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| Construction and verification of a comprehensive evaluation index system for soil improvement in farmland |
| Received:October 27, 2021 |
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| KeyWord:acidity;soil improvement;comprehensive evaluation;analytic hierarchy process(AHP) |
| Author Name | Affiliation | E-mail | | LI Qingrong | College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China | | | CHEN Jianjun | College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China | | | ZU Yanqun | College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China | | | HE Yongmei | College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China | | | ZHAN Fangdong | College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China | | | LI Bo | College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China | | | LI Yuan | College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China | liyuan@ynau.edu.cn |
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| Abstract: |
| This study aimed to establish a scientific, reasonable, and practical evaluation system for soil improvement in acidic farmland, and to provide a basis for evaluating this improvement. The relevant evaluation indexes were selected based on a literature review. The analytic hierarchy process was used to determine the index weights, and a comprehensive evaluation system was constructed to determine the soil improvement effect in acidic farmland. The results were verified through an experiment on acidic farmland in Lianghe County, Yunnan Province. Based on a keyword search in the literature, we screened for the occurrence of all indexes related to soil fertility, crop growth, and safety and economic benefits to determine the middle level indicators;soil organic matter, soil pH, exchangeable acidity, and 24 other parameters were evaluated to determine the lowest level indexes. Subsequently, the coefficient of each index weight was determined and a comprehensive evaluation index system was established to evaluate the acidic soil improvement effect. Based on the technique for order preference by similarity to an ideal solution(TOPSIS) weighting method, the improvement effect obtained in the field experiment was ranked in the order of synthesize qualitative cellulose 204(SQC204) >synthesize qualitative cellulose 201(SQC201) > synthesize qualitative Fe-Ce cellulose(SQFC-00S). The evaluation system constructed in this study can provide a reference and basis for the evaluation of the improvement effect of acidic farmland soil. |
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