陇中旱作区马铃薯种植历史悠久，马铃薯产业已成为当地的主导产业。为筛选出陇中旱作区优质抗旱的淀粉加工型和全粉加工型马铃薯新品种。以陇薯3号为对照品种，在陇中旱作区对引进适宜不同生态区域种植的8个加工型马铃薯新品种进行筛选比较试验。结果表明，陇薯16号、陇薯17号、甘农薯9号这3个品种生育期长(120～125 d)，为晚熟或中晚熟品种；出苗率高，植株生长旺盛，主茎数多，大中薯率均高于80%；薯形为圆形或长卵圆形、薯皮光滑、芽眼浅、食味优(蒸煮食味综合评分分别为7.00、7.50、6.63分)；干物质含量高，分别为253.0、243.2、249.0 g/kg，分别较对照品种陇薯3号增加6.0、-3.8、2.0 g/kg；还原糖含量分别为2.70、1.40、1.10 g/kg；折合产量分别为29 670、30 855、31 055 kg/hm2，分别较对照品种陇薯3号增产5.62%、9.84%、10.56%，可作为陇中旱作区全粉加工型品种推广种植。由于陇薯16号淀粉含量高达232.0 g/kg，也可作为陇中旱作区优质的高淀粉加工型品种进行推广。

The potato production has a long history in the dry farming area of central Gansu, and the potato industry has become the leading industry in this region. In order to screen out new potato varieties for dryland farming area in central Gansu which were high-quality and drought-resistant ones and would be suitable for both starch processing and flour processing, a comparative experiment was conducted on 8 potato varieties from different ecological areas with Longshu 3 as the control. The results showed that growth periods of Longshu 16, Longshu 17 and Gannongshu 9 were long (120 to 125 d) which were regarded as late or medium to late maturing varieties. High emergence rate, vigorous plant growth and large number of main stems were detected, and rates of large and medium tubers were all above 80% in three varieties. Tubler shape of the three was circular or long oval with smooth skin and shellow bud eyes and the taste was excellent (the comprehensive scores of taste after steaming and boiling were 7.00, 7.50 and 6.63 points, respectively). Dry matter contents of three were high which were 253.0, 243.2 and 249.0 g/kg, respectively and were 6.0,-3.8 and 2.0 g/kg higher than that of the control variety Longshu 3, respectively. The reducing sugar contents in three varieties were 2.70, 1.40 and 1.10 g/kg, respectively. The average yields were 29 670, 30 855 and 31 055 kg/ha, respectively, which were increased by 5.62%, 9.84% and 10.56% compared with that of the control variety Longshu 3, respectively. These three varieties could be promoted and cultivarted as flour processing type in the dry farming area of central Gansu. In additional, Longshu 16, with a starch content as high as 232.0 g/kg, could also be suitable for promotion and cultivation in dryfarming area of central Gansu as a starch processing potato variety with great quality.

S532

定西市科技人才支持专项(DX2021AR06)。