[1]SONG Yahui,AI Zemin,QIAO Leilei,et al.Effects of Fertilization on Ecological Stoichiometric Ratio Soil Carbon, Nitrogen and Phosphorus in Farmland of the Loess Plateau[J].Research of Soil and Water Conservation,2019,26(06):38-45,52.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 06
Page number:
38-45,52
Column:
Public date:
2019-10-17
- Title:
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Effects of Fertilization on Ecological Stoichiometric Ratio Soil Carbon, Nitrogen and Phosphorus in Farmland of the Loess Plateau
- Author(s):
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SONG Yahui1,2, AI Zemin3, QIAO Leilei4, ZHAI Jiaying1,2, LI Yuanze5, LI Yangyang1,4
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1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, CAS & MWR, Yangling, Shaanxi 712100, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. College and Geomatics, Xi’an University of Science & Technology, Xi’an 710054, China;
4. Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China
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- Keywords:
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farmland; fertilization; age; soil layer; stoichiometric ratio
- CLC:
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S153.6+1
- DOI:
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- Abstract:
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In order to study the effects of different fertilization methods on soil carbon, nitrogen, phosphorus content and soil C:N:P, the experiment was conducted at the Ansai Research Station of Soil and Water Conservation of the Chinese Academy of Sciences. The experiment was consisted of 9 treatments:Nitrogenous fertilizer (N), Phosphate fertilizer (P), Organic manure (M), Nitrogenous fertilizer + Phosphate fertilizer (NP), Nitrogenous fertilizer + Organic manure (MN), Phosphate fertilizer + Organic manure (MP), Nitrogenous fertilizer + Phosphate fertilizer + Organic manure (MNP), crops without fertilization (CK) and no crop or fertilization (BL). All treatments were arranged in a completely randomized block design. Continuous fertilization for three years from 2011 to 2013, and soil samples were randomly collected from each treatment in October of each year after harvest and then prepared for analysis. The farmland fertilization would significantly affected the surface (0-20 cm) and shallow (20-40 cm) soil carbon, nitrogen and phosphorus concentrations, and MP fertilizer application can significantly improve the surface and shallow soil carbon, nitrogen and phosphorus concentrations, when compared CK treatment were increased by 26.9% to 55.2%, 24.0% to 57.5% and 10.4% to 42.5%, respectively. The effects of the age of fertilization on soil carbon, nitrogen and phosphorus concentrations was more obviously in the shallow soil than that in the surface soil. Fertilization had an significantly affected on soil C:P and N:P. MP fertilizer could significantly increase the shallow soil C:P with 14.2% to 18.8%. The effect of the age of fertilization on C:N:P of shallow soil was more obvious, and the effect was the most significant with NP or MN fertilizer. The difference between surface and shallow soil C:N:P were obvious, and the different was the most significant, which reached 14.5% to 16.2%, 56.6% to 71.9% and 46.5% to 52.2%, respectively. Fertilization had a significant influence on farmland soil carbon, nitrogen and phosphorus concentrations, and C:N and N:P. The effect of different fertilization treatments on different soil layers was different, and it was change with the increase of the age of fertilization. The changes were more clearly with the MN or MP fertilizer.