September 8th, the core of the New Maize Varieties in China in the field of demonstration activities held in Henan, Zhengzhou Province in 2016. In order to promote food crops new varieties promotion, accelerate leading products upgrading, optimizing the variety layout of national agricultural technology extension and service center in the main crop varieties continue to do public demonstration on the basis of selecting good varieties of main grain crops of corn, rice and wheat, in major grain producing areas in the northeast, the Yangtze River Basin and Huanghuaihai, build the main crops in the state of new varieties of core demonstration platform, this year first in Huanghuaihai region to carry out the national corn core demonstration activities.  
    China academician, Academy of engineering, China Agricultural University professor Dai Jingrui, Henan Agricultural University professor Chen Weicheng Ding Xinkui, chief economist of the Agriculture Department of Henan Province, Henan province seed management station of Ma Yunliang Ding Wanzhi, director of the Specialized Committee of maize National Crop Variety Approval Committee; and domestic well-known experts, the national corn corn Review Committee, the relevant provincial representatives, the national seed management station Huang Huai summer maize area test technicians, seed companies and breeding units on behalf of a total of 150 people visited the Henan Ping An; Seed Co. Ltd. in corn new variety demonstration base in Wenxian County and Henan Jinyuan Seed Co. Ltd. in Xingyang research base. “ Wei Ke 702”; “ NK718” 20 varieties to participate in the show.  
    “ new varieties of crops and demonstration is the follow-up work is the validation of the test varieties, publicity and promotion of crop varieties promotion, an important way to accelerate the transformation of agricultural science and technology, is a powerful starting point for the promotion of agricultural technology. ” the director Zhang Yi said that the National Agricultural Technology Extension and service center “ national new maize variety show core through the integration of all resources, relying on the market forces, as the third party perspective to publicity, recommendation and tracking evaluation of the test channel in the new varieties of fine varieties, increase the promotion efforts, to promote the popularization and application of new varieties. ”  
The afternoon of September 8th, Huang Huai held a 2016 National Summer Maize in varieties of experimental training, experts and scholars from the research line of corn seed to all the participants report on some of the latest research results. China Academy of Agricultural Sciences as a researcher Li Shaokun analysis in recent years the domestic maize planting density and yield changes, and corn cultivation compared with the United States, put forward for the planting of corn planting suggestions.  
Dai Jingrui of the new variety show joint were evaluated, that these enterprises to do well in the development of varieties, especially suitable for a breakthrough and lodging resistance in the machine, showing the strength of domestic corn seed research, Dai Jingrui said: “ from the demand point of view, corn grain harvest than any other advanced production mode, which has been the world's corn production proved that the machine can make the grain scale production of corn has greatly improved efficiency in a short period of time, although not in full swing in Huanghuaihai area, but this is the direction in the future. ”  
“ in the future, corn breeding will be ‘ water saving and fertilizer saving medicine ’ as the core, the pursuit of sustainable development of ecological environment. &rdquo, director of the Beijing Academy of agriculture and forestry; corn center researcher Zhao Jiuran in corn breeding project report said, “ in order to reduce labor costs, mechanization will be one of the important directions. In addition, wide adaptability, resistance and efficient use of resources is an important direction of breeding, reduce fertilizer, irrigation, crop protection and agricultural input costs, through high efficiency, improving quality and efficiency to enhance market competitiveness. ”  
China Agricultural University professor Chen Shaojiang introduced the haploid technology corn, reviews the development history and application of haploid technology, he believes in haploid technology and engineering breeding combined, strengthening technology. Chen Weicheng, a professor at Henan Agricultural University, reviewed the history of the development of maize seed production in Henan and China, and suggested that a variety of maize varieties should be subdivided, and the core promotion areas of various varieties should be designated to make the variety characteristics.