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定(远)、凤(阳)、嘉(山)三县位于江淮丘陵地区西北部,东与天长、江苏盱眙毗邻,南接滁县、来安,西連淮南市、水家湖,北与蚌埠市接壤。丘陵起伏地一般高程为六十至一百米,相对高差約二十米,坡度約在五至十五度之間,向淮河方向逐漸低傾。为江淮丘陵典型的低产地区,平均每亩耕地年产粮食仅一百零八点六斤(1952、1957、1962三年平均数)。全区(定、凤、嘉三县低产区的簡称,下同)耕地面积四百四十六点六万亩,其中旱地占58.9%,水田(包括水旱地)占41.1%。农作物以稻、麦、豆类为主,定远、凤阳多产烟叶、高粱,嘉山县玉米面积較大。低产土質多为黄泥土、黄砂土、漏砂白土等,占耕地总面积37.5—49%。
The counties (Dingyuan, Fengjia (Yang) and Jia (Shan)) are located in the northwestern part of the Jianghuai hilly region. They are adjacent to Tianchang, Jiangsu Xuyi, south to Chu County, Laian and west to Huainan, Shuijiahu, Bengbu City bordering. The general elevation of the hills and downs is sixty to one hundred meters and the relative height difference is about twenty meters. The slope is about five to fifteen degrees, and gradually lowers toward the Huaihe River. For the typical low-yielding areas in Jianghuai Hilly, the average grain yield per mu of arable land is only 108.6 kg (1952, 1957, 1962, three-year average). The whole area (Ding, Feng and Jiasan low-yield areas referred to, the same below) arable land area 4 466,000 mu, of which dry land accounted for 58.9%, paddy fields (including water and dry land) accounted for 41.1%. Crops to rice, wheat, beans, Dingyuan, Fengyang prolific tobacco, sorghum, Jiashan corn larger. Low-yield soil mostly yellow soil, yellow sand, sand and other missed sand, accounting for the total area of 37.5-49% of arable land.