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| Effects of microbial fertilizer combined with chemical fertilizer on the Brassica chinensis L. growth and soil environment in facility vegetable soils |
| Received:September 11, 2024 |
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| KeyWord:microbial fertilizer;fertilization mode;facility vegetable field;yield and quality;soil improvement;microbial community |
| Author Name | Affiliation | E-mail | | ZHANG Siyi | Eco-environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China | | | ZHANG Tinglin | Shanghai Qingpu Agricultural Technology Extension Service Center, Shanghai 201799, China | | | YANG Junfeng | Shanghai Qingpu Agricultural Technology Extension Service Center, Shanghai 201799, China | | | Lü Weiguang | Eco-environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
Key Laboratory of Low-carbon Green Agriculture in Southeastern China, Ministry of Agriculture and Rural Affairs, Shanghai 201403, China | | | LI Shuangxi | Eco-environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
Key Laboratory of Low-carbon Green Agriculture in Southeastern China, Ministry of Agriculture and Rural Affairs, Shanghai 201403, China | | | CHEN Zhaoliang | Eco-environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China | | | ZHANG Hanlin | Eco-environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
Key Laboratory of Low-carbon Green Agriculture in Southeastern China, Ministry of Agriculture and Rural Affairs, Shanghai 201403, China | | | ZHANG Haiyun | Eco-environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China | | | ZHANG Juanqin | Eco-environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China | | | BAI Naling | Eco-environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
Key Laboratory of Low-carbon Green Agriculture in Southeastern China, Ministry of Agriculture and Rural Affairs, Shanghai 201403, China | bainaling@saas.sh.cn |
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| Abstract: |
| To explore the effects of microbial fertilizer combined with chemical fertilizer on vegetable growth and soil environment in facility vegetable soils, a field plot experiment was carried out. Five fertilization treatments were established：100% compound chemical fertilizer（T1）, 80% compound chemical fertilizer + microbial fertilizer（T2）, 60% compound chemical fertilizer + microbial fertilizer（T3）, 40% compound chemical fertilizer + microbial fertilizer（T4）, and 100% microbial fertilizer（T5）. Physiological and biochemical measurement and high-throughput sequencing analysis were employed. The agronomic traits, yield, and quality of Brassica chinensis L., soil physicochemical properties, enzyme activity, and the microbial community under different treatments were analyzed. The results indicated that compared to the T1 treatment, T2-T5 treatments all increased the yield of Chinese cabbage（with an increase range of 0.35%-13.51%, P>0.05）, among which T2 treatment yielded the highest production（45.97 t·h m-2）. The application of microbial fertilizer improved the agronomic traits and quality of Chinese cabbage. Specifically, T3 treatment significantly increased the plant height and maximal leaf width of Chinese cabbage（with an increase of 13.35% and 10.91%, respectively, P<0.05）; T2 treatment significantly increased the soluble sugar content in Chinese cabbage（with an increase of 37.93%, P<0.05）; T2-T5 treatments all significantly reduced the nitrate nitrogen content in Chinese cabbage（P<0.05）. Except for soil total potassium, available nitrogen, and electrical conductivity, the different treatments of combined application of microbial fertilizer and chemical fertilizer did not significantly affect the soil physicochemical properties. Compared with other treatments（excluding T2）, the T3 treatment significantly increased soil urease activity（P< 0.05）; T2 treatment significantly increased soil sucrase activity（77.13 mg·d-1·g-1）compared to T5 treatment（P<0.05）. Excessively low application of chemical fertilizer（T4 and T5 treatments）significantly reduced the soil bacterial community richness（Chao1 and Sobs indices）. Different treatments significantly influenced the structure and composition of soil bacterial and fungal communities, with notable differences in the relative abundances of bacteria（such as Tumebacillus）and fungi（including Cladosporium, Alternaria, and Trichoderma） at genus level. Soil organic matter and peroxidase activity are significantly correlated with the bacterial community structure, while available potassium, total potassium, ammonium nitrogen and soil enzyme activity are significantly correlated with the fungal community structure. Furthermore, the input-output ratio analysis revealed that T2 and T3 treatments increased the income by 12 090 yuan·h m-2 and 7 620 yuan·h m-2, respectively, compared to the T1 treatment. In summary, the short-term field experiment shows that the rational combined application of microbial fertilizer and chemical fertilizer can, to a certain extent, improve the soil physicochemical properties and microbial enzyme activities in facility vegetable fields, reshape the soil microbial community structure, increase the vegetable yield and quality, and improve economic benefit. The application of 60%-80% compound fertilizer combined with microbial fertilizer achieves better results. |
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