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Rotary and subsoiling tillage rotations influence soil carbon and nitrogen sequestration and crop yield

Author

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  • Shuwei Zhu

    (State Key Laboratory of Crop Biology, Key Laboratory of Crop Water Physiology and Drought Tolerance Germplasm Improvement of Ministry of Agriculture, College of Agronomy, Shandong Agricultural University, Tai'an, P.R. China)

  • Tianping Gao

    (State Key Laboratory of Crop Biology, Key Laboratory of Crop Water Physiology and Drought Tolerance Germplasm Improvement of Ministry of Agriculture, College of Agronomy, Shandong Agricultural University, Tai'an, P.R. China)

  • Zhen Liu

    (State Key Laboratory of Crop Biology, Key Laboratory of Crop Water Physiology and Drought Tolerance Germplasm Improvement of Ministry of Agriculture, College of Agronomy, Shandong Agricultural University, Tai'an, P.R. China
    Shandong Key Laboratory of Eco-Environmental Science for the Yellow River Delta, Binzhou University, Binzhou, Shandong, P.R. China)

  • Tangyuan Ning

    (State Key Laboratory of Crop Biology, Key Laboratory of Crop Water Physiology and Drought Tolerance Germplasm Improvement of Ministry of Agriculture, College of Agronomy, Shandong Agricultural University, Tai'an, P.R. China)

Abstract

Long-term single tillage causes serious deterioration of land quality and reduction of crop yield. Tillage rotation can alleviate the problems caused by long-term single tillage. However, the effects of different tillage rotations are still very limited. A tillage rotation experiment was conducted in the North China Plain to evaluate the impacts of tillage rotation on soil organic carbon (SOC), soil total nitrogen (STN) and crop yield. There were eight treatments with two main factors: tillage practice (four types: rotary tillage (R, 2002-2017), subsoiling tillage (S, 2002-2017), rotary to subsoiling tillage (RS, 2015-2017) and subsoiling to rotary tillage (SR, 2015-2017)) and straw management (two types: straw return (F) and straw removal (0)). RSF treatment yielded the highest SOC, at 12.53 g/kg. RSF significantly increased SOC by 41.4% compared to RF, while SRF significantly reduced SOC by 11.1% compared to SF. In addition, RSF significantly increased STN content by 21.7% compared with that under RF. Compared with SF, SRF promoted the uniform distribution of soil nitrogen in the 0-20 cm soil layer. Among the treatments, the RSF treatment yielded the highest SOC stock (SOCS) and STN stock (STNS), which were 67.68 t/ha and 6.63 t/ha, respectively. Compared with RF treatment, RSF treatment greatly increased SOCS, by 31.7%. Both tillage rotation treatments increased STNS by 13.3% under RSF compared to RF, and by 2.3% under SRF compared to SF. In 2016, the annual yield was highest under RSF treatment at 19.80 t/ha. In 2017, the annual yield was highest under SF treatment at 21.37 t/ha, and next highest under RSF at 20.94 t/ha. In summary, long-term rotary tillage followed by subsoiling tillage combined with straw return (RSF) can significantly increase SOC, STN and crop yield. The rotation of rotary tillage to subsoiling tillage combined with the straw return is an effective measure for improving soil quality and increasing crop yields in the North China Plain.

Suggested Citation

  • Shuwei Zhu & Tianping Gao & Zhen Liu & Tangyuan Ning, 2022. "Rotary and subsoiling tillage rotations influence soil carbon and nitrogen sequestration and crop yield," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 68(2), pages 89-97.
    • Handle: RePEc:caa:jnlpse:v:68:y:2022:i:2:id:396-2021-pse
    DOI: 10.17221/396/2021-PSE
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    References listed on IDEAS

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    1. Shaobo Wang & Liangliang Guo & Pengchong Zhou & Xuejie Wang & Ying Shen & Huifang Han & Tangyuan Ning & Kun Han, 2019. "Effect of subsoiling depth on soil physical properties and summer maize (Zea mays L.) yield," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 65(3), pages 131-137.
    2. Z. Guo & D.Z. Wang, 2013. "Long-term effects of returning wheat straw to croplands on soil compaction and nutrient availability under conventional tillage," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 59(6), pages 280-286.
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