Adaptation to Climate of Corn Planting in Northeast China

A comprehensive understanding of the adaptability of maize to the climate of the planting area at the regional scale is helpful for the selection and promotion of maize varieties according to local conditions, matching the variety characteristics with the regional light and heat resources, tapping the production potential of maize varieties, and maximizing the use of light and heat Resources, reduce the impact of adverse weather conditions, and increase the yield and total yield of corn in Northeast China. Methods In this study, the Zhengdan 958 variety with strong versatility was used as the test material, and the local main planted variety was used as the control. 28 experimental sites were arranged in the range of 40°-48° north latitude during 2007-2009 to carry out multi-site networking and collaboration for many years. The experiment, combined with the meteorological data over the years, analyzed the yield performance, increase potential, growth process and accumulated temperature demand characteristics of Zhengdan 958 in the northeast region. Based on the meteorological data of the northeast region in the past 20 years, the method of geographic information spatial analysis was used to analyze the northeast region. The maturity planting zoning of maize varieties is carried out in order to provide a theoretical and practical basis for the rational layout and promotion of varieties in the spring-sown maize area in Northeast China.


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