为筛选出适宜陇中旱作区种植的优质马铃薯品种，解决当地马铃薯生产中存在的品种老化、抗病性弱、产量低、品质差等问题。以当地主栽马铃薯品种陇薯6号为对照，对引进的7个马铃薯品种进行了品种筛选试验。结果表明，宁薯19号、 陇薯11号折合产量较高，分别为39 245、37 350 kg/hm2，分别较对照品种陇薯6号增产15.87%、10.27%。综合分析认为，宁薯19号、陇薯11号较对照品种陇薯6号增产幅度大，综合农艺性状好，可在陇中旱作区及类似生态区种植。

To select premium potato cultivars suitable for the dry farming area of central Gansu and to address the issues of variety aging, weak disease resistance, low yield and poor quality in the local potato production, a selection experiment using 7 introduced potato cultivars were conducted with local main cultivar Longshu 6 as control. Results showed that yields in Ningshu 19 and Longshu 11 were higher i.e., 39 245, 37 350 kg/ha, respectively, which were 15.87% and 10.27% higher compared with that of the control Longshu 6, respectively. Comprehensive analysis indicated that Ningshu 19 and Longshu 11 showed good yield increase rates compared with the control Longshu 6 and good comprehensive agronomic characters which could be cultivated in dry farming area of central Gansu as well as other ecological regions with similar environmental conditions.

S532

甘肃省科技重大专项(20ZD7NA007)。