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项城县砂姜黑土面积占总耕地的51.7％,全县十八个乡镇有十五个广泛分布着砂姜黑土。历史上有种植芝麻的习惯,五十年代芝麻面积曾发展到18万亩,目前种植面积仍达8万亩,其中70％以上分布在砂姜黑土区。据35年(1949—1984年)资料统计,砂姜黑土区单产高于潮土区。如本县贾岭乡,砂姜黑土面积占耕地面积的98.8％,年平均种植芝麻7803亩,比潮土区城郊、南顿、郑郭三乡芝麻面积之和还多,贾岭乡芝麻平均单产25.4公斤,最高45公斤;潮土区三乡平均单产24.3公斤,最高42.5公斤。砂姜黑土易涝易旱,芝麻又是不耐涝作
Xiangjiang County Shajiang black soil area accounted for 51.7% of the total arable land, the county’s 18 towns and 15 are widely distributed Shajiang black soil. Sesame habit of planting the history of the sesame area in the 1950s has grown to 18 million mu, the current area is still up to 80000 acres, of which more than 70% are distributed in the Shajiang black soil area. According to statistics of 35 years (1949-1984), the yield per unit area in Shajiang black soil area was higher than that in the shady area. For example, Jialing Township in this county accounts for 98.8% of the total area of cultivated land. The average annual planting of sesame seeds is 7803 mu, more than the combined area of sesame seeds in suburbs, Yield 25.4 kilograms, the highest 45 kilograms; Chao soil three villages average yield 24.3 kilograms, the highest 42.5 kilograms. Shajiang black soil easy floods drought prone, sesame and waterlogging is impatient