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从“油稻稻”高产栽培模式推广以来,晚稻一直选用的是早、中熟品种或组合(如威优49、威优64、鄂宜105等)。近几年,我们从进一步挖掘晚稻的增产潜力出发,在原来油菜和早稻品种(组合)选用的基础上,晚稻选用较迟熟的汕优63等组合,以探索早晚两季的增产途径。1987年至1989年连续进行了三年的试验示范,1988年种植1.1万亩,1989年种植2.5万亩,油菜亩产100～150公斤,早稻亩产450～500公斤,晚杂亩产550～600公斤,两季稻谷总产1000～1100公斤,比以往晚稻选用早中熟组合的几种搭配方式亩增50～90公斤。三年的试验示范结果趋于一致,证明早、中熟早稻配较迟熟的晚杂两季产量高,经济效益十分显著,关键技术易掌握,是三熟制早晚两季高产的品种、组合选配的最佳
From “rice” high yield cultivation mode of promotion, late rice has been selected early, medium maturing varieties or combinations (such as Weiyou 49, Weiyou 64, Ery 105, etc.). In recent years, based on the further exploration of the yield potential of late rice, based on the selection of the original rapeseed and early rice varieties (combinations), the late rice is selected to be the late-maturing combination of Shanyou 63 to explore the yield-increasing ways in the early and late seasons. From 1987 to 1989, three years of pilot demonstration were carried out. In 1988, 11,000 mu of land was planted, 25,000 mu of land was planted in 1989, 100-150 kilos of rape per mu was produced, 450-500 kilos of early rice per mu was produced, 600 kilograms, the total output of two quarters of rice 1000 ~ 1100 kilograms, compared with the late rice used in the early combination of several combinations of acres by 50 to 90 kilograms. Three years of experimental demonstration results tend to be consistent, proven early maturity, early maturing hybrid rice with more late late hybrid production in two seasons, the economic efficiency is very significant, easy to grasp the key technologies, three-cropping system in the morning and evening high yield varieties, combinations The best choice