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近年来,我省杂交稻生产迅速发展,1979年种植面积已占单季中稻面积的55.4％。在大面积生产条件下,杂交稻比常规中稻增产显著,对全省粮食增产起了较大的作用。 国际稻(IR_(24),IR_(661)等)先于杂交稻引进我省试种。但由于杂交稻的引进和迅速推广,国际稻未能在生产上扩大利用(仅作为杂交制种的父本应用),因而对其生产性能及高产栽培规律未能进行广泛、深入的研究。但从一些单位连年较大面积种植的结果来看,国际稻同样表现高产稳产。我院自1973年引
In recent years, the rapid development of hybrid rice production in our province, 1979 acreage accounted for 55.4% of single-season medium-sized rice area. Under the conditions of large-scale production, the hybrid rice had a significant yield increase over the conventional middle rice and played a greater role in increasing the province’s grain output. International rice (IR_ (24), IR_ (661), etc.) were introduced into the province for trial cultivation prior to hybrid rice. However, due to the introduction and rapid popularization of hybrid rice, international rice has not been able to expand its use in production (only as a paternal application for hybrid seed production), therefore, extensive and in-depth studies on its performance and high-yielding cultivation methods have not been conducted. However, according to the results of large-scale planting of some units in successive years, the international rice also shows a high and stable yield. Our hospital since 1973 cited