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| Study on the Use of Waste Liquid from Corn Straw Acetic Acid Pulping as Soil Conditioners |
| Received:March 18, 2025 Revised:March 23, 2025 |
| DOI：10.11980/j.issn.0254-508X.2025.08.005 |
| Key Words:corn stalk acetic acid pulping pulping waste liquid soil improvement |
| Fund Project:辽宁省振兴人才培养计划（XLYC1802025）；兴辽英才计划（XLYC1802025）。 |
| Author Name | Affiliation | Postcode | | XU Danjie* | School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, Liaoning Province, 116034 | 116034 | | PING Qingwei* | School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, Liaoning Province, 116034 | 116034 | | SHANG Jin | School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, Liaoning Province, 116034 | 116034 | | SHENG Xueru | School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, Liaoning Province, 116034 | 116034 | | ZHANG Jian | School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, Liaoning Province, 116034 | 116034 | | LI Na | School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, Liaoning Province, 116034 | 116034 | | WANG Bing | School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, Liaoning Province, 116034 | 116034 |
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| Abstract:In this study， the waste liquid from acetic acid pulping of corn straw (referred to as degradation liquid) was used. Through potting experiments， the effects of different dilution ratios (25~200 times) of degradation liquid on soil physicochemical properties， enzyme activities， and the growth of leafy vegetable plants were explored. The results showed that the degradation liquid contained various components such as sugars and small molecule organic acids. The application of degradation solution could increase the content of soil organic matter， decrease the pH value， increase the electrical conductivity， and enhance the activities of sucrase and phosphatase. When the dilution ratio was greater than 100 times， the soil bulk density decreased， the water content increased， the contents of total phosphorus and available phosphorus both increased， and the activities of urease and catalase both decreased. When the dilution ratio was greater than 50 times， the content of ammonium nitrogen of soil increased. Degradation solutions diluted 50 to 200 times could all promote plant growth， among which the plants treated with degradation solution diluted 100 times had the best growth. In conclusion， the entire component of the waste liquid from acetic acid pulping of corn stalks could be used to improve soil quality. The degradation liquid at an appropriate concentration could effectively enhance the physical properties， chemical fertility， and biological fertility of the soil， and promote the growth of crops. |
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