Comparative experiment on introduction of summer soybean varieties in Yiyang City
To select soybean varieties suitable for Yiyang City and areas with similar ecological conditions with stable-yield,high-yield and good adaptability.With Zhongdou 41 as the control,11 varieties,including Zhongdou 43 and Nannong 57,were introduced and compared in Heshan District and Taojiang County,from the aspects of growth period,agronomic traits,main economic traits,and yield.The results showed that the growth period of 12 varieties in the two experiments was 86-100 days.In terms of agronomic traits,the plant height was 62.6-83.0 cm,the bottom pod height was 12.5-21.3 cm,the number of main stem segments was 10.0-16.3,and the effective branches were 0.7-3.3.In terms of economic traits,the effective pod number per plant was 33.7-45.3,the kernel number per plant was 61.7-91.5,the kernel weight per plant was 15.3-23.0 g,the hundred kernel weight was 20.1-23.6 g,and the complete grain rate was 90%-96%.The average yield of 12 varieties was 2 100.0-2 398.5 kg/hm2,and the average yield of 11 introduced varieties were higher than that of the control.The growth period,agronomic traits and economic traits of Wandou 37 and Jidou 1258 were 1-2 days shorter than that of the control varieties.The economic traits such as effective pod number per plant and grain number per plant were higher than or close to that of the control varieties.The whole grain rate was above 90%,and the average yield was higher.The yield of Heshan test site was 2 398.5 kg/hm2 and 2 322.0 kg/hm2,respectively.The yield of Taojiang test site was 2 398.5 and 2 277.0 kg/hm2,respectively.The Wandou 37 and Jidou 1258 varieties have moderate growth periods,good agronomic and economic characteristics,and good yield performance,and are more suitable for planting demonstration and popularization in Yiyang City.
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