ORIGINAL RESEARCH article
Front. Plant Sci.
Sec. Plant Nutrition
Volume 16 - 2025 | doi: 10.3389/fpls.2025.1572868
This article is part of the Research TopicInterplay Between Plant Nutrient Uptake and Abiotic StressView all 3 articles
Effects of different microbial inoculants on the characteristics of straw decomposition and nutrient release and extracellular enzyme activities
Provisionally accepted
- 1黑龙江八一农垦大学, 黑龙江省, China
- 2College of Agricultural, Heilongjiang Bayi Agricultural University, Heilongjiang, China
- 3Department of Foreign Language, Kunlun Tourism College, Harbin, China, Harbin, China
- 4Nadanbo Township Comprehensive Service Center, Dongfeng County, Liaoyuan City, Jilin Province, China, JiLin, China
- 5Lindian County Agricultural Machinery Comprehensive Service Center, Lindian County, Daqing City, Heilongjiang Province, China, Daqing, China
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Understanding the relationship between the different microbial inoculants and straw decomposition is crucial for achieving high yield in agriculture. This study investigated the effects of different microbial inoculants on nutrient release characteristics and extracellular enzyme activities. A pot experiment was conducted in two growing seasons (2023 and 2024), and the soybean (Glycine max L. Merrill) cultivar was Nongqing 28, corn straw as the test straw, and Bacillus sp. ND1 and Bacillus sp. ND2 as the test fungicides. The following treatments were used: straw + no microbial agent application (CK), straw + Bacillus sp. ND1 application (T1), straw + Bacillus sp. ND2 application (T2), and straw + application of 1:1 Bacillus sp. ND1 and Bacillus sp. ND2 compound bacteria (T3). The results indicated that, compared with the CK treatment, the T1, T2 and T3 treatments resulted in a significant increase in the straw decomposition rate; a gradual decrease in the hemicellulose content; a gradual increase in the nitrogen, phosphorus and potassium release rates from straw; a gradual increase in the extracellular enzyme activities; and a gradual increase of the soybean yield in the R2, R4, R6 and R8 periods. Compared with the T1 and T2 treatments, the T3 treatment R8 period resulted in a significant increase in the straw decomposition rate; the R4 and R6 periods resulted in a significant decrease in the straw nitrogen release rate and phosphorus release rate; the R2 and R4 periods of straw exo-beta-1,4-glucanase content and straw xylanase content increased significantly.Compared with that in the CK treatment, the yield of soybean in the T3 treatment increased by 24.00%-28.00% (P<0.05). In summary, T3 treatment can accelerate straw decomposition and nutrient release rates, increase soybean yield, and provide a theoretical basis for optimizing the straw decomposition effect and rational utilization of organic resources by promoting the activity of extracellular enzymes and the degradation of straw cellulose, hemicellulose and lignin.
Keywords: straw, Decomposition effect, Nutrient release rate, extracellular enzyme activity, Soybean yield
Received: 07 Feb 2025; Accepted: 31 Mar 2025.
Copyright: © 2025 王, Zhang, Lu, Wang, 王, Hu, LI, Xie, Hu and Guo. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Mingcong Zhang, College of Agricultural, Heilongjiang Bayi Agricultural University, Heilongjiang, China
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