Stratification of soil organic C, N and C:N ratio as affected by conservation tillage in two maize fields of China
Agricultural practice ; Agropedology ; Carbon ; China ; Cultivated land ; Experimentation ; Maize ; Nitrogen ; North-Eastern China ; Soil properties
Agrología ; Carbono ; China ; Experimentación ; Maíz ; Nitrógeno ; Propiedades del suelo ; Práctica de cultivo ; Suelo cultivado
The work was conducted at 2 field experimental sites in the northeast of China. Soils were Cambisols and continuously cultivated with maize for 12 years (Jianping site, temperate semi-arid climate) and 5 years (Changtu site, temperate sub-humid
Agricultural practice ; Agropedology ; China ; Cultivated land ; Experiment plot ; Maize ; Micro-organism ; Mulching ; North-Eastern China ; Seasonal variability ; Soil properties ; Soil temperature
Agrología ; China ; Maíz ; Microorganismo ; Parcela experimental ; Propiedades del suelo ; Práctica de cultivo ; Suelo cultivado ; Temperatura del suelo ; Variabilidad estacional
Seasonal variability of microbial biomass carbon (MBC) and basal respiration (BR) in surface soil was compared between conventional straw removal (SR) and straw coverage (SC) in a maize field experiment, Northeast China. The straw coverage treatment
significantly increased microbial energy, carbon and nutrient sources (soil C and N contents) and improved soil physical environment (moisture and porosity), and thus stimulated MBC and BR across the growth season of maize, as compared to the straw removal