喜德县红莫镇土地宜耕性评价

发布时间：2018-06-24 08:01

本文选题：土地整治 + 适宜性　；参考：《成都理工大学》2015年硕士论文

【摘要】：我国是个农业大国,但人多地少的矛盾日益突出,在有限的耕地使用面积上,需要合理利用资源、发展高效农业。农业发展的关键是科学种植作物,作物生长的好坏依赖于土地的宜耕性。土地的宜耕性决定了土壤的耕作措施、时间和质量,通过对耕地的宜耕性分析,指出影响耕作的限制性因素,从而有针对性地采取土地整治措施,改善耕作条件,提高耕作的质量和效益。本文以喜德县红莫镇土地整治项目为研究内容,选取研究区内具代表性的三种地类(水田、旱地和宜耕未利用地)为重点研究对象,分别对其在土地整理前和土地整理后的宜耕性进行分析、对比、评价,目的是了解耕地在土地整理前后的差异性。深入分析研究区域的自然环境条件和社会环境条件,根据区域特点选取灌溉保证度、排水条件、土壤侵蚀程度、土壤有机质含量、地表岩石露头度、表层土壤质地、土壤酸碱度、有效土层厚度、地形坡度、海拔高度、作物种植率、交通网连接度、水网密度指数、人口承载力和作物净收益系数15个指标作为参评因子。这15个指标又被归纳为水分条件、土壤条件、耕作条件和社会条件4大要素。因子之间相互关联、相互影响。采用层次分析法对要素层和因子层进行权重值判定,建立宜耕性评价指标体系。通过收集研究区土地整治前后的文献资料、调查数据和遥感影像,提炼出耕地在土地整理前后的性质指标变化,代入宜耕性指标体系进行测算分析,最后得出结论:科学的土地整理对土地宜耕性程度有明显的提高,评价体系对土地整治工作的开展提供一定的理论依据,能从中分析出改善土地质量的有效因素和影响耕种的限制性因素。
[Abstract]:China is a big agricultural country, but the contradiction between people and land is more and more serious. In the limited area of cultivated land, it is necessary to use resources reasonably and develop efficient agriculture. The key to the development of agriculture is to grow crops scientifically. The quality of crop growth depends on the cultivability of land. The suitable tillage property of land determines the tillage measure, time and quality of soil. Through the analysis of arable land suitability, the restrictive factors affecting tillage are pointed out, and land remediation measures are taken to improve tillage conditions. Improve the quality and efficiency of farming. This paper takes Hongmo Town Land Regulation Project in Xide County as the research content, and selects three representative land types (paddy field, dry land and unexploited land) as the main research object. The difference of arable land before and after land consolidation was analyzed, compared and evaluated. The natural and social conditions of the region are analyzed in depth. According to the regional characteristics, irrigation guarantee degree, drainage condition, soil erosion degree, soil organic matter content, outcrop degree of surface rock, texture of surface soil are selected. Soil pH, effective soil layer thickness, topographic slope, elevation, crop planting rate, traffic network connectivity, water network density index, population carrying capacity and crop net income coefficient were taken as the evaluation factors. These 15 indexes were classified into four main factors: water condition, soil condition, tillage condition and social condition. The factors are interrelated and influence each other. The weight of factor layer and factor layer was determined by AHP, and the evaluation index system of suitability for tillage was established. By collecting the literature, investigating data and remote sensing images before and after land renovation in the study area, the author abstracts the change of the property index of cultivated land before and after land consolidation, and then calculates and analyzes the index system of suitable tillage. Finally, it is concluded that scientific land consolidation can obviously improve the degree of land suitability, and the evaluation system can provide some theoretical basis for the development of land regulation. The effective factors to improve land quality and the restrictive factors affecting cultivation can be analyzed.
【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S151.9;F323.211

【参考文献】