Suitable mechanized grain harvesting is the general direction of maize breeding.

This year's national corn new varieties core display site observation activities show

Suitable mechanized grain harvesting is the general direction of maize breeding.

The picture shows Dai Jingrui (left), academician of the Chinese Academy of Engineering and professor of China Agricultural University, and Chen Weicheng (right), professor of Henan Agricultural University, go deep into the corn field to check the growth of each variety.

Our reporter Wang Peng and Mo Zhichao

On September 8, 2016, the national new corn varieties core display site observation activities were held in Zhengzhou City, Henan Province. In order to promote the promotion of fine new varieties of grain crops, speed up the upgrading of leading varieties, and optimize the layout of varieties, the National Agricultural Technology extension Service Center, on the basis of continuing to do a good job in the public welfare display and demonstration of major crop varieties, select fine varieties of major grain crops such as corn, rice and wheat, and build a core display and demonstration platform for new varieties of major crops in the country in major grain producing areas such as the Northeast, Huang Huai Hai and the Yangtze River basin, this year took the lead in the Huang-Huai-Hai region to carry out the national corn core demonstration activities.

Dai Jingrui, academician of the Chinese Academy of Engineering and professor of China Agricultural University, Chen Weicheng, professor of Henan Agricultural University, Ding Xinkui, chief economist of Henan Provincial Department of Agriculture, Ma Yunliang, director of Henan Seed Management Station, and Ding Wanzhi, director of the Corn Professional Committee of the National Crop Variety Approval Committee; as well as well-known domestic corn experts, national corn product examination committee members, representatives of relevant provincial seed management stations, national Huang Huai Hai summer corn regional trial technicians, representatives of seed enterprises and breeding units, a total of 150 people; Visited Henan Ping An Seed Industry Co., Ltd.'s new corn variety demonstration base in Wen County and Henan Jinyuan Seed Industry Co., Ltd.' s scientific research base in Xingyang. "Weike 702", "NK718" and other 20 varieties to participate in the display.

"The display and demonstration of new crop varieties is the follow-up work of variety testing and approval. It is an important way to publicize and promote the promotion of new crop varieties and accelerate the transformation of agricultural scientific and technological achievements. It is a powerful starting point for agricultural technology extension." Zhang Yi, Director of the Regional Trial Division of the National Agricultural Technology Extension Service Center, said, "The national core display of new corn varieties integrates resources from all parties, relies on market forces, and uses a third-party perspective to publicize, recommend, and track and evaluate the national trial of various experimental channels. New varieties, increase the promotion and promotion of high-quality varieties, and promote the promotion and application of new varieties."

On the afternoon of September 8, the 2016 National Huanghuaihai Summer Maize Variety Experimental Training Conference was held. Experts and scholars from the front line of corn seed production research explained and reported some latest research results to the participants. Li Shaokun, a researcher at the Institute of Science and Technology of the Chinese Academy of Agricultural Sciences, analyzed the changes in corn planting density and yield in various regions of China in recent years, and compared with the corn planting situation in the United States, and put forward suggestions for high-yield corn planting.

Dai Jingrui evaluated the joint exhibition of new varieties and believed that these exhibitors had done a good job in variety research and development, especially in the suitability of machine harvesting and lodging resistance, which showed the strong scientific research strength of domestic corn seed production. Dai Jingrui said: "From the perspective of demand, machine harvesting of corn kernels is more advanced than any other production mode, which has been proved by corn production all over the world, machine harvesting can greatly improve the efficiency of large-scale corn production. Although it cannot be fully rolled out in the Huanghuaihai area in a short period of time, this is the future direction."

"In the future, corn breeding will focus on 'saving water, fertilizer and medicine, 'and pursue sustainable development of ecological and environmental protection." Zhao Jioran, director and researcher of the Maize Center of the Beijing Academy of Agricultural and Forestry Sciences, said in a report on corn engineering breeding, "In order to reduce labor costs, full mechanization will be one of the important directions. In addition, wide adaptation, multi-resistance and efficient use of resources are also important breeding directions, reducing the cost of agricultural inputs such as fertilizer, irrigation and plant protection, and improving market competitiveness by saving costs and improving quality and efficiency."

Chen Shaojiang, a professor at China Agricultural University, introduced maize haploid technology and reviewed the development history and application of haploid technology. He believed that haploid technology should be combined with engineering breeding to strengthen the maturity of technology. Chen Weicheng, a professor at Henan Agricultural University, reviewed the history of corn seed production in Henan Province and China, and suggested that multiple corn varieties should be subdivided, the core promotion area of each variety should be delineated, and the variety characteristics should be made.

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This year, the National Agricultural Technology Extension Service Center has set up 10 core exhibition sites in Henan, Shandong, Hebei, Anhui and Jiangsu provinces in the Huanghuaihai summer corn sowing area for regional joint display. The 20 varieties participating in the exhibition include corn varieties in Huanghuai summer sowing area approved by the state in recent years, some excellent varieties that entered the national production test in 2016 and excellent varieties examined by the province in recent three years, with "Zhengdan 958" as the control.

Exhibitor varieties: "Weike 702", the exhibitor is Henan Jinyuan Seed Industry Co., Ltd.; "Meiyu No. 5", the exhibitor is Henan Yuyu Seed Industry Co., Ltd.; "Shengrui 999", the exhibitor is Zhengzhou Shengruiyuan Agricultural Science and Technology Development Co., Ltd.; "Qiangsheng 369", the exhibitor is Shanxi Qiangsheng Seed Industry Co., Ltd.; "Huanong 138" Beijing Huanong Weiye Seed Technology Co., Ltd; "Dacheng 168", exhibitors are Henan Dacheng Seed Industry Co., Ltd.; "Nonghua 816", exhibitors are Beijing Golden Nonghua Seed Industry Technology Co., Ltd.; "slippery jade 168", exhibitors are Henan Huafeng Seed Industry Technology Co., Ltd.; "Weike 966", exhibitors are Henan Yijia Heye Technology Co., Ltd.; "Zhengdan 1002", exhibitors are Henan Qiule Seed Industry Technology Co., Ltd; "Yudan 606", exhibitors are Henan Zhenghan Seed Industry Technology Co., Ltd. and Henan Darun Agriculture Co., Ltd.; "Beijing Agricultural Science 728", exhibitors are Beijing Longyun Seed Industry Co., Ltd.; "J1483", exhibitors are Jinnuo Agricultural Science and Technology Park, Gaocheng District, Shijiazhuang City; "Yuanfeng YT008", exhibitors are Beijing Yutian Fengyuan Agricultural Science Research Institute; "Huaiyu 23", the exhibitor is Huaichuan Seed Industry Co., Ltd.; "Ningyu 468", the exhibitor is Jiangsu Jinhualong Seed Technology Co., Ltd.; "Hua Wan 617" ", the exhibitor is Anhui Longping High-tech Seed Industry Co., Ltd.;" NK718 ", the exhibitor is Hefei Fengle Seed Industry Co., Ltd.;" Lu Shan 9088 ", exhibitors are Tian Yiqing Group;" Liyu 88 ", the exhibitor is Shijiazhuang Liyu Technology Development Co., Ltd.