Ecological Efficiency Evaluation And Influencing Factors Analysis Of Maize Production In Jilin Province

The ecological efficiency of agricultural production has always been one of the hot spots in the field of clean agricultural production and green planting in China.Jilin Province is a large agricultural province and an important commodity grain production base in China,with rich agricultural resources.However,in recent years,due to the non-standard operation of agricultural production,low resource utilization and other factors,there are some phenomena in farmland production,such as the increase of carbon dioxide emissions,the decrease of soil organic matter content and land consolidation,which is contrary to the sustainable requirements of agricultural economic development.In order to alleviate the negative impact of greenhouse gas emissions and ecotoxicity of farmland production on the environment and analyze the sources of the two,this paper constructs the ecological efficiency evaluation system of corn production to promote the development of ecological agriculture and green agriculture in Jilin Province.Based on the whole Life Cycle Assessment and the Sustainable Development Theory of agriculture,taking maize production as a breakthrough point.The carbon emission,ecotoxicity and economic value of maize production were included in the research framework of ecological efficiency of maize production.Based on the cross-sectional data in 2019,the ecological efficiency of maize production in 45 county-level administrative units in Jilin Province was evaluated.On this basis,the macro factors such as agricultural machinery density,agricultural scale level,industrial structure,location factors,agricultural economic development level and financial support level on corn ecological efficiency were analyzed,and policy suggestions were put forward.The main conclusions of this paper are as follows:(1)The excessive input of agricultural materials such as chemical fertilizer and pesticide is the main factor causing the heavy environmental load of maize production in Jilin Province;(2)The trend of ecological efficiency of maize production in Jilin Province is highly consistent with the three subsystems of carbon emission control efficiency,ecotoxicity control efficiency and economic efficiency,and the low coordination among subsystems is the key factor restricting the improvement of ecological efficiency of maize production in Jilin Province;(3)There are obvious differences in ecological efficiency among county-level administrative units and three regions,showing a pattern of “high in the East and West,low in the middle”;(4)The results showed that 42.2% of the county-level administrative units did not reach the optimal ideal mode of high economic and high environment;(5)The density of agricultural machinery and the level of agricultural scale have a positive impact on the improvement of ecological efficiency of corn production in Jilin Province,while the impact of industrial structure and location factors is negative,while the impact of agricultural economic development level and financial support level is not significant.