关键词: 马铃薯主粮化, 营养价值, 熵权秩和比法, 评价

Abstract: There are lots of varieties of potato in the world, and over 80 varieties are planted throughout China. There are differences in the nutritional componant and content among different cultivated varieties. On the background of taking potato as staple, improving residents’ dietary nutrition has become one of the important targets. Therefore, it is significant to assess and screen the whole nutrition and nutrient-rich potato varieties. Selecting 7 potato varieties mainly planted in Dingxi, Gansu Provience as research objectives, this paper carried out quantitative evaluation on the nutrients differences between these varieties by the method——entropy weight rank sum ratio. The results indicated that ‘Longshu8’ had the best nutrition value, followed by ‘Longshu3’ and ‘Longshu6’. Beside evaluating potato nutritional value, this method could also be used to evaluate other agriculture products, such as cereal, fruit, vegetable, egg, meat, milk, etc.. This method could be applied widely and with better effect.

Key words: potato staple, nutritional value, entropy weight rank sum ratio, evaluation