|Table of Contents|

Effects of combined application of microbial agents and fertilizers on soil nutrients and microbial characteristics in reclaimed soil(PDF)

Chinese Journal of Applied & Environmental Biology[ISSN:1006-687X/CN:51-1482/Q]

Issue:
2016 06
Page:
1156-1160
Research Field:
Articles
Publishing date:

Info

Title:
Effects of combined application of microbial agents and fertilizers on soil nutrients and microbial characteristics in reclaimed soil
Author(s):
LI Li LI Tingliang MENG Huisheng XIE Yinghe & HONG Jianping**
College of Resources and Environment, Shanxi Agricultural University, Taigu 030801, China
Keywords:
microbial agents reclaimed soil soil nutrients soil microbial characteristicssoil enzyme activity
CLC:
S144 : S158.3
PACS:
DOI:
10.3724/SP.J.1145.2016.06006
DocumentCode:

Abstract:
The aim of this research was to provide a scientific basis of reclaimed soil biological fertility and rapid maturation. The pot experiment used completely randomized design to investigate the effects of microbial agents (MA) combined with organic fertilizer (OF) and inorganic fertilizer (IF) in equal nutrient supply conditions on the soil nutrients and microbial characteristics of reclamation soil. The results showed that the combination of microbial agents and fertilizers could significantly increase the soil nutrient contents. The treatment of MA+OF recorded the highest contents of soil organic matter and total nitrogen as 42.60 % and 36.43% higher than those in control; the MA+IF treatment obtained the highest contents of soil total phosphorus, available nitrogen and phosphorus as 24.40%, 210% and 460%, respectively higher than those in control. Application of microbial agents and fertilizers could significantly increase the number and biomass of soil microorganisms (P < 0.05). The maximum number of bacteria and microorganisms were found in the treatment of MA+OF+IF, while the highest microbial biomass carbon and nitrogen were obtained in the treatment of MA+OF. Compared with no-microbial agents application, microbial agents application increased the number of bacteria by 35.73%-53.69%, microbial biomass carbon by 15.30%-28.33%, and microbial biomass nitrogen by 12.55%-23.23%. Combined application of microbial agents and fertilizers could significantly enhance soil enzyme activities. Compared with CK, treatment of MA+OF+IF increased the soil catalase, urease, phosphatase and invertase activity by 20.66%, 40.91%, 77.04% and 77.06%, respectively. Correlation analysis showed a close relationship between soil nutrient and microbial characteristics, which could be used to evaluate the soil fertility status. Principal component analysis further showed that quality of reclaimed soil in different treatments in an order of MA+OF+IF > MA+OF > OF+IF > MA+IF > OF > IF > CK. In conclusion, application of organic and inorganic fertilizer combined with biological agents is conductive to soil fertility and microbial characteristics and therefore beneficial to the micro-ecological environment in reclaimed soil.

References

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Last Update: 2016-12-30