Abstract
ABSTRACT Soil microbial biomass plays a significant role in soils, and it is often used as an early indicator of change in soil quality. Soil microbial biomass is affected by different fertilization management practices. Therefore, the impact of different long-term fertilization management practices on the soil organic carbon (SOC) content, soil microbial biomass carbon (SMBC), and soil microbial biomass nitrogen (SMBN), as well as the soil microbial quotient (SMQ) in the tilled layer (0.00-0.20 m) were studied in the present [...]
Highlights
Soil organic matter (SOM) is an important soil component that affects soil biological and soil physicochemical properties (Bhardwaj et al, 2011)
The results showed that there is no significant difference in effect on soil organic carbon (SOC), soil microbial biomass carbon (SMBC), and soil microbial biomass nitrogen (SMBN) contents and on the soil microbial quotient (SMQ) in the paddy field with mineral fertilizer alone (MF) treatment compared with the CK treatment at the main growth stages of early and late rice
Some studies have shown that mineral fertilizers increase soil microbial biomass carbon (SMBC) and soil microbial biomass nitrogen (SMBN) contents (Goyal et al, 1992; Li et al, 2008), but other studies have indicated that soil microbial biomass is not significantly affected by application of inorganic fertilizers and even that soil microbial populations and diversity were reduced by application of N fertilizer (Sarathchandra et al, 2001)
Summary
Soil organic matter (SOM) is an important soil component that affects soil biological and soil physicochemical properties (Bhardwaj et al, 2011). Soil organic matter content is influenced by some agricultural measures, including soil tillage, cropping systems, and the fertilizer regime (Paustian et al, 1997; Rodríguez-Murillo, 2001; Bhardwaj et al, 2011). Information regarding the effects of different long-term fertilizer regimes on soil microbial biomass should be obtained through further studies. Some studies have reported that the soil microbial community was affected by application of inorganic fertilizers and organic matter in different crop rotation systems (Zhen et al, 2014; Luo et al, 2015)
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