试验通过不同马铃薯品种与不同播期相结合，对海拔800 m和900 m“薯/玉/苕/薯”四熟制套作中秋马铃薯产量进行分析。结果表明：两点品种间差异均表现为‘费乌瑞它’>‘出土黄’>‘鄂薯5号’，即早熟品种为优选；最佳播期均为玉米蜡熟末期8月24日，但最差播期不同，海拔800 m处以玉米完熟期8月31日最差，而海拔900 m处以玉米乳熟期8月10日最差。结合各处理组合产量得到，海拔800 m处品种‘费乌瑞它’搭配播期玉米乳熟期8月10日、玉米蜡熟初期8月17日、玉米蜡熟末期8月24日均可获得高产；而海拔900 m则以品种‘费乌瑞它’搭配玉米蜡熟末期8月24日最利于产量建成。因此‘费乌瑞它’搭配玉米蜡熟末期8月24日处理组合在两点均可获得高产。%This experiment was to analyze the autumn potato yield of various varieties planted at different dates in an intercropping model (potato-corn-sweet potato-potato) at the altitudes 800 and 900 m in Wuxi County. The results showed that the yield performance was‘Favorita’>‘Chutuhuang’>‘Eshu 5’, indicating that the early maturing variety was superior to others. The best planting date was on Aug. 24 (late waxen stage for corn), but the worst was different for different altitudes, on Aug. 31 (ful ripe stage for corn) at 800 m and on Aug. 10 (milk ripe stage for corn) at 900 m. By comparing different combinations, the variety‘Favorita’planted on Aug. 10 (milk ripe stage for corn), Aug. 17 (early waxen stage for corn) and Aug. 24 (late waxen stage for corn), respectively, reached higher yield in the area at 800 m, while‘Favorita’planted on Aug. 24 (late waxen stage for corn) had the highest yield in the area at 900 m. Thus, the‘Favorita’planted on Aug. 24 (late waxen stage for corn) might be the best option in both areas at 800 and 900 m.
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