Mar 22, 2016

Effect of long-term fertilization on microbial community functional diversity in black soil

Ying yong sheng tai xue bao = The journal of applied ecology
Jing-xin LiuBao-ku Zhou

Abstract

In order to study the effects of long-term different fertilization on microbial community functional diversity in arable black. soil, we examined microbial metabolic activities in two soil la- yers (0-20 cm, 20-40 cm) under four treatments (CK, NPK, M, MNPK) from a 35-year continuous fertilization field at the Ministry of Agriculture Key Field Observation Station of Harbin Black Soil Ecology Environment using Biolog-ECO method. The results showed that: in the 0-20 cm soil layer, combined application of organic and inorganic fertilizer(MNPK) increased the rate of soil microbial carbon source utilization and community metabolism richness, diversity and dominance; In the 20-40 cm layer, these indices of the MNPK treatment was lower than that of the NPK treat- ment; while NPK treatment decreased soil microbial community metabolism evenness in both layers. Six groups of carbon sources used by soil microbes of all the treatments were different between the two soil layers, and the difference was significant among all treatments in each soil layer (P < 0.05) , while the variations among treatments were different in the two soil layers. Canonical correspondence analysis (CCA) showed that soil microbial community metabolic function of al...Continue Reading

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Mentioned in this Paper

Fertility
Metabolic Process, Cellular
Fertilizers
Vitreous Carbon
NPK 1886
Nutrients
Down Syndrome
Carbon
TRNA 3'-terminal CCA Addition
African American

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