| Soil quality change under different fertilization patterns on the Tibetan Plateau farmland |
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| DOI：10.7606/j.issn.1000-7601.2018.03.22 |
| Key Words: fertilization pattern soil quality farmland Tibetan Plateau |
| Author Name | Affiliation | | LI Meng | Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences/Lhasa Plateau Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Beijing 100101, China
University of Chinese Academy of Sciences, Beijing 100049, China | | HE Yong-tao | Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences/Lhasa Plateau Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Beijing 100101, China
College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100190, China | | SUN Wei | Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences/Lhasa Plateau Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Beijing 100101, China | | LI Shao-wei | Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences/Lhasa Plateau Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Beijing 100101, China | | ZHONG Zhi-ming | Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences/Lhasa Plateau Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Beijing 100101, China | | YU Cheng-qun | Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences/Lhasa Plateau Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Beijing 100101, China | | ZHANG Yang-jian | Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences/Lhasa Plateau Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Beijing 100101, China
College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100190, China | | ZHANG Xian-zhou | Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences/Lhasa Plateau Ecological Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Beijing 100101, China
College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100190, China |
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| Abstract: |
| Based on monitoring data from an 8-year long-term fertilization experiment on the Tibetan Plateau farmland by Lhasa Plateau Ecological Research Station, Chinese Academy of Sciences, effects of different fertilization treatments on part of indicators of soil quality (soil mechanical composition, soil bulk density, organic matters, pH, microbial biomass C) were studied. Compared with the chemical fertilizer plot, soil quality of farmland applying sheep manure merely and sheep manure and chemical fertilizer simultaneously showed significant difference：(1) The gravel particle content increased but silt and clay particle content decreased in 0~20 cm soil layer;(2) Top soil bulk density decreased by 10.1% and 10.0%, respectively; (3) Soil organic content increased by 72.8% and 65.6%, and the soil pH was stabilized; (4) The soil microbial biomass increased significantly in farmland. Soil microbial biomass carbon average in farmland after fertilization ranked as following: Manure > Manure + Chemical Fertilizer > CK > Chemical Fertilizer during highland barley growth season and post-harvest season.Above results suggested that application of manure can significantly improve the soil quality in plateau farmland, therefore more organic fertilizer should be returned to the farmland in Tibet. |
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