[ Objective ] The maize variety suitable for the low density growth in Shanxi Province was selected. [ Method ] The performance of the agronomic traits and yield of 9 maize varieties with middle-large ear,which were planted under two cultivations :irrigation and non-irrigation in upland ,was experimented by means of randomized block design. [ Result ] The length and diameter of ear ,the number of kernel per ear and 100-seed weight dry of all the varieties in the irrigation condition were higher than those in non-irrigation in upland and in total the yield of maize in irrigation treatment was significantly higher than that in non-irrigation treatment. In the experiment in the non-irrigation in upland, the yield of Ansen No. 7, Fuyou No. 9, Pinyu No. 1 was higher than that of the CK—Luyu No. 6. In the experiment in the irrigation, the yield of Xinyu 106, Pinyu No. 1, Ansen No. 7, Fuyou No. 9, Yongyu No. 3 was higher than that of the CK. The research on the index of drought-tolerance showed that the drought-tolerance of Fuyou No. 9, Ansen No. 7 and Luyu No. 6 was better among these varieties. [ Conclusion ] Fuyou No. 9, Ansen No. 7 and Luyu No. 6 could be extended in clryland area. Xinyu 106,Pinyu No. 1 ,Ansen No. 7 ,Fuyou No. 9 ,Yongyu No. 3 and Luyu No. 6 with large ear could be planted in the area with good irrigation condition for higher yield.%[目的]筛选出适合山西省种植的稀植玉米品种.[方法]采用随机区组设计研究了9个中大穗型玉米新品种在旱地和旱期浇水2种条件下的农艺性状和产量表现.[结果]旱期水浇试验中所有品种的穗长、穗粗、穗粒数、百粒重都要高于旱地试验中所对应的品种.水浇组产量整体也明显高于旱地组.其中旱地试验中,较对照潞玉6号增产的是安森7号、富友9号、品玉1号;水浇试验中,较对照潞玉6号增产的是忻玉106、品玉1号、安森7号、富友9号、永玉3号.抗旱指数表明,富友9号、安森7号、潞玉6号3个品种的抗旱性较好.[结论]富友9号、安森7号、潞玉6号3个品种可以作为旱地玉米生产中的推广品种;忻玉106、品玉1号、安森7号、富友9号、永玉3号、潞玉6号6个大穗品种是水分满足条件下玉米生产中较好的推广品种.
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