Research On The Application Of Soil Fertility Evaluation And Results Of Cultivated Land In Guzhen County

Cultivated land is the most basic resource for agricultural production, The cultivated land fertility of cultivated land quality, which is the productive capacity of cultivated land, is the comprehensive reflection of intrinsic.Farmland soil fertility quality directly affects the development of agricultural production.Land fertility evaluation is to use as the objective, evaluation of potential productivity of cultivated land and land suitability process, mainly explore the biological productivity and potential productivity, its essence is the identification of cultivated land productivity.Research on the evaluation and application of cultivated land fertility grade, is to improve the farmland and quality status, land use efficiency, promote the development of modern agriculture.In this study, through three years of formula fertilization by soil testing project The cultivated land fertility evaluation of Guzhen county,This paper collected related data of second soil survey, the soil fertility monitoring points, field test and demonstration and test results data, rural and agricultural production basic information and three years of project results etc.By processing current land use map, soil map, Soil Fertility Survey Point bitmap, using the Summary of software of soil testing data to establish database of the cultivated land fertility basic information.According to the productivity evaluation of cultivated land in Guzhen county and the truth, expert group determined the weights of evaluation factors and membership through the expert group of the soil and fertilizer, plant protection, agriculture. In the county land resources management information system, Guzhen county land management space and a membership function analysis model and hierarchical model are built.Evaluating by using analytic hierarchy process, using ArcGIS9.0 and MapGIS7.0 software as GIS spatial data processing tools, processing attribute data in application software Excel, Access data in statistics; in the current land use map for the evaluation unit, using fuzzy comprehensive evaluation method to evaluate the factor's membership degree, and then using the AHP to determine the weight of evaluation factor value, and then calculating the Comprehensive index of soil fertility of cultivated land with the way of addition,and the method is dividing soil fertility into levels by the curve method of the cumulative frequency, eventually Guzhen county land is divided into 4 grades, and generate the evaluation of cultivated land productivity grade map, wheat suitability evaluation result map, all kinds of soil nutrient map etc..The productivity evaluation results of the application in practical production, find out the cultivated land fertility and environmental quality in Guzhen county region and the different types of cultivated land soil fertility evolution and reasons for changes, guide the wheat planting structure adjustment, the soil nutrient status, build the basis for establishing and improving the long-term mechanism of formula fertilization by soil testing and enhance the quality of cultivated land. At the same, it is very meaningful to accurately grasp the production capacity of cultivated land suit one's measures to local conditions, strengthen the quality of cultivated land, guide the agricultural planting structure adjustment scientific and reasonable fertilization, and ensure food security in the future.