【摘要】 耕地是农业生产的重要生产资料,其质量关系到我国的粮食安全,以及社会经济稳定与可持续发展。将遥感技术引入到耕地质量评价中,可使耕地评价工作更加科学与客观。运用卫星遥感技术获取遥感影像,并获取研究区域内100个样本点的氮、磷、钾和有机质含量。通过对研究区域内耕地养分质量和耕地生产力质量进行评价,构建耕地综合遥感监测评价模型,实现耕地质量综合评价。运用该模型对衡水市安平县冬小麦-夏玉米轮作区的耕地质量进行了综合评价。评价结果表明:安平县一等和二等耕地数量较少,且分布零散,主要集中在研究区域的西南部、东北部和北部地区;三等和四等耕地数量较多,分布相对广泛,这些耕地土壤环境质量较差,中低产田仍然存在,在未开发利用的土地中存在一定面积的盐碱地。根据评价结果及研究区域的土壤特点,提出了完善灌溉系统建设、加强土壤培肥措施实施的建议,以提高土壤肥力,保证小麦生产的顺利进行。更多还原

【Abstract】 Cultivated land is the important means of in agricultural production,and its quality is related to food security of our country,as well as the social and economic stability and sustainable development. The introduction of remote sensing technology to the evaluation of cultivated land quality can make the evaluation more scientific and objective. Satellite remote sensing technology was used to obtain remote sensing images, and the contents of nitrogen,phosphorus,potassium and organic matter in 100 sample sites were obtained. By evaluating the quality of cultivated land nutrient and productivity in the study area, the comprehensive remote sensing monitoring and evaluation model of cultivated land was established to realize the comprehensive evaluation of cultivated land quality. The model was used to evaluate the cultivated land quality of winter wheat-summer maize rotation area in Anping County,Hengshui City. The evaluation results showed that the first-class and second-class cultivated land in Anping County were fewer and scattered,mainly concentrated in the southwest, northeast and northern areas of Anping. The third-class and fourth-class cultivated land were more and widely distributed. The soil environment quality of these cultivated land was poor,the middle and low yield fields still existd,and there was a certain area of saline-alkali land in the undeveloped land. Based on the evaluation results and the soil characteristics of the study area,suggestions were put forward to improve the construction of irrigation system and strengthen the implementation of soil fertility measures in order to improve soil fertility and ensure the smooth of wheat production.更多还原