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江汉平原地处长江中游,全年实际日照时数为1800—2100小时,年平均温度16℃,无霜期250—280天,年降雨量1100—1400毫米。江汉平原土地肥沃辽阔,是我国的粮棉生产基地也是我国蚕豆的主要集中产地之一。但蚕豆单产一直不高,常年单产只有50多公斤,最高亩产也只有100多公斤.近年来,在“蚕豆高产栽培研究”的试验示范中,连续几年出现亩产250公斤左右的高产纪录,(其中1982年亩产251.4公斤,1983年春季在蚕豆花荚期出现八九级风灾袭击,亩产212.5公斤,1984年
The Jianghan Plain is located in the middle reaches of the Yangtze River. The actual annual sunshine hours are 1800-2100 hours, the annual average temperature is 16 ℃, the frost-free period is 250-280 days and the annual rainfall is 1100-1400 mm. Jianghan Plain fertile land is vast, is China’s grain and cotton production base is one of the main concentrated origin of Chinese beans. However, broad beans per unit yield has not been high, perennial yield of only 50 kilograms, the highest yield of only 100 kilograms .In recent years, “broad bean cultivation research,” the pilot demonstration, for several consecutive years yield of about 250 kg per mu yield (Of which 251.4 kg per mu in 1982 and 88 or 97 typhoons in the spring and autumn of 1983, yielding 212.5 kg per mu in 1984