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26 年长期施肥对土壤微生物量碳、氮及土壤呼吸的影响
臧逸飞1; 郝明德1,2; 张丽琼1,3; 张昊青1
Source Publication生态学报

提取法、碱液吸收法和化学分析法分析了长达26a 不同施肥处理农田土壤微生物量碳、微生物

Other Abstract

Soil microbial properties play important roles in soil quality changes and nutrition cycling. The relationship
between soil microbial properties and soil quality changes as a result of climate conditions,soil types,tillage and fertilizer.
Lots of studies had been done; however,there are not too many reports on loessial soil. Loessial soil is one of the main types
of soil on loess plateau. The study about loessial soil plays an important role in getting better soil environment and increasing
productivity of dryland on loess plateau. In this paper,the relationship between soil quality and soil microbial properties
such as soil microbial biomass carbon,soil microbial biomass nitrogen and soil basal respiration was studied in order to
illustrate the function of soil microbial properties as bio-indicators of soil health. The long-term experiment was set up in
1984 in Changwu county,Shaanxi province,China. We collected samples from the 0—20 cm soil zone of the long-term
wheat cultivation and fertilization system. Nine treatments were carried out in this study: 1) fallow ( F) ; 2) no fertilization
as control ( CK) ; 3) nitrogen ( N) ; 4) phosphorus ( P ) ; 5) manure ( M) ; 6) nitrogen + phosphorus ( NP ) ; 7)phosphorus + manure ( PM) ; 8) nitrogen + manure ( NM) ; 9) nitrogen + phosphorus + manure ( NPM) . The chemical
properties such as pH,organic matter,total nitrogen,and total phosphorus content were analyzed in order to determine to
the effects of long-term wheat cultivation and fertilization on soil nutrients. The soil microbial biomass carbon,soil microbial
biomass nitrogen,basal respiration and the derivative indices of the arable soil in different long-term fertilization systems
were also analyzed. The results showed that different fertilization on loessial soil in 26 years significantly affected soil
chemical and microbial properties. Long-time combined application of organic and mineral fertilizers had more effect on soil
organic matter,total nitrogen and total phosphorus content than mineral fertilizers alone. All these properties in treatment
with fertilizers input NPM were the highest. In different fertilization treatments,the contents of soil microbial biomass carbon
changed between 254.65 mg /kg and 745.26 mg /kg,and the contents of soil microbial biomass nitrogen changed from 31.70
mg / kg to 120.54 mg /kg. Long-term fertilization and planting increased the content of soil microbial biomass carbon and soil
microbial biomass nitrogen. Especially, organic fertilizers can significantly enhance soil microbial biomass content.
Compared with CK,the treatments with organic fertilizers input increased soil microbial biomass carbon,soil microbial
biomass nitrogen and soil basal respiration. The soil basal respiration of treatments with organic fertilizer was increased by
15.91% to 75.73%. In the meantime chemical fertilizer had no promotion on the soil basal respiration,and decreased the
metabolic quotient. Some of soil microbial properties ( Soil microbial biomass carbon,Soil microbial biomass nitrogen,Soil
basal respiration) were significantly correlated with soil organic matter and soil total nitrogen contents. Soil basal respiration
was also significantly correlated with soil total phosphorus content. The correlations between microbial quotient and soil
nutrients,metabolic quotient and soil nutrients were not obvious. These results indicate that soil microbial properties reflect
the changes of soil quality and thus can be used as biological indices in the evaluation of soil fertility.

Keyword长期连作施肥 土壤微生物量碳 土壤微生物量氮 土壤呼吸
Indexed By中文核心期刊要目总览
Document Type期刊论文
Recommended Citation
GB/T 7714
臧逸飞,郝明德,张丽琼,等. 26 年长期施肥对土壤微生物量碳、氮及土壤呼吸的影响[J]. 生态学报,2015,35(5):1445-1451.
APA 臧逸飞,郝明德,张丽琼,&张昊青.(2015).26 年长期施肥对土壤微生物量碳、氮及土壤呼吸的影响.生态学报,35(5),1445-1451.
MLA 臧逸飞,et al."26 年长期施肥对土壤微生物量碳、氮及土壤呼吸的影响".生态学报 35.5(2015):1445-1451.
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