为了筛选出适宜陇东旱塬区种植的马铃薯品种，在黑膜垄作栽培条件下对5个马铃薯新品种进行了比较试验。试验结果表明，参试各马铃薯品种折合产量以冀张薯12号最高，为47 250 kg/hm2，较对照品种陇薯7号增产26.00%；陇薯9号次之，折合产量为39 040 kg/hm2，较对照品种陇薯7号增产4.11%。陇薯9号、冀张薯12号商品薯率分别较对照品种陇薯7号增加10.0、7.6百分点。可见冀张薯12号和陇薯9号折合产量高、商品薯率高，且商品性优良、品质优良、综合性状表现好，具有明显增产增收效果，适宜在陇东旱塬区及其生态类似区种植。

In order to screen out suitable potato varieties for planting inLongdongdrylandof eastern Gansu， under the condition of mulching ridge cultivation， a variety comparison test was carried out on the five new potato varieties introduced in Longdong dry plateau area. The results showed that the yield of the tested potato varieties was the highest in JizhangshuNo.12， which was 47 250 kg/hm2， an increase of 26.00% compared to the control variety LongshuNo.7； LongshuNo.9 came in second， with an equivalent yield of 39 040 kg/hm2 of which yield increased by 4.11% compared with the control. The commercial potato rates of LongshuNo.9 and JizhangshuNo.12 increased by 10.0% and 7.6% compared with the control， respectively.In conclusion， Jizhangshu No. 12 and Longshu No. 9 have a high equivalent yield， a high rate of commercial potatoes， good commercial properties， good quality， and good comprehensive traits. They have obvious effects of increasing production and income， and they are suitable to promote for dry plateau areas in eastern Gansu and its Ecological similar area.

S532

甘肃省农业科学院科技成果转化项目(2020GAAS-CGZH04)。