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粤517和双雅258系广东农科院水稻所选育的品种.1991年由我院品资站引进在元谋作早稻试验,折合亩产分别为1002.5千克和927.5千克.1992年扩大示范并进行品比试验,粤517示范5亩,平均亩产800.6千克,其中0.98亩达912千克;双雅258示范4.8亩,平均亩产856.05千克,其中1.14亩达934.5千克.品比试验以汕优63作对照,粤517折合亩产1000千克,双雅258为984.3千克,分别比对照(807.5千克)增产192.5千克和176.8千克.
Yue 517 and Shuangya 258 strains of Guangdong Academy of Agricultural Sciences selected varieties of rice in 1991 by the hospital materials station in Yuanmou for the introduction of early rice test, equivalent to 1002.5 kg per mu and 927.5 kg respectively. Commodity ratio test, Guangdong 517 Demonstration 5 acres, the average per-mu yield of 800.6 kg, of which 0.98 mu up to 912 kg; Shuangya 258 demonstration 4.8 acres, the average yield of 856.05 kg, of which 1.14 mu up to 934.5 kg. As a control, Guangdong 517 equivalent to 1000 kg per mu, Shuangya 258 to 984.3 kg, respectively, than the control (807.5 kg) increase 192.5 kg and 176.8 kg.