Comprehensive Analysis And Evaluation Of Maize Production System And Typical Planting Mode In Jilin Province

this study carried out a systematic study on the development of maize and its efficient production methods in Jilin Province.Based on the 2000-2020 National Statistical Yearbook and Jilin Statistical Yearbook and other data,the changes of maize production in Jilin Province in planting area,yield and total yield at the time and space level,and its comparative analysis and comparative advantage analysis with other major maize-producing provinces in Northeast China,combined with the comprehensive benefit evaluation of typical cultivation modes of Antu,Songyuan and Dehui,put forward the production suggestions for efficient and sustainable development of maize.The main conclusions are as follows:(1)From 2000 to 2020,although there were fluctuations,the total corn output in Jilin Province showed a continuous increase trend.From 9.37% to 11.41% of the country.Its importance to China’ s corn supply in Northeast China is second only to Heilongjiang Province.The sown area changed similarly,with Jilin Province accounting for 9.53% of the national sown area increasing from 9.53% in 2000 to 10.39% in 2020.The yield of maize in Jilin Province has shown obvious changes,and in the past 20 years,the highest yield is now 8.86 tons/ha in 2008,and the average yield for many years is 7.34 tons/ha.At the same time,the yield of corn in Jilin Province has been higher than the national average in recent years,and the yield change in Northeast China is more stable than that in Northeast China.From the changes in corn production in Jilin Province,in the past 20 years,Changchun and Songyuan have shown a good momentum of development,which has played an important role in promoting the development of corn in the province(2)Based on the results of comparative advantage analysis,the comparative advantage index of corn production scale in Jilin Province has fluctuated around 1.57∽3.00 in recent years,and the multi-year average value is 2.82,which is second only to Heilongjiang Province among the main corn producing provinces in China.The maize efficiency comparative advantage index of Jilin Province fluctuated between 1.16∽1.32,and the multi-year average was 1.27,ranking the highest among all major maize growing provinces.From the perspective of the change in the ranking of the efficiency index,Jilin Province has been in the leading position in the country for a long time since 20 1 2.From the perspective of comprehensive comparative advantage index,corn production in Jilin Province is between 1.77∽3.40,with a multi-year average of 3.17,second only to Heilongjiang Province.In general,the scale and efficiency of corn production in Jilin Province are outstanding.(3)The comprehensive benefits of typical maize cultivation modes in different ecological regions were compared: the combination of "Dade 216 + row spacing 125 — 130 cm ridge +bottom fertilizer seed fertilizer + ordinary transparent mulch film" was used in the Antu area;In the Dehui area,the combination of "Fumin 985 + no-tillage + plant density 5000+ balanced fertilization" was adopted;In the Songyuan area,the combination of "Deca 159 + straw return +efficient utilization of water and fertilizer + comprehensive control of pests,insects and weeds +whole process mechanization" was adopted,which can effectively improve the yield,economic benefits and ecological effects of maize compared with the farmer model,and show good sustainability.