一九五九年河北省张家口地区农科所用“苹果”和“多籽白”两个品种杂交育成。一九六三年引入榆林地区农科所。一九六六年又由榆林地区农科所引入佳县,一九七一年已发展到二万一千亩,今年可再扩大到五万亩以上。一、主要性状: 生育期一百三十天左右,属中晚熟种。植株高大繁茂,抗旱、抗病、抗退化,耐涝、耐肥、适应性强,山、川、水、坝地均能种植,增产潜力大,一般山早地亩产二至三千斤,川、水地亩产三至四千斤,在同样栽培条件下,较“五捻白”、“紫皮洋芋”等当地 In 1959, Zhangjiakou, Hebei Province, agricultural use of “apple” and “more seeds white” breed two breeds. In 1963 introduced to Yulin Prefecture Agricultural Science Institute. In 1966, it was also introduced into Jia County by the Agricultural Science Division of Yulin Prefecture. It has grown to 21,000 mu in 1971 and can be expanded to more than 50,000 mu this year. First, the main traits: one hundred and thirty days of growth period, is a late-maturing species. Plant lush, drought, disease resistance, degeneration, waterlogging, fertilizer, adaptability, mountains, rivers, water and dam can be planted to increase production potential, generally mountain early yield of 2-3 kg, Sichuan, water mu to produce three to four kilograms, under the same cultivation conditions, compared to “five twisting white”, “purple potato” and other local