Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (6): 13-17.doi: 10.11924/j.issn.1000-6850.casb2022-0144

Special Issue: 生物技术 玉米

• Original article • Previous Articles     Next Articles

Intercropping of Different Maize Genotypes: Comprehensive Evaluation by DTOPSIS Method

YANG Haifeng1(), HONG Defeng1(), MA Junfeng1, WANG Qun2, WEI Xiaoyi1   

  1. 1 Xinxiang Academy of Agricultural Sciences, Xinxiang, Henan 453002
    2 Henan Agricultural University, Zhengzhou 450002
  • Received:2022-03-04 Revised:2022-06-15 Online:2023-02-25 Published:2023-02-22

Abstract:

In order to study the effect of intercropping of different maize genotypes, six maize varieties of different genotypes were used as experimental materials to set 3 combinations and 9 treatments. The monoculture and intercropping effect were analyzed comprehensively and compared by using DTOPSIS method (dynamic technique for order preference by similarity to ideal solution) based on entropy weight. Through exploring new methods of comparative analysis, a new dominant pattern of maize intercropping with different genotypes was obtained. The results showed that the Ci value of treatment 4 was the highest (C4=0.9829), and that of treatment 5 was the lowest (C5=0.0330). The Ci value of the other two combinations of intercropping were all greater than the Ci value of monoculture. The intercropping pattern of ‘DH605’ with ‘WK702’, and ‘DH618’ with ‘DH371’ had the effect of increasing yield and efficiency, which could be applied in production.

Key words: entropy, DTOPSIS method, maize, intercropping