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砂姜黑土是黄淮海平原南部古老耕作土壤,面积约有4700万亩,主要分布在安徽淮北平原,其次为河南淮河上游平原,山东中南部和江苏北部等地。安徽淮北平原砂姜黑土占耕地总面积53％,占黄淮海平原砂姜黑土36％。在这种土壤上种植农作物,粮食亩产只有300斤左右。低产原因,主要是涝渍、干旱、瘠姜等因素。涝渍:砂姜黑土涝渍原因,不外环境条件和土壤性质两个方面。砂姜黑土区,一般地势低洼,农田水利工程不配套,地面径流不畅,特别是在雨量集中的6～9
Shajiang black soil is the ancient cultivated soil in the south of the Huang-Huai-Hai Plain, with an area of 47 million mu, mainly distributed in the Huaibei Plain of Anhui Province, followed by the upper reaches of the Huaihe River in Henan Province, central-southern Shandong and northern Jiangsu. The plain ginger in the Huaibei Plain accounts for 53% of the total arable land, accounting for 36% of the lime-black soil in the Huang-Huai-Hai Plain. Planting crops on this soil yields about 300 pounds of mu per mu. Low yield causes, mainly waterlogging, drought, barren ginger and other factors. Waterlogging: Shajiang black soil waterlogging causes, but no matter the environmental conditions and soil properties in two aspects. Shajiang black soil area, the general low lying, farmland water conservancy project is not complete, ground runoff poor, especially in the rainfall concentrated 6 ~ 9