【摘要】 天水市位于甘肃省东南部,自然条件非常适合种植马铃薯,是甘肃省马铃薯主产区之一。山旱地晚熟菜用及高淀粉型马铃薯生产是天水市马铃薯产业的优势,在农业经济中占有重要地位。但是天水市山旱地马铃薯生产中存在着品种单一、优质专用品种相对缺乏及产量水平相对低下等问题,这些因素制约着该区域马铃薯产业的发展。为筛选出适宜天水市山旱地优质马铃薯品种,提高产量和品质,以‘陇薯6号’(当地主栽品种)为对照,对引进的11个品种(系)植物学特性、生育期、经济性状等进行比较试验。结果表明,‘D862’、‘青薯10号’和‘定薯3号’折合产量分别为36 849,35 676和30 148 kg/hm~2,较对照分别增产100.64%、94.25%和64.15%,且商品薯率、抗病性等综合性状优良,因此这3个品种可在天水市进一步试验和示范。更多还原

【Abstract】 Tianshui City is located in the southeast of Gansu Province, and natural conditions are very suitable for growing potatoes. It is one of the main potato producing areas in Gansu Province. Late maturing vegetable potatoes and high starch potatoes are the advantage of the potato industry in Tianshui City, playing an important role in the agricultural economy. But there are still problems in the production of potato in mountainous dryland of Tianshui City,such as few varieties available for choice, lack of high-quality special-purpose varieties and low production level, which constrain development of the potato industry in the region. Eleven potato varieties(lines) were introduced in this experiment and botany characteristics, growth duration, and economic traits were investigated and recorded using’Longshu 6’(a main local variety) as a control in order to select new potato varieties(line) with high yield and quality suitable for planting in mountainous dryland of Tianshui City. The yield of ’D862’, ’Qingshu 10’, and ’Dingshu 3’ was 36849, 35 676 and 30 148 kg/ha, respectively, increasing by 100.64%, 94.25% and 64.15%, respectively, compared with the control ’Longshu 6’. These three varieties were all showed high marketable tuber percentage and disease resistance. Therefore, these three varieties could be further tested and demonstrated in Tianshui City.更多还原