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杂交水稻在我省大面积推广以来,为我省粮食增产做出了重大的贡献。但从全省的情况看,杂交水稻生产的发展不够平衡,为了进一步发掘杂交水稻增产潜力,加快我省粮食生产发展的速度,本文着重对我省杂交水稻生产的历史、现状及发展前景进行了回顾与研讨。 (一)我省杂交水稻生产的回顾杂交水稻从1974年开始在我省试种,到1977年全省九个地、市种植面积达240.96万亩:1978年全省发展到800万亩,占稻谷播种面积2533.7万亩的31.51％:平均亩产262公斤,比年报稻谷亩产239.5公斤,高22.5
Since the popularization of hybrid rice in our province, it has made a significant contribution to the grain yield increase in our province. However, from the perspective of the province, the development of hybrid rice production is not balanced. In order to further explore the yield potential of hybrid rice and speed up the development of grain production in our province, this paper focuses on the history, current situation and development prospects of hybrid rice production in our province Review and discussion. (I) Review of Hybrid Rice Production in Hunan Province Hybrid rice cultivation in our province began in 1974. By 1977, nine provinces in the province had a total planting area of 2,409,600 mu. In 1978, the province’s development reached 8 million mu, accounting for Rice paddy area of 25.337 million mu of 31.51%: an average of 262 kg per mu, annual output of 239.5 kg of rice per mu, high 22.5