| Characters of different tillage treatments on soil enzymes and microflora in the southern Mu Us desert |
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| DOI：10.7606/j.issn.1000-7601.2011.01.17 |
| Key Words: tillage treatment soil microorganism soil nutrient soil enzyme relevance |
| Author Name | Affiliation | | CAO Weipeng | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China | | WU Faqi | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China | | LEI Jinyin | Institute of Agricultural Resources and Environment, Ningxia Academy of Agriculture and Forestry, Yinchuan, Ningxia 750002, China | | ZHAO Longshan | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China | | YUN Feng | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China | | YU Xiaoling | College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| Farmland in typical arid and semiarid agro-pastoral ecotone was selected to explore characteristics of soil enzymes and microflora in different tillage treatments based on six-year experiment. The results indicate: 1) In 0～20 cm soil layer, catalase activity was the highest in the NT measure; phosphatase activity was significantly higher in SM and NT measures than CT and FM measures; urease activity was the lowest in SM measures; sucrase activity was significantly higher in SM measures than in the remaining measure. In 20～40 cm soil layer, phosphatase, urease and invertase activity was high in NT measure. 2) Catalase activity was decreased with soil depth increased in the SM measure, increased first and then decreased in NT measure; in 40～60 cm soil layer catalase activity was higher than in 0～40 cm in CT measure; the remaining soil enzymes activities (phosphatase, urease, invertase) were decreased with soil depth increasing, obvious stratification in NT and SM measures. 3) The number of soil microorganisms was varimax in 0～20 cm, changed little in 20～40 cm soil layer. In 0～20 cm layer the number of soil microorganisms were significantly higher in SM and NT measure than in CT and FM measures. 4) The number of soil microorganisms were decreased with s
oil depth increasing in soil vertical section, the number of soil microorganisms differed significantly in SM and NT measures. |
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