近年来,我省农业科研部门选育出了一批早熟高产的杂交水稻新组合,如威优35、威优64、威优98等,解决了早、中、晚稻不同熟期组合的配套问题。为使这些新组合尽快大面积应用于生产,开拓杂交水稻生产新领域,1983年湖南省科委把“杂交水稻亩产吨粮栽培技术研究”列为全省重点科研攻 In recent years, the province’s agricultural research departments bred a new crop of early maturity and high yield hybrid rice, such as Weiyou 35, Weiyou 64, Weiyou 98, etc., to solve the early, middle and late rice combinations of different maturity Matching problems . In order to enable these new combinations to be applied to production as soon as possible and open up new areas for hybrid rice production, in 1983, Hunan Provincial Science and Technology Commission listed the “Research on Tillage Cultivation Technique of Hybrid Rice Yield Per Mu” as the Key Scientific Research