Study On Classification And Quality Improvement Of Cultivated Land Classification In Heilongjiang Province

Cultivated land is the cornerstone of human survival and development,an important resource related to the national economy and people's livelihood,and the fundamental guarantee for national food security.At this stage,we must adhere to strict farmland protection systems and give priority to protecting cultivated land resources.Heilongjiang is a large grain province in China.To ensure food security,the improvement of cultivated land quality is particularly important.This paper uses literature analysis,qualitative and quantitative analysis,and GIS comparative analysis to study the quality of cultivated land in Heilongjiang Province.Based on the analysis of the factors such as the analysis of the factors and the analysis of the cultivated land,the paper classifies the factors and analyzes the limiting factors,and uses the comprehensive analysis and layer superposition method to improve the quality of cultivated land at the provincial and secondary levels.The zoning study has the following conclusions:(1)This paper sorts out the factors,weights and integral rules of cultivated land classification in Heilongjiang Province,and analyzes the quality of cultivated land in 2015-2017: Heilongjiang Province,etc.in 2015-2017,etc.The economy is mainly concentrated in 11-13.Etc.The quality of cultivated land is generally low.The temperature in the Daxing'anling Mountain area is low,the accumulated temperature is small,and the cultivated land is not in the 11-15,etc.,which belongs to the low-value area of cultivated land;the Changbai Mountain area of the Sanjiang Plain is flat and mechanized,and the other is 10-14;the Songnen Plain is flat.The soil conditions are good and the accumulated temperature is high.The cultivated land and so on cover 7-13,etc.,which is the high value area of cultivated land quality in the whole province.(2)Grading and grading the factors of Heilongjiang Province,and obtaining the classification maps of 8 factors,the analysis shows that the limiting factors of provincial cultivated land quality are surface soil texture,black soil layer thickness,drainage conditions,and obstacle interval..The limiting factors of the large and small Xing'an Mountains in the second-level area of Heilongjiang Province are black soil thickness,surface soil texture,topographic slope,and obstacle interval.The limiting factors of Changbai Mountain in Sanjiang Plain are organic matter content,surface soil texture,topographic slope,and obstacles.Layer depth of the surface.The limiting factors in the Songnen Plain are the thickness of the black soil layer,the drainage conditions,and the degree of salinization,and propose adjustment measures for grading factors(3)On the basis of the research of this article and the predecessors,the arable land quality improvement zone is carried out.The first is the quality-enhanced sub-division at the provincial level.The grading of the cultivated land quality is improved by four factors in the analysis of the limiting factors;the second is the upgrading of the quality of cultivated land in the secondary area.Obtain a partition map of the two methods of the figure.The zoning system is a rational use area,a priority remediation area,and a key remediation area.The two methods are comparatively analyzed.The method 1 is more effective in cultivating land quality on the provincial scale after classification by grading factors.The province's unified standards and accurate identification are important.The limiting factors and accurate division of key remediation areas are more conducive to improving the quality of cultivated land.(4)Proposing the quality of cultivated land: Effectively protect the black land,increase agricultural financial support and protection awareness,reduce agricultural pollution to protect the environment,carry out the transformation of low-and medium-yield fields,strengthen the infrastructure construction of farmland,vigorously implement land remediation,effectively protect cultivated land resources and improve the quality of cultivated land.It has a good reference for protecting cultivated land and improving the quality of cultivated land in the future.