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砂姜黑土是黄淮海平原南部的古老耕作土壤,面积约4700万亩,其中以安徽省的面积最大,约2100万亩(以其土地面积70%计算);河南省次之,约1300万亩(包括南阳盆地500万亩),山东省又次之,约900万亩;江苏省面积较小,也近400万亩。这类土壤是黄淮海平原主要低产土壤之一,粮食平均亩产只300多斤,但亩产超过1000斤的田块,在砂姜黑土区各县都有出现。这充分说明砂姜黑土的生产潜力是很大的。
The Shajiang black soil is the ancient tillage soil in the south of the Huang-Huai-Hai Plain with an area of 47 million mu, of which the area is the largest in Anhui Province, about 21 million mu (70% of its land area); the second is Henan Province, about 13 million mu (Including 5000000 acres in Nanyang Basin), followed by Shandong Province, about 9000000 acres; Jiangsu Province, a smaller area, but also nearly 4000000 acres. This type of soil is one of the major low-yielding soils in the Huang-Huai-Hai Plain. The average grain yield per mu is only 300 kilos. However, the plots with more than 1,000 kilograms per mu have appeared in all counties of Shajiang black soil area. This fully shows that the production potential of Shajiang black soil is great.