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1990年,我们在长沙县春华山乡用两系法杂交水稻作双晚栽培示范721.72亩,平均亩产535.3公斤。大穗型组合W6154S/特青栽培示范214.09亩,平均亩产达600.2公斤,比三系高产组合汕优63(110.8亩平均)每亩增产65.9公斤,增产率为12.3%。其中较高产的7.566亩,总产稻谷5501.5公斤,平均亩产
In 1990, we planted 721.72 mu of double-cropped hybrid rice with two lines of hybrid rice in Chunhua Mountain Township, Changsha County, with an average yield of 535.3 kg per mu. Large-spike combination W6154S / Teqing cultivation demonstration 214.09 acres, the average yield of 600.2 kilograms, higher than the three-line high yield combination Shanyou 63 (110.8 acres average) yield 65.9 kilograms per mu, yield was 12.3%. Among them, the high-yielding 7.566 mu and the total output of 5501.5 kilograms of rice, the average yield per mu