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| Effects of biochar-based organic fertilizer on the growth and soil properties of greenhouse tomatoes |
| Received:August 01, 2022 |
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| KeyWord:biochar-based organic fertilizer|soil|tomato|yield|nutrient absorption|quality |
| Author Name | Affiliation | E-mail | | LI Xia | College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, China
Institute of Environmental Resources and Soil Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
Zhejiang Biochar Engineering Technology Research Center, Hangzhou 310021, China | | | WANG Yuying | Institute of Environmental Resources and Soil Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
Zhejiang Biochar Engineering Technology Research Center, Hangzhou 310021, China | | | Lü Haohao | Institute of Environmental Resources and Soil Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
Zhejiang Biochar Engineering Technology Research Center, Hangzhou 310021, China | lvhao_1026@126.com | | HE Lili | Institute of Environmental Resources and Soil Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
Zhejiang Biochar Engineering Technology Research Center, Hangzhou 310021, China | | | LIU Yuxue | Institute of Environmental Resources and Soil Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
Zhejiang Biochar Engineering Technology Research Center, Hangzhou 310021, China | | | WANG Shengsen | College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, China | | | YANG Shengmao | College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, China
Institute of Environmental Resources and Soil Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
Zhejiang Biochar Engineering Technology Research Center, Hangzhou 310021, China | yangshengmao@263.net |
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| Abstract: |
| Using a pot experiment, we studied the effects of biochar-based organic fertilizer on the physical and chemical properties of soil and tomato growth and provided basis and technical support for fertilizer reduction and increased productivity at tomato-growing facilities. The tomato variety tested was Zhefen 715, and the organic fertilizer used was composted rice straw and pig manure. The biochar-based organic fertilizers were made by mixing organic fertilizer with attapulgite rice hull biochar composite, rice hull biochar, and sludge biochar. Five treatments were set up：no base fertilizer（CK）, conventional fertilizer（CF）, mineral biochar-based organic fertilizer（CT1）, rice husk biochar-based organic fertilizer（CT2）, and sludge biochar-based organic fertilizer（CT3）. The effects of substituting 60% chemical fertilizer-derived N with N derived from each of the three biochar-based organic fertilizers were assessed based on soil quality, tomato growth, and nutrient content. The biochar-based organic fertilizer significantly improved the physical and chemical properties of soil, increased enzyme activity, promoted the development of chlorophyll content, and improved tomato yield and quality. Compared with the CF treatment, the CT1 treatment significantly increased soil pH value, total nitrogen, available potassium content, and soil urease and catalase activities, whereas the CT2 treatment significantly increased soil total nitrogen and organic matter contents and increased soil acid phosphatase and sucrose enzyme activities. Compared with the CF treatment, the CT2 treatment was more conducive to the accumulation of chlorophyll in tomato plants, thereby increasing the tomato yield by 14.9%. The amount of nitrogen absorption was also significantly increased in plants under CT2 treatment. In tomato plants grown under the CT2 and CT3 treatments, the contents of VC, soluble sugar, and nitrate increased by 16.5% and 19.5%, 14.7% and 12.1%, and 36.9% and 34.9% respectively, and the soluble solid content of tomatoes grown under CT1 and CT2 treatments increased by 14.8% and 25.9% compared with that of the tomatoes grown under the CF treatment. These results indicate that CT2 rice husk biochar-based organic fertilizer is optimal for improving the physical and chemical properties of soil, developing the chlorophyll content of tomato plants, increasing tomato yield, and improving tomato quality. |
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