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濉溪县是安徽省大豆主产区，一般每年播种面积35～40万亩，最多达60万亩，最少只有30万亩。长期以来大豆产量低而不稳。其低产的原因，一是大豆生育期间旱、涝灾害频繁，直接影响大豆的生长发育；其次是品种老化，栽培管理粗放。为改变大豆低产面貌，1992和1993年。我县承担了?
Suixi County is the main producing area of soybean in Anhui Province, generally planted an area of 35 to 400,000 mu per year, up to 60 million mu, at least only 300,000 mu. Soybean yields have been low and unstable for a long time. The reasons for its low yield, first, during the growth of soybean drought, waterlogging disasters, a direct impact on the growth and development of soybeans; followed by varieties of aging, extensive cultivation and management. In order to change the low yield of soybean, 1992 and 1993. My county has undertaken?