Black soil of cultivated land resource is scarce resources in the world,and its properties is good,high fertility,very suitable for the growth of plants.Black soil area in Heilongjiang province,however,due to the unreasonable utilization for a long time,development and management,the output light,heavy use of fertilizer,degenerate cultivated land resources is sharply,resulting in land productivity and utilization of falling,the "northeast granary" and even the national food security threat.Therefore,an urgent need to curb the trend of cultivated land degradation of black soil,give full play to the black soil of cultivated land resource advantage,stable black soil area at the total grain output,ensure that important position as a national commodity grain production base in Jilin province,set up to adapt to the sustainable development of black soil area at the benign ecological environment,form the new pattern of regional economic development.This paper adopted the combination of normative analysis and empirical analysis,combining qualitative analysis with quantitative analysis,static analysis and dynamic analysis and the combination of the methods of comparative analysis and the investigation and analysis,get the preliminary results are as follows:1,summarize the basic theory of the black soil of cultivated land protection.Through the definition of black soil and black soil zone and black soil,soil formation and classification of systematic analysis of the black soil of cultivated land resource attribute,connotation,status and role of black soil farmland protection,on the basis of the analysis and study the basic theory of black soil of arable land resources protection.2,analysis of Jilin black soil of cultivated land resource utilization situation and existing problems,reasons and harm.At present the problems existing in the black soil of arable land use mainly are: soil erosion is serious,thin soil layer;Soil fertility decline,the quality of cultivated land degradation;Black soil physical and chemical characters and deteriorating;The decrease in the number of black soil of arable land;The ecological environment deterioration,frequent disasters;The middle-and-low-yielding fields expand area.These problems mainly by the natural factors such as climate,soil,terrain and excessive reclamation,such as soil pollution caused by human factors.Degenerate farmland resource types and harm of main performance is: gap increased physical degradation caused by lower productivity,such as the chemical degradation such as nutrient balance disorders cause and low grain yield,low organic matter content of biological degradation resulting in decreased efficiency of agricultural production,the disorderly mess in cultivated land permanent degradation.3,put forward the basic principles of Jilin black soil farmland protection,countermeasures and concrete measures.With sustainable development as the basic principles to guide the black soil of arable land protection countermeasures: accelerate the legislative process,the black earth protection engineering;Strengthening agricultural development planning,protect the black soil of arable land resources;Improve the ecological environment,developing green agriculture;Change the mode of operation,to strengthen the construction of basic farmland;Black soil land compensation mechanism,integration management;Further implement the rural economic policies,giving play to the role of soil in farmers fertilizer.And further put forward "two half astern,two for two" biological measures,such as "the ridge to the zone field,deep loosening rotation" agricultural measures,such as grass protection of build by laying bricks or stones,field engineering measures such as comprehensive treatment.Through the above analysis for the black soil of arable land resources protection,agricultural sustainable development and national food security strategy to provide theoretical basis and scientific countermeasures. |