Breeding,comprehensive analysis and high-yield cultivation techniques of new maize variety Yundan 25

doi:10.14088/j.cnki.issn0439-8114.2023.01.002

Abstract

Abstract: The breeding process and characteristics of a new maize（Zea mays L.） variety Yundan 25 were briefly introduced. Based on the results of the regional trial and production trial of maize varieties from 2019 to 2020 in Hubei Province, the performance of productivity, stability and adaptability of Yundan 25 in the mountain area of Hubei Province were analyzed by testing the average yield, yield variation coefficient, high yield effect value, high stability coefficient,adaptability parameter,and regression coefficient of yield and environmental index. The results showed that Yundan 25 was a new maize variety with a higher yield, stronger stability,wider adaptability, and suitable for spreading planting in mountainous areas of Hubei Province and other corresponding ecological areas. In addition, the effects of different fertilizer amount（A） and planting densities（B） on yield and main agronomic traits of maize variety Yundan 25 were studied by using two-factor split plot design. The results showed that the best cultivation mode of Yundan 25 was density of 55 000 plants/hm², 750.0 kg/hm² compound fertilizer as base fertilizer, 337.5 kg/hm² urea as topdressing （seedling fertilizer ∶ ear fertilizer = 1∶2）, and the average yield was the highest, reaching 15 670 kg/hm².

Key words: maize（Zea mays L.）, Yundan 25, breeding, comprehensive analysis, cultivation technique

CLC Number:

S513

YU Chang-ping, ZHOU Hua-ping, YE Qing-song, WU Cheng-guo, XIAO Neng-wu, QIN Guang-ming, LI Yong-xue, WANG Zhi-yun, CHEN Qiang, LIU Yong-zhong. Breeding,comprehensive analysis and high-yield cultivation techniques of new maize variety Yundan 25[J]. HUBEI AGRICULTURAL SCIENCES, 2023, 62(1): 6-11.

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