1979年我省江汉平原和鄂中丘陵稻区的春旱异常严重,5月份以前,滴雨未落,普遍缺水育秧。各县都有相当一部分稻田,直等到5月上旬普降喜雨之后,才播种中稻“691”。因此,中稻种植面积急剧上升。其中“691”品种占80％以上。 In 1979, the spring drought in the Jianghan Plain and the hilly region of Hubei in the province was extremely serious. Before May, the rain did not drop and there was a general lack of water and seedlings. A considerable part of the paddy fields in all counties did not sow a medium-sized rice “691” until the pleasant rain began in early May. As a result, the area planted to rice has risen sharply. Among them, “691” varieties accounted for more than 80%.