《水经注·卷二》
搜粟都尉桑弘羊奏道：旧日的轮台以东，土地辽阔，水草丰饶，川水可灌溉田亩五千顷以上。那里气候温和，水田肥美，可以多开儿条沟渠，种植五谷，收获就会赶上中原一带了。
搜粟都尉桑弘羊奏言：故轮台以东，地广，饶水草，可溉田五千顷以上，其处温和，田美，可益通沟渠，种五谷，收获与中国同。
The Intendant of Collected Grain, Sang Hongyang, memorialized: To the east of the former Luttai, the land is vast and water and plants are abundant. Chuan Stream can irrigate five thousand qing of farmland. The climate there is temperate and the paddy fields are fertile. More canals can be dug, the five grains can be planted, and harvests will be as good as the Central Plains.