摘要：In order to achieve successful agriculture, it is necessary for sustainable use of the soil resources, because soils can lose their quality. Therefore, for sustainable agricultural practice is required basic knowledge regarding the rational use of the land. A success in soil management to maintain the quality depends on the understanding of how the soil responds to agricultural practices over time. Recent interest in evaluating the quality of our soil resource has therefore been simulated by increasing awareness that soil is a critically important component of the earth’s biosphere. Soil properties can be affected by land-use types, through addition and removal of the nutrient element. Therefore, an assessment of the soil fertility status is required periodically, to adopt appropriate land management practices; to increase soil productivity, resulting in high crop production.The aim of this study was to analyse the effect of land-use on physicochemical soil properties for different types of culture. Samples were collected according to horizon differentiation, and also at predetermined depths of 0-15 and 15-30 cm in all land use types, giving a total of 48 samples, humus, total N (TN); available P (AP); available K (AK); pH. Soil samples were collected from different uses of land, namely arable land, pastures, vineyards, hygrophilous vegetation, and unproductive land. Valea Oii is located in the north-eastern part of Romania and occupies a central-western position in the Bahlui watershed, having a catchment area of 97 km2. Soil chemical properties are the most important among the factors that determine the nutrient supplying power of the soil to the plants. The chemical reactions that occur in the soil affect soil development and fertility. To increase soil organic matter and other nutrients in the soil of cultivated land, it is proposed to implement on a large scale some elementary measures for soil and water conservation, which would favor the optimum use of agricultural land (land management through compost, cover crops, manures, minimum tillage, crop rotation).
关键词：land use; soil properties; horizons; agriculture; NE part of Romania
