西吉县玉米全膜覆盖条件下区域布局研究

为了筛选出适合西吉县不同生态区域、不同海拔高度地区种植的玉米品种，在西吉县玉米的不同种植区，进行了不同海拔高度玉米品种比较试验。结果表明，海拔1800m以下葫芦河川道区属低海拔适宜种植区，适宜种植的玉米品种为金穗1号、中单5485和登海1号等中晚熟品种；海拔1800～1900m西部黄土丘陵区属中海拔适宜种植区，适宜种植的玉米品种为金穗1号、富农1号和吉单261等中晚熟品种；海拔1900～2000m东部土石山区属高海拔次适宜区，适宜种植的玉米品种为长城706、金穗1号和酒单3号。总体上评价，金穗1号玉米品种在西吉的适应性较强，适合在西吉不同海拔地区种植，产量表现均突出，应在今后扩大种植面积。

Study on Regional Distribution of Corn Varieties under Mulching Condition in Xiji County

To screen the corn varieties suitable for planting in different ecological regions and different altitudes in Xiji County, the corn varieties in different planting areas of Xiji County were compared at different altitudes. The results showed that Hulu river road area with altitude less than 1 800 m belonged to low altitude suitable planting area, which was suitable for planting middle-late season varieties such as Xinsui 1, Zhongdan 5485 and Denghai 1 ; the western loess hilly area with altitude of 1 800-1 900 m belonged to middle altitude suitable planting area, which was suitable for planting middle-late season varieties such as Jinsui 1, Funong 1 and Jidan 261; the eastern earth-rocky mountainous area with altitude of 1 900-2 000 m belonged to high altitude sub-suitable area, which was suitable for planting Changcheng 706, Jinsui 1 and Jiudan 3. Overall, Jinsui 1 has strong adaptability in Xiji County, which is suitable for planting at different altitude areas in Xiji County; it has outstanding performance, and the planting area should be expanded in the further.