市场调查显示自上年至今,山药(淮山)价格一路暴涨,毛山药和光山药的价格分别由上年的13～18元(千克价,全国平均价,下同)和28～34元,分别暴涨至今年的35～42元和48～70元,涨幅分别为148.4%和90.3%,创下历史新高。山药价格暴涨的主要原因如下。首先,用途拓宽,销量剧增。山药 Market research shows that the price of Yam (Yam) soared from the previous year to the present. The prices of Yam Yam and Guangyao were soaring from 13 to 18 yuan (kg price, national average price, the same below) and 28 to 34 yuan This year’s 35 to 42 yuan and 48 to 70 yuan, or 148.4% and 90.3%, respectively, a record high. The main reasons for the soaring price of yam are as follows. First of all, the purpose of broadening, sales surge. Yam