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. 2022 Apr 27;79(6):172.
doi: 10.1007/s00284-022-02863-z.

Combined System of Organic Substrate and Straw-Degrading Microbial Agents Improved Soil Organic Matter Levels and Microbial Abundance in a Rice-Wheat Rotation

Shi-Li Song #  1 , Xue Luo #  1 , Hao Wu  1 , Xiao-Lin Lu  1 , Fang-Ji Xu  1 , Zhen-Hua Zhang  2 , Yong-Xiang Guan  3 , Chuan-Chao Dai  4
Affiliations

Combined System of Organic Substrate and Straw-Degrading Microbial Agents Improved Soil Organic Matter Levels and Microbial Abundance in a Rice-Wheat Rotation

Shi-Li Song et al. Curr Microbiol. .

Abstract

Rice-wheat rotation is one of the most intensive agricultural planting modes in China and is pivotal to develop optimized straw-returning management in situ to improve soil fertility and productivity in agricultural ecosystems. Previous studies have mainly focused on the effects of straw return with a single application of organic fertilizers. The integrated management of different fertilizers in improving the management of straw return in situ is not well known. In this study, a field experiment was conducted from 2017 to 2019 to explore the effects of a combined system of modified organic substrate (MOS) and straw-degrading compound microbial agent (CMA) on soil physiochemical properties, labile organic carbon, microbial activities, and soil microbial community composition under the background of direct crop straw return and chemical fertilizer utilization. Four treatments were designed: (1) control check; (2) CMA; (3) MOS; and (4) MOS + CMA. The results showed that the MOS + CMA treatment had the combined advantages of soil organic matter (SOM) accumulation, soil nutrient increase and soil microbial community alteration, which may be more suitable for improving the quality and fertility of sandy loam soil. This study provides novel insights for further understanding the effects of organic substrates and composite microbial agents on SOM changes and microbial community composition and function in the field, which has important implications for sustainable crop production and agricultural development.

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References

    1. Liu C, Lu M, Cui J, Li B, Fang CM (2014) Effects of straw carbon input on carbon dynamics in agricultural soils: a meta-analysis. Glob Change Biol 20:1366–1381. https://doi.org/10.1111/gcb.12517 - DOI
    1. Tian K, Zhao YC, Xu XH, Hai N, Huang BA, Deng WJ (2015) Effects of long-term fertilization and residue management on soil organic carbon changes in paddy soils of China: a meta-analysis. Agric Ecosyst Environ 204:40–50. https://doi.org/10.1016/j.agee.2015.02.008 - DOI
    1. Zheng L, Wu WL, Wei YP, Hu KL (2015) Effects of straw return and regional factors on spatio-temporal variability of soil organic matter in a high-yielding area of northern China. Soil Tillage Res 145:78–86. https://doi.org/10.1016/j.still.2014.08.003 - DOI
    1. Zhu LQ, Hu NJ, Zhang ZW, Xu JL, Tao BR, Meng YL (2015) Short-term responses of soil organic carbon and carbon pool management index to different annual straw return rates in a rice-wheat cropping system. CATENA 135:283–289. https://doi.org/10.1016/j.catena.2015.08.008 - DOI
    1. Chen ZM, Wang HY, Liu XW, Zhao XL, Lu DJ, Zhou JM, Li CZ (2017) Changes in soil microbial community and organic carbon fractions under short-term straw return in a rice-wheat cropping system. Soil Tillage Res 165:121–127. https://doi.org/10.1016/j.still.2016.07.018 - DOI

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