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| Effects of the application of soil amended substrate medium on soil properties and microbial communities |
| Received:October 10, 2022 Revised:December 06, 2022 |
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| KeyWord:farmland renovation;wheat yield;poor soil;microbial community;soil property |
| Author Name | Affiliation | E-mail | | WU Hao | Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China | | | OUYANG Junfeng | Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China | | | SONG Shili | Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China | | | LU Xiaolin | Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China | | | ZHANG Zhenhua | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China | | | GUAN Yongxiang | General Station of Jiangsu Agricultural Technology Extension, Nanjing 210036, China | | | ZHANG Yong | Jurong Blue Sky Biological Technology Co., Ltd., Jurong 212402, China | | | DAI Chuanchao | Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Industrialization of Microbial Resources, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China | daichuanchao@njnu.edu.cn |
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| Abstract: |
| A one-year field study was conducted to study the effects of the combined application of chemical fertilizer and soil amended substrate medium（SM）, made from fermented and decomposing straw, on wheat yield and the soil microbial community in a typically lowyielding wheat-maize rotation area of the Yellow River died-riverway. The wheat yield and soil microbial community were subjected to five treatments：chemical fertilizer（CK, no soil amended substrate medium）, 3 000 kg·hm-2 soil amended substrate medium（SM1）, 6 000 kg·hm-2 soil amended substrate medium（SM2）, 9 000 kg·hm-2 soil amended substrate medium（SM3）, and 12 000 kg · hm-2 soil amended substrate medium（SM4）. In all the treatments, same amounts of chemical fertilizer were used. On treatment, the crop yield, soil properties, nutrition, and microbial community were analyzed. The results showed that the SM input increased the wheat production with the highest being 8 276.40 kg · hm-2, which is 1.32 times higher than the CK. Soil fertilization also increased the 16S and 18S gene copies and microbial diversity, of which the 15.3 folds and 7.8 folds were highest as the control, respectively. Increase in SM application proportionately increased the soil microbial biomass carbon, microbial biomass nitrogen, and various enzyme activities. The composition of soil fungal community was reported to be different for SM and CK. The study thus finds that microbial biomass carbon and soil organic matter are the main soil characteristics leading to the changes of the soil fungal community structure. Our research demonstrates an amendment strategy using SM as a source of organic matter for the improvement of sandy loam that has the potential to increase crop yield in alluvial sediments of the Yellow River. |
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