Evaluation Of Intensive Use Of Cultivated Land In Huachuan County

As the most basic element of human survival and development,land is the necessary carrier and physical space for human activities and plays an essential and important role in human survival and reproduction as well as social prosperity and development.At present our country has entered a rapid development of urbanization,urban scale has expanded in the new period,under the opportunities and challenges,a large number of urban development choice by cultivated land to expand the non-agricultural construction land,in order to enhance regional GDP,and the serious problem of "much less" continue to intensify contradiction between human and land,arable land,although temporarily keep dynamic balance,but a serious shortage of reserve cultivated land reserves,difficult to development and utilization of the land area is more,it also poses a threat to our country’s food security.Hope that through this article,therefore,on the degree of cultivated land intensive utilization birch chuan county,from the angles of time,space,through the cultivated land into strength,cultivated land utilization degree,the condition of cultivated land output efficiency,continuous research of four angles,such as understanding to the cultivated land use status quo,finally realize high efficiency comprehensive intensive utilization of cultivated land,to optimize the intensive utilization of cultivated land resources,promote efficient use of cultivated land and agricultural production mode from extensive management to intensive coordination development mode change.Birch county of sichuan as China’s important commodity grain production base,"two great plains" modern agriculture in heilongjiang province comprehensive reform first try soil in key areas,key county of irrigation and water conservancy and protect pioneer,more should pay attention to the cultivated land intensive utilization,through the development of science and technology,increase in agricultural production,adjust the production time space structure,make the land potential,the unit area of land to produce a to maximize economic benefits.Therefore,it is not only a necessary step for the agricultural development of huachuan county to improve the degree of intensive utilization of cultivated land,but also a problem that must be seriously studied in the process of agricultural modernization of huachuan county in the future.Based on nine birch chuan county township as the research object,from the Angle of the relationship of person and on the basis of integrity,the principle of scientific nature and operability,and regional and targeted,including fertilizer inputs,per capita arable land,irrigation index,14 indexes such as multiple cropping index to construct the evaluation index system,by analytic hierarchy process(ahp)and entropy value method to calculate the weights of each indexrespectively,and finally through the optimal combination of empowerment method to determine the index weight,combined with GIS spatial analysis technology and the related statistical software,quantitative and qualitative analysis of the birch chuan county in time and space of cultivated land intensive utilization degree and its change rule,According to the results of systematic analysis,and combined with the principal component analysis analysis of the factors affecting the intensive use of arable land,finally in order to improve the degree of intensive use of arable land in huachuan county put forward systematic and scientific Suggestions and countermeasures.The research results show that:(1)From the time change characteristics,from 2009 to 2017,the cultivated land intensive use degree in huachuan county has been in a steady rising trend,the rising trend is relatively stable,and the cultivated land sustainable status is relatively stable.During the period of 2016-2017,the input intensity of cultivated land had a higher rising trend from the previous year,but the utilization degree decreased from the previous year,and the continuous condition of cultivated land also declined.(2)From the perspective of spatial variation characteristics,the intensive use of cultivated land in huachuan county is relatively stable,but there are still differences among kongjia in some areas.Due to the limitation of topographic features,the intensive use of cultivated land in the towns and villages in the southwest is relatively low.The cultivated land intensive utilization degree is high in the central region.In northeast China,the difference of farmland input intensity leads to the difference of grain yield,which leads to the difference of farmland intensive utilization degree.(3)According to the problems existing in the intensive use of cultivated land in huachuan county,in order to further increase the agricultural output in huachuan county,the agricultural input intensity should be appropriately increased to increase the output per unit area of cultivated land;Strengthen the consciousness of cultivated land protection,strengthen the degree of intensive use of cultivated land;Adjusting and optimizing the structure of agricultural production to improve the quality of cultivated land;Strengthening scientific and technological research and promoting the development of modern agriculture;We will improve the intensive use of arable land by focusing on ecological balance and promoting sustainable agricultural development.