Evaluation On The Grades Of Cultivated Land Quality In Jiguan District,Jixi

The people live on food,and arable land is an important guarantee for food production and the material basis for human survival.Now,With the rapid growth of the population.cultivated land has become a highly scarce resource.Especially in recent years,as Jiguan district gradually accelerates its urbanization process,A large number of high-quality arable land resources are occupied,and the quality of arable land has been declining year by year.Through the scientific evaluation of the grade of cultivated land,we can understand the change of grade of cultivated land quality in time,and lay the foundation for the scientific allocation of cultivated land resources,the improvement of resource utilization rate and the sustainable development of agriculture.Based on GIS,this research extracts data about land utilization as well as data about soil and water conservancy in 2012,2014 and 2016,to measure the quality of cultivated land,and summaries the characteristics of the distribution of the grades in Jiguan district.The main conclusions of this paper are as follow.(1)By comparing the natural,utilized and economic differences of farmland quality in2012,2014 and 2016,quality distribution of cultivated land remains unchanged..The area of cropland is divided into 10,11 and 12 natural divisions,10,11 and 12 national divisions,and 10,11 and 12 national divisions.The proportion of arable land is mainly 12,11,and at least 10.The natural quality,utilization and economic level of cultivated land in the chicken crown area are relatively low and medium,which indicates that the natural condition of the cultivated land in the area of chicken canopy is relatively poor,the economic conditions and utilization conditions of cultivated land are relatively poor.The construction of farmland quality in this area needs to be further improved.(2)Judging from the amount of arable land,the amount of arable land in the Jiguan area showed a downward trend from 2012 to 2016,and it failed to achieve a management mechanism that balanced the quantity and quality of arable land.(3)It can be seen from the analysis results of different land types of land quality that the majority of farmland is dry land.The nature of irrigated land and paddy fields,and the use of etc.Mainly concentrated in 11,higher than drylands.However,due to the poor economic conditions and the poor level of operation in the area,the economy of drylands,paddy fields and irrigated land is mainly concentrated in 12 areas.(4)By comparing the quality,utilization and economic situation of arable land inHongxing and Xijiao,it is shown that the proportion of arable land in districts 10 and 11 is much higher than that in the area of Xijiao,and the proportion of arable land in the 12 th district is basically the same..Hongxing township is close to the urban area,and its economic conditions and management level are higher than that of the western countryside.It can be seen that the grade of the cultivated land near the urban area is higher than that of the remote area,and the grade of the cultivated land presents the characteristics of regional distribution.In view of these problems,we should first do a good job in urban land use planning to fundamentally control the reduction of existing arable land,actively increase the arable land area and achieve the goal of dynamic balance of arable land.Then the infrastructure of farmland should be strengthened and soil fertility should be improved through multiple channels so as to improve the quality of farmland.From the user's point of view,education farmer scientific fertilizer,formula fertilization,land and land should be combined.