|Table of Contents|

Effect on soil microbes of the rhizospheric soil acidity of tea tree continuous cropping*(PDF)

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

Issue:
2016 03
Page:
480-485
Research Field:
Articles
Publishing date:

Info

Title:
Effect on soil microbes of the rhizospheric soil acidity of tea tree continuous cropping*
Author(s):
WANG Haibin12** YE Jianghua2 CHEN Xiaoting1 JIA Xiaoli3 & KONG Xianghai1
1College of Life Sciences, Longyan University, Longyan 364012, China 2Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, Fujian Agriculture and Forestry University, Fuzhou 350002, China 3College of Ecology and Resources Engineering, Wuyi University, Wuyishan 354300, China
Keywords:
tea tree continuous planting rhizospheric soil pH value soil microbe
CLC:
S571.106 : S154.3
PACS:
DOI:
10.3724/SP.J.1145.2015.09019
DocumentCode:

Abstract:
To explore effect of soil acidification on the microbial biomass and the flora at the root of tea tree, the rhizospheric soils of Huangjingui with different ages were used as materials, and effects of rhizospheric pH value on the microbial biomass, the number of microbe and microbial populations were analyzed. Meanwhile, the sensitivity of soil microbe response to acidification was got. The results showed that the microbial biomass, microbial respiration, the number of bacteria, actinomycetes, ammonifier, nitrite bacteria, denitrifier, aerobic azotobacter and aerobic cellulose decomposer decreased as the age of tea tree increased, which were significantly and positively correlated with the pH value of the rhizospheric soil(P < 0.01). The number of fungi, anerobic cellulose decomposer and sulphate reducer increased as the age of tea tree increased, which were significantly and negatively correlated with the pH value rhizospheric soil(P < 0.01). Sensitivity analysis result showed that responses of different microbial indexes to soil pH value presented microbial respiration (8.7218) > bacteria (8.4287) > microbial biomass (7.9552) > sulphate reducer (7.7268) > actinomycetes (5.7800) > fungi (4.7408) > anerobic cellulose decomposer (4.0650) > ammonifier (3.7606) > aerobic azotobacter (2.3683) >denitrifier (2.3406) > microbial biomass (2.3242) > nitrite bacteria (2.2198) > aerobic cellulose decomposer (1.7720). In brief, the acidity of tea tree rhizospheric soil had significant effect on the number of microbe, and different indexes of the microbe had different sensitivity to rhizospheric soil acidity. To explore effect of soil acidification on the microbial biomass and the flora at the root of tea tree, the rhizospheric soils of Huangjingui with different ages were used as materials, and effects of rhizospheric pH value on the microbial biomass, the number of microbe and microbial populations were analyzed. Meanwhile, the sensitivity of soil microbe response to acidification was got. The results showed that the microbial biomass, microbial respiration, the number of bacteria, actinomycetes, ammonifier, nitrite bacteria, denitrifier, aerobic azotobacter and aerobic cellulose decomposer decreased as the age of tea tree increased, which were significantly and positively correlated with the pH value of the rhizospheric soil(P < 0.01). The number of fungi, anerobic cellulose decomposer and sulphate reducer increased as the age of tea tree increased, which were significantly and negatively correlated with the pH value rhizospheric soil(P < 0.01). Sensitivity analysis result showed that responses of different microbial indexes to soil pH value presented microbial respiration (8.7218) > bacteria (8.4287) > microbial biomass (7.9552) > sulphate reducer (7.7268) > actinomycetes (5.7800) > fungi (4.7408) > anerobic cellulose decomposer (4.0650) > ammonifier (3.7606) > aerobic azotobacter (2.3683) >denitrifier (2.3406) > microbial biomass (2.3242) > nitrite bacteria (2.2198) > aerobic cellulose decomposer (1.7720). In brief, the acidity of tea tree rhizospheric soil had significant effect on the number of microbe, and different indexes of the microbe had different sensitivity to rhizospheric soil acidity.

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Last Update: 2016-06-25