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一、研制的起因杂交水稻的推广应用是我省水稻品种更换上的一大转折,其推广速度,应用范围,单产提高是历史上任何水稻品种所不可比拟的。我省杂交水稻从1976年引进试种至1986年为止,11年累计种植9407万亩,其中“六五”期间平均每年种植1127.9万亩,占全省水稻复种面积的31%。面积种植最大的1984年达1371万亩,占36.3%。从黄淮平
First, the development of the cause of the development and application of hybrid rice is a turning point in the province on the replacement of rice varieties, the promotion of speed, scope of application, yield improvement is incomparable in history, any rice varieties. Hybrid rice cultivation in our province was introduced from 1976 to 1986 till now. In the 11 years, a total of 94.07 million mu of cultivated rice was planted, of which 11.79 million mu were planted each year during the “65” period, accounting for 31% of the total rice area in the province. The largest area planted in 1984 reached 13.71 million mu, accounting for 36.3%. From Huanghuai Ping