Sustainable Development About Ecological-economic System Of Agriculture Of Heilongjiang Reclamation Area

After60years of establishment of Heilongjiang reclamation areas, it has become a importantcommodity grain base and it contributed a lot for the national food safety and food safety.2011,the grain total output of Heilongjiang reclamation areas exceeded40billion kg. With thedevelopment of the Heilongjiang reclamation areas economic society, investment in agriculturalemergy increasing, the agricultural producting ability rising, along with the rapid consumption ofresources, and the degradation of agricultural ecological environment.The energy structure of agro-ecoeconomic system in Heilongjiang reclamation area wasinvestigated from a period of2002to2011based on various indexes such as: net energy yield ratio,environmental loading ratio, energy density, energy consumption per capita, the production costratio, the sustainability index and the system stability index and dominance index. The resultsindicated that at the study area, the indexes above are at higher level. A substantial investment inindustrial auxiliary energy, a continuous improvement of the agroecosystem. However, this raises adecline of the sustainability of the agricultural ecosystems. Moreover, the irrational establishedstructures and the low energy efficiency use issues need to be solved in the future development.Result reveals that: the total investment of Heilongjiang reclamation areas agro-ecoeconomicsystem rised from7.41×10²¹sej in2002to10.47×10²¹sej in2011, the uptrend of industrialassistant emergy is the most obvious one: from2.98×10²¹sej in2002to5.52×10²¹sej in2011, theratio rised from40.22%in2002to52.72%in2011. Non-renewable and renewable resourcesremained stable. The output of agricultural ecosystem rised from2.92×10²²sej in2002to8.53×10²²sej in2011. Emergy yield ratio（EYR） is decreasing; the pressures of agriculturalecological environment is rising; the intensity of agricultural emergy remaind stable; the emergyper capita is resing, the material standard of living improving; sustainability index is between4.89-4.59, agricultural production is in good stage. The exponentially of agroecological system isremained between0.59and0.65. The dominance index of agroecological system is between0.53-0.60, it shows that the farming and animal husbandry are dominant in agroecological system,and forestry and fisheries are supplement industry, and such structure is reasonable.The main theme of this paper is discussing how to promote the sustainable development of agricultural ecological economic of Heilongjiang reclamation areas. Through this paper, we canhave a conclusion that the level of sustainable development of Heilongjiang reclamation areasneeds to be improved. There are6problems need to be solved:（1） The sustainable development ofagricultural ecological system has been challenged by oil agriculture mode;（2） Plant industrystructure needs reformation, people should value quality more than usual;（3） Energy efficiencyrequires new technology （4） Water resources utilization structure is not reasonable, current modeneeds adjustment;（5）Driving force of leading enterprises of agricultural products is not strong （6）Restoring ecosystem function, and promoting agricultural functional diversity.