%0 Journal Article %A LI Shuyan %A WANG Yanpo %A XING Ranran %A WANG Dingjie %A REN Liwei %A LIU Tianxue %T Comprehensive Evaluation of High Yield and High Efficiency of Summer Maize Varieties in Southern Huanghuai Plain#br#
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%D 2021 %R %J Journal of Arid Meteorology %P 130-137 %V 39 %N 1 %X The 40 summer maize varieties passing the certification were selected, variety comparison field trials were carried out at Xunxian located in northern Henan, Xuchang located in central Henan, and Fangcheng located in southern Henan. The high-yield and high-efficiency comprehensive evaluation index of summer maize varieties was constructed to carry out a comprehensive evaluation of the adaptability of summer maize varieties in three ecological regions from aspects of high and stable yield and climate resource utilization efficiency. The results show that the full growth period length of summer maize varieties was shortest at Fangcheng, with an average value of 108 days, and it was longest at Xunxian, with an average value of 111 days. The difference of the full growth period length of summer maize varieties ranged from 12 to 16 days in three ecological regions, and the full growth period length was correlated significantly with the flowering and grain period. The average yield of summer maize varieties at Fancheng was highest, while it was lowest at Xuchang, and yield difference between two ecological regions passed the 0.05 significance test. The highest utilization rates of light, temperature, water were at Fangcheng. The light and temperature utilization rate was higher at Xunxian than at Xuchang, but the water use efficiency was lowest at Xunxian. According to the ranking of high-yield and high-efficiency evaluation comprehensive index of summer maize varieties, 11 high-yield and high-efficiency summer maize varieties were selected including Weike 702, Qingyu 9, Xindan 68, Denghai 605, Dafeng 30, Zhengdan 1002, Fengdecunyu 10, Jundan 29, Zhengdan 538, Huaichuan 39 and SK1098.
%U http://www.ghqx.org.cn/EN/abstract/article_10238.shtml