Study On Quality Evaluation Of Agricultural Land In Markit County

As one of the most important carriers of surface grain and agricultural production,agricultural land is closely related to human life.In order to realize the demand of systematically understanding and scientifically quantifying the quality of agricultural land,it is urgent to evaluate the quality of agricultural land.Based on the full investigation of the relevant data of this study,this paper uses the fuzzy comprehensive evaluation system,land grading evaluation system and yield evaluation system to delimit the grade of agricultural land,and makes qualitative and quantitative analysis of the agricultural land in Markit County.(1)The fuzzy comprehensive evaluation method is used to analyze the quality of agricultural land in the research area,through the data analysis of the survey in 2019,the results show that the overall level of agricultural land in four towns is in the"better"level.Among them,Xiyitidun Township is in the"good"level because of its advantages in location factors and traffic conditions compared with the other three towns.Kumukusar Township,Kizilawati Township and Kurma Township are in the"better"level,and the quality of agricultural land in the research area is generally high.(2)The quality of agricultural land in the study area was analyzed by land grading method,the grading index was calculated and verified by mathematical analysis method.The agricultural land quality was divided into grade I,grade II,grade III and grade IV,with a total grading area of 42255.56 hm².The area of grade I was 9262.19 hm²,accounting for 21.92%of the total grading area;92 hm²,accounting for 24.60%of the total grading area;7 hm²,accounting for 25.50%of the total grading area;The area of grade IV is 11821.75 hm²,accounting for 27.98%of the total grading area.(3)Based on the statistical announcement data and field investigation of the study area,the data were sorted out and analyzed,and the matrix synthesis operation was carried out according to the planting area coefficient ratio to analyze the quality of agricultural land in the study area.The results show that the quality of agricultural land in Xiyitidun Township is in the"good"level and that of Kumukusar Township is in the"better"level,Kurma Township is at the"general"level,while Kizilawati Township is at the"poor"level.The modified model is Y=38.274+0.002X₄,R²=0.803.After verification,it shows that the change of crop yield in Markit County can be explained by fertilizer application to a large extent.(4)On the whole,the spatial distribution of agricultural land in the four towns of Markit County presents a similar law,and all of them disperse outward in the center of the town.Grade I land is distributed around cities and towns,grade II land is around grade I land,grade III land is around grade II land,and grade IV land is distributed in the periphery.