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- Title
都市区土地整治初期对耕地土壤肥力的影响.
- Authors
林栗漾; 鲜骏仁; 刘静静
- Abstract
【Objective】The present paper aimed to reveal the characteristics and changes in soil fertility during the initial stages of land consolidation and provide scientific insights for urban land consolidation, land resource preservation, and sustainable integrated management of agricultural resources.【Method】Surface soil samples from traditional farmland and high-standard farmland at the initial stages of land consolidation were collected and analyzed. Soil physical properties such as bulk density, particle composition, moisture content, and porosity, as well as soil chemical indicators including pH, organic matter, total nitrogen, total phosphorus, alkaline hydrolysis nitrogen, available phosphorus, and cation exchange capacity, were assessed. An improved Nemero index method was employed to evaluate changes in soil fertility after land consolidation, and principal component analysis(PCA) was used to identify the primary influencing factors on soil fertility changes.【Result】Urban land consolidation had no significant impact on soil physical properties(P>0.05), but it significantly reduced the pH, organic matter, total nitrogen, available phosphorus, and total phosphorus content of surface soil(P<0.05). After land consolidation, the comprehensive soil fertility index for cultivated land was 1.17±0.57, with soil fertility predominantly classified as grade III. Soil phosphorus was identified as the primary limiting factor affecting the improvement of soil fertility during the initial stages of land consolidation.【Conclusion】During the initial stages of land consolidation, urban farmland exhibited a decreasing trend in soil physicochemical indicators and soil fertility. Strengthening soil nutrient management and fertilization during the early phases of land consolidation is crucial for enhancing urban land productivity.
- Subjects
LAND consolidation; METROPOLITAN areas; SOILS
- Publication
Southwest China Journal of Agricultural Sciences, 2023, Vol 36, Issue 10, p2069
- ISSN
1001-4829
- Publication type
Article
- DOI
10.16213/j.cnki.scjas.2023.10.001