Evaluation On The Farmland Quality Of Agricultural And Pastoral Land In The North Of Songnen Plain

The farmland is an important natural resource for human survival. Existing arable land in China was121million hectares per capita arable land0.08hm2accounted for only1/4of the world’s arable land per capita farmland reserve resources are seriously inadequate, must be effectively guaranteed land, especially farmland the quantity and quality. On the amount of cultivated land to expand the possibility of not only improve the quality of farmland in order to ensure our food security. Quality of arable land on the country’s food security and its significance, good or bad quality of arable land relates to the crop production system capacity for sustainable development, its research and evaluation has been the focus of the study at home and abroad. Soil fertility of farmland refers to arable land as fertile as is determined by a combination of factors of arable land topograpHy, soil pHysical and chemical properties, site conditions and climatic conditions. Evaluation of Farmland Quality is the basis of assessment of land quality content, that is, the evaluation of the productivity of arable land cultivated soil topograpHy, geomorpHology, soil parent material, farmland infrastructure and fertility levels, soil pHysical and chemical traits and other factors constitute, can reveal the level of farmland potential biological productivity. Farmland assessment is still in its infancy, many methods for reference in the evaluation of land, has made considerable progress in recent years, soil fertility quality assessment method in a wide range of applications of GIS technology. GIS and Evaluation of Farmland method combining analysis of the spatial and temporal variations of farmland soil fertility and soil fertility factor, to grasp the number, quality and distribution of arable land resources, to provide information on reserve for the land survey in China for the rational use of farmland, and effectively protect and enhance farmland fertility has important practical significance. Played a very important role for the scientific and rational use and management of land resources, and promote the development of China’s agricultural industry and stable economic growth.Songnen Plain in northern pastoral compound area of good-quality rice is an important producer, is the main maize production base in HeiLongjiang Province, is an important national commodity grain production base, is also a valuable hard-to-renewable natural resources. In recent years, great importance to the cultivation of contempt aquaculture farming methods in the region of land degradation, agricultural production of high input, high-yield pHenomenon masked the decline of farmland basis to reduce production capacity of farmers’effective reality.2nd since the soil survey self the early1979, basically there is no cultivated land quality system evaluation on the quality of arable land status and spatial distribution pattern of no accurate quantitative knowledge and understanding, it is difficult to develop effective farmland production capacity of specific strategies and techniques. Therefore, Songnen Plain in northern pastoral compound of cultivated land quality research and evaluation is necessary to ensure national food security.In this paper, the use of GIS technology, AHP and fuzzy evaluation method based on combined with DELPH model recombination region of the in northern pastoral Songnen Plain Farmland Quality Evaluation and the results of classification, the eventual integration of the evaluation results and economic conditions on the local agricultural industry structure, farmland soil improvement put forward reasonable proposals. Farmland Quality Evaluation System to establish a scientific of farmland monitoring and evaluation, to better ensure national food security, stabilizing the regional economy for the development of ecological sustainable development planning for to provide a scientific basis.