研究筛选会宁半干旱地区抗旱高产优质玉米品种，为促进会宁半干旱地区全生物降解地膜替代普通地膜种植方式的进一步转变提供科学依据。以引进的11个抗旱玉米品种为试验材料，利用全生物降解黑色地膜及全膜双垄覆盖沟播技术，测定和分析玉米的生育期、农艺性状、产量、SPAD值及品质指标。结果表明，在种植密度为6万株/hm2时，先玉1483折合产量最高，为9 584.1 kg/hm2；MC703、迪卡C1563折合产量较高，分别为9 147.8 、8 987.2 kg/hm2。先玉1483、MC703、迪卡C1563生育期均为127 d，灌浆时期叶片SPAD值分别为55.7、56.5、52.3，后期的光合能力较强，且综合籽粒营养品质较好。以上3个玉米品种可作为会宁半干旱区使用全生物降解地膜进行全膜双垄沟播种植模式下的示范推广品种。

In order to screen out drought-resistant, high-yielding and high-quality maize varieties in the semi-arid areas of Huining so as to provide a scientific basis for transitioning from traditional plastic mulch to fully biodegradable mulch film cultivation, this study took 11 drought-resistant maize varieties as experimental materials, and utilized fully biodegradable black mulch film and full-film double-monopoly cover furrow sowing technology to determine and analyze maize growth period, agronomical traits, yields, SPAD values, and quality indexes. Results showed that under the planting density of 60 000 plants/ha, the highest yield was recorded for Xianyu 1483 (9 584.1 kg/ha), followed by MC703 (9 147.8 kg/ha) and Dika C1563 (8 987.2 kg/ha), and the growth period was 127 d for Xianyu 1483, MC703 and Dika C1563. The SPAD values of the leaves of Xianyu 1483, MC703 and Dika C1563 were 55.7, 56.5 and 52.3, respectively, during the grain-filling stage, which showed stronger photosynthetic capacity and better nutritional quality of the integrated grains in the late stage. In conclusion, the three varieties of Xianyu 1483, MC703 and Dika C1563 performed the best, and can be used as demonstration varieties in the semi-arid zone of Huining under the all-biodegradable film ridging planting mode.

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国家重点研发计划项目(2022YFD1602101)；甘肃省重点研发计划项目(24YFNA014)；国家玉米产业技术体系建设项目(CARS-02-66)。