为筛选适宜玉米、大豆带状复合种植模式推广使用的大豆品种,本试验采用“4+4种植模式”（4行玉米+4行大豆）,设5个处理3次重复,分别为T₁（宁豆6号）、T₂（中黄318）、T₃（承豆6号）、T₄（铁丰31）和T₅（辽豆15号）,玉米品种均为先玉1225,对比分析各处理大豆的生育期、农艺性状、产量及经济效益等。结果表明,各处理大豆生育期在143~145 d,株高、底荚高等农艺性状以T₄处理表现最好;单株豆粒数以T₄和T₂处理较多,分别为49.36、48.55粒,产量以T₄处理最高（1 384.65 kg/hm²）,T₂处理次之（1 296.60 kg/hm²）;经济效益与产量变化趋势一致,以T₄处理最高。综合各品种表现,筛选出大豆品种铁丰31适合在研究区作为玉米、大豆带状复合种植模式中的优质大豆品种推广种植。

In order to screen suitable soybean varieties for the promotion of corn and soybean strip composite planting model, this experiment adopted a “4+4 planting model” (4 rows of corn+4 rows of soybean), with 5 treatments repeated 3 times, namely T₁ (Ningdou No. 6), T₂ (Zhonghuang 318), T₃ (Chengdou No. 6), T₄ (Tiefeng 31), and T₅ (Liaodou No. 15). The corn variety was Xianyu 1225, and the growth period, agronomic traits, yield, and economic benefits of each treatment of soybean were compared and analyzed. The results showed that the soybean growth period of each treatment was between 143 and 145 days, and the T₄ treatment performed the best in agronomic traits such as plant height and bottom pod height. The number of beans per plant was higher in T₄ and T₂ treatments, with 49.36 and 48.55 seeds respectively. The highest yield was observed in T₄ treatment (1 384.65 kg/hm²), followed by T₂ treatment (1 296.60 kg/hm²). The trend of economic benefits and yield changes was consistent, with T₄ treatment being the highest. Based on the performance of various varieties, the soybean variety Tiefeng 31 was selected as a high-quality soybean variety suitable for promotion and planting in the study area as a belt shaped composite planting model for corn and soybean.