral fertilized without plants; (3) no fertilizer and maize plants; (4) mineral fertilized and maize plants; (5) manure and maize plants; (6) mineral fertilized plus manure and maize plants. Soil microbial biomass was measured by substrate-induced respiration (SIR) and microbial activity as fluorescein-diacetate hydrolysing activity (FDA). Treatments had a significant effect (P < 0.001) on CO2 fluxes, SIR and FDA. The presence of maize increased CO2 efflux, SIR and FDA compared to unplanted column. Fertilizer + manure treatment resulted in the greatest plant biomass and the greatest CO2 efflux. Significant correlation (r = 0.680; r = 0.586 in two consecutive years) between SIR and FDA was found.
【 授权许可】
Unknown
【 预 览 】
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RO201912010233651ZK.pdf | 1030KB | download |