Study On Cultivated Land Quality Evaluation And Its Improvement In Mingshui County

Cultivated land is the basic resource and condition for human survival.The quality of cultivated land has a direct impact on the quantity and quality of the production of food crops and is an important material guarantee for ensuring agricultural development and food security.The quality of cultivated land,the area of cultivated land and the spatial distribution of cultivated land quality can be clearly understood about the quality of cultivated land.It is of great significance to the national food security and the sustainable development of agriculture.In this paper,the present situation of cultivated land quality in Suixi City of Heilongjiang Province is taken as an example,and the evaluation index system of cultivated land quality is selected reasonably.Based on the field sampling of Sanshui County,the analysis of remote sensing image and the spatial analysis of Arc GIS data,The weight of cultivated land in Mingshui County was studied by using the optimal combination weighting method.The division and evaluation of cultivated land quality under the influence of different evaluation factors were analyzed,and the spatial distribution of cultivated land in different quality was analyzed.Through the calculation of the potential index of cultivated land quality improvement,the main factors of the evaluation factors are the overall factors of the evaluation factors,the factors of the secondary factors are divided into the area of cultivated land and the quality of cultivated land,and the quality of cultivated land is improved in different areas Put forward targeted methods and countermeasures.Through the study of this paper,the following conclusions are obtained: the area of high quality cultivated land in Mingshui County is 22705.948 hectares,accounting for 14.71% of the total area of cultivated land in Mingshui County,and the largest area of cultivated land in Yongxing has reached 53570.767 hectares The total area of ultivated land and low quality cultivated land is 21863.364 hectares and 40808.718 hectares,accounting for 14.16% and 26.43% of the total cultivated land respectively.In Chongde Town,the total area of cultivated land and low quality cultivated land are 21863.364 hectares and 40808.718 hectares respectively And the largest distribution of Tongda Town;and low-quality cultivated land area is the smallest of all categories,an area of 15456.168 hectares,accounting for 10.01% of the total area,the most distributed in the prosperity of the township.It can be seen that the area of cultivated land with high quality in Mingshui County is relatively large,and the area of low quality cultivated land is the smallest,which indicates that the quality of cultivated land in Mingshui County is on the middle level.Mingshui County,through the 10 kinds of leading factors for all factors arranged in a combination of a total of 15 kinds of dominant factors combination type,and ultimately divided into six cultivated land quality promotion area.Mingshui County through the 10 kinds of leading factors for all factors arranged in a combination of a total of 19 kinds of dominant factors combination type.The final division of seven cultivated land to be upgraded area.The dominant factors of 6 key cultivated land quality improvement areas in Mingshui County were organic matter content,depth of obstacle layer,soil p H degree and slope degree.The dominant factors of 7 cultivated land area were available phosphorus content,organic matter content,total nitrogen,black soil Layer thickness,barrier depth,soil p H and surface soil texture.It is proposed to strengthen the establishment of a regular evaluation system for cultivated land quality,to actively carry out land consolidation work,to speed up the promotion of land leveling projects,to strengthen the use of organic fertilizers,to rationally rotate the use of organic fertilizers and to improve the quality of cultivated land,,The promotion of straw to the field;the development of new science and technology agriculture;to improve the concept of the release of chemical fertilizers,according to different soil application of different fertilizers.Deep plowing deep to improve the quality of cultivated land,the use of soil improvement method to increase the thickness of black soil layer;through soil improver to improve soil p H.