在兰州市皋兰县城关镇明星村(海拔1 754 m)、榆中县城关镇李家庄(海拔1 879 m)和永登县柳树镇柳树村 (海拔2 032 m)不同海拔条件下，以玉米/大豆带状复合种植模式为研究对象，3个紧凑型玉米品种(巡天1102、金穗3号和龙源3号)和6个熟期接近的大豆品种(系)(冀豆17、中黄30、齐黄36、陇黄2号、晋豆19和XD2015-6)为试验材料，采用单因素随机区组设计，筛选兰州市不同海拔条件下适宜于机械化作业的玉米、大豆间作品种，以期提高生产效率和经济效益。试验结果表明，因生育特性的差异，各品种农艺性状及产量在不同海拔条件下不同，间作玉米品种金穗3号在皋兰、榆中和永登表现均最好，产量平均分别为12 561.8 kg/hm2、11 954.3 kg/hm2和11 011.8 kg/hm2，间作大豆品种晋豆19在皋兰和榆中产量最高，分别为1 941.7 kg/hm2和1 691.7 kg/hm2；中黄30和XD2015-6在较高海拔的永登县则表现较好，产量分别是1 523.1、1 505.2 kg/hm2。综合考虑玉米、大豆适宜机械收获的农艺指标及产值和效益，建议在该区域选用玉米品种金穗3号和大豆品种中黄30或XD2015-6间作组合较好。

Under corn /soybean intercropping system, using 3 compact-type corn cultivars (Xuntian 1102， Jinsui 3 and Longyuan 3)， and 6 soybean cultivars(Jidou 17， Zhonghuang 30， Qihuang 36， Longhuang 2， Jindou 19 and XD2015-6)， single radom-plot design is conducted to screen suitable corn and soybean cultivars for corn /soybean intercropping system in different altitudes in Lanzhou city. The result indicates that the yield of Jinsui 3 in Gaolan， Yuzhong and Yongdeng are higher than Xuntin 1102 and Longyuan 3， which are 12 561.8 kg/hm2， 11 954.3 kg/hm2 and 1101.8 kg/hm2, respectively. For the soybean cultivars， the yield of Jindou 19 in Gaolan and Yuzhong are higher than other soybean cultivars， which are 1 941.7 kg/ hm2 and 1 691.7 kg/hm2， respectively. The yield of Zhonghuang 30 and XD2015-6 are higher in yongdeng， which are 1 523.1 kg/hm2 and 1 505.2 kg/hm2， respectively. Take main economic characters and agronomic traits for mechanical work， corn cultivars Jinsui 3 and soybean cultivars Zhonghuang 30, XD2015-6 are the moderate system which can be extentioned in Gansu irrigation districts along Yellow River. The high yield of crop production can be got by improving the photo syrathetic.

S513；S565.1

兰州市农业科技专项(2015-3-37)，甘肃省农业科学院中青年基金(2015GAAS20) ，国家现代农业产业技术体系建设专项(CARS-04-CES17)。