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Impact of Fertilizer on Crop Yield and C:N:P Stoichiometry in Arid and Semi-Arid Soil

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  • Qiang Liu

    (College of Resources and Environmental Engineering, Tianshui Normal University, Tianshui 741000, China
    State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Hongwei Xu

    (State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

  • Haijie Yi

    (State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China
    University of Chinese Academy of Sciences, Beijing 100049, China)

Abstract

Fertilization can significantly affect the quality of crop and soil. To determine the effects of long-term fertilization on crop yield and carbon:nitrogen:phosphorus (C:N:P) stoichiometry in soil, a study was conducted on the terraced fields of the Loess Plateau from 2007 to 2019. Nine fertilization treatments were included: no fertilizer; organic fertilizer (O); organic and nitrogen fertilizers (ON); organic, nitrogen, and phosphorus fertilizers (ONP); organic and phosphorus fertilizers (OP); phosphorus and nitrogen fertilizers; potash and nitrogen fertilizers; potash, nitrogen, and phosphorus fertilizers; and potash and phosphorus fertilizers. Under these treatments except for CK and PK, crop yields initially decreased but later increased. The nutrient content and C:N:P stoichiometry increased in soil depth of 0–20 cm. The soil available nutrients did not change significantly with the duration of fertilization. The O, ON, ONP, and OP had the most evident effect on the enhancement of soil nutrient content, whereas O and ON had the most evident effect on the increase in soil organic carbon (SOC):total phosphorus (TP) and total nitrogen (TN):TP. In soil depth of 0–20 cm, crop yield, SOC:TN, SOC:TN, SOC:TP, and TN:TP significantly correlated with soil nutrients. This study indicated that long-term fertilization can effectively improve crop yield, soil fertility, and soil C:N:P stoichiometry. Meanwhile, the single application of an organic fertilizer or the combination of organic and nitrogen fertilizers can improve the condition of nitrogen limitation in arid and semi-arid areas.

Suggested Citation

  • Qiang Liu & Hongwei Xu & Haijie Yi, 2021. "Impact of Fertilizer on Crop Yield and C:N:P Stoichiometry in Arid and Semi-Arid Soil," IJERPH, MDPI, vol. 18(8), pages 1-12, April.
    • Handle: RePEc:gam:jijerp:v:18:y:2021:i:8:p:4341-:d:539324
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    References listed on IDEAS

    as
    1. Qiang Liu & Hongwei Xu & Xingmin Mu & Guangju Zhao & Peng Gao & Wenyi Sun, 2020. "Effects of Different Fertilization Regimes on Crop Yield and Soil Water Use Efficiency of Millet and Soybean," Sustainability, MDPI, vol. 12(10), pages 1-13, May.
    2. Jiaying Zhai & Yahui Song & Wulan Entemake & Hongwei Xu & Yang Wu & Qing Qu & Sha Xue, 2020. "Change in Soil Particle Size Distribution and Erodibility with Latitude and Vegetation Restoration Chronosequence on the Loess Plateau, China," IJERPH, MDPI, vol. 17(3), pages 1-15, January.
    3. Colin A. Carter & Funing Zhong & Jing Zhu, 2012. "Advances in Chinese Agriculture and its Global Implications," Applied Economic Perspectives and Policy, Agricultural and Applied Economics Association, vol. 34(1), pages 1-36.
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