Abstract:
【Objective】 In order to select the high-yield summer sowing soybean varieties suitable for planting promotion in southern Xinjiang, the agronomic traits closely related to the summer sowing soybean yield were excavated.
【Methods】 In 2021, the field comparison test of different replanted soybean varieties was conducted in Zepu County, Kashgar region, and the gray correlation analysis method was used to study the main agronomic traits and yield relationship of 23 summer soybean varieties.
【Results】 The highest yield of Jiyu 354 was 3,271.05 kg/hm
2, followed by Jiyu 260 at 3,154.35 kg/hm
2 and Jiyu 554 at 3,066.75 kg/hm
2. The correlation between soybean yield and major agronomic traits was ranked from large to small as:plant height (0.731)> 100 grain weight (0.714)> bottom pod height (0.699)> pod number (0.678)> Single seed number (0.669)> individual pod number (0.646)> stalk diameter (0.636)> individual seed weight (0.633)> planting density (0.625)> reproductive period (0.614)> main stem branch (0.611).
【Conclusion】 The summer sowing soybean varieties suitable for planting in southern Xinjiang are Jiyu 354、Jiyu 260 and Jiyu 554, the agronomic traits closely related to the yield of summer sowing soybean in Xinjiang are mainly plant height and hundred grain weight.