为了解冀西北坝上地区主栽8种马铃薯的营养、质构品质及加工适宜性，本文对8种马铃薯的营养指标（淀粉、粗蛋白、维生素C、干物质、还原糖）和质构指标（外皮层硬度、内皮层硬度、纤维含量、紧实度面积）进行了测定和相关性分析，并利用隶属函数法对各品种进行了综合评价。结果表明，营养及质构品质在不同马铃薯品种间均存在显著差异（p<0.05）。5项营养指标中还原糖含量的变异系数最大为49.23%，淀粉含量的变异系数最小为17.09%；4项质构指标中紧实度面积的变异系数最大为28.55%，肉层脆性的变异系数最小为19.56%。由隶属函数分析得到8个品种的主要营养品质从优到劣依次为：大西洋>布尔班克>夏波蒂>冀张薯8号>黑金刚>冀张薯12号>冀张薯5号>红美人；主要质构品质从优到劣依次为：大西洋>冀张薯12号>布尔班克>黑金刚>夏波蒂>冀张薯8号>红美人>冀张薯5号，并由此获得了8种马铃薯的加工适宜性状况。本研究不仅为合理利用冀西北坝上主栽马铃薯品种提供科学依据，也为后期开展马铃薯精深加工提供一定理论参考。

To understand the nutritional quality, texture characteristics and processing suitability of 8 varieties of potatoes which mainly cultivated in Bashang area of northwest Hebei, five main nutritional indexes (the contents of starch, crude protein, vitamin C, dry matter, reducing sugar) and four main texture indexes (cortical hardness, endodermal hardness, flesh skin brittleness, area of compactness) were determined. Besides, the comprehensive evaluation of nutritional quality and texture characteristics were analyzed respectively by the subordinate function method. The results showed that the main nutritional and texture indexes varied significantly (p<0.05) in different varieties of potatoes. Among the five main nutritional indexs of different varieties of potatoes, the coefficient of variation of reducing sugar content was 49.23%, and that of starch content was 17.09%; among the four main texture indexs, the coefficient of variation of compactness area was 28.55%, and that of meat brittleness was 19.56%. With the analysis of the membership function, the order of the nutritional quality of different varieties of potatoes was Atlantic>Burbank>Shapoti>Jizhangshu No.8>Heijingang>Jizhangshu No.12>Jizhangshu No.5>Red Beauty, and the corresponding order of the texture characteristics was Atlantic>Jizhangshu No. 12>Burbank>Heijingang>Shapoti>Jizhangshu No.8>Red Beauty>Jizhangshu No.5. Consequently, the processing suitability of the 8 varieties of potatoes was also obtained. In conclusion, this study provided not only a scientific basis for the application of the different varieties of potatoes mainly cultivated in Bashang area of northwest Hebei, but also a theoretical reference for their deep processing in the future.

河北省重点研发计划农业关键共性技术攻关专项（18227138D）；河北省重点研发计划项目（20325501D）；河北省薯类产业技术体系配套农机与产后加工岗位创新团队建设项目(HBCT2018080206)；河北省现代农业技术体系蔬菜产业创新团队建设项目(HBCT2013050208)