Abstract:

In order to give full play to the application value of conventional rice variety Guiyu 8 with high yield and fine quality, the ecological adaptability experiment was carried out in the northern and alpine mountain areas in Guangxi province. The results showed that Guiyu 8 had good ecological adaptability. The average growth period and yield of Guiyu 8 planting as medium rice and late rice in northern and as medium rice in alpine areas of Guangxi province were 123 d and 7.32 t/hm2, 121 d and 7.70 t/hm2, 131 d and 7.53 t/hm2. Guiyu 8 showed relatively high yield, medium growth period planting as medium rice, but slightly longer growth period planting as double-cropping late rice. There was significant positive correlation between seed setting rate and actual yield（ r=0.76**）. The agronomic characters and comprehensive resistance of Guiyu 8 in the field were good, with no rice blast, bacterial blight and sheath blight. The grain quality of Guiyu 8 was excellent. Therefore, Guiyu 8 is suitable for planting as medium or one season rice in north of Guangxi province, and planting as medium rice in alpine areas of Guangxi province.

Key words: conventional rice, Guiyu 8, fine quality, ecological adaptability

摘要：

为充分发挥高产优质常规稻品种桂育8号的应用价值，在广西桂北及高寒山区稻作区对其生态适应性进行试验，为扩大其种植区域提供参考依据。结果表明，桂育8号生态适应性好，在桂北稻作区作双季晚稻、中稻种植以及在高寒山区稻作区作中稻种植平均生育期与产量分别为123 d和7.32 t/hm2、121 d和7.70 t/hm2、131 d和7.53 t/hm2,产量较高，作中稻生育期适中，但作双季晚稻生育期稍微偏长；结实率与实际产量呈显著正相关（r=0.76**）；田间农艺性状及综合抗性较好，未见有稻瘟病、白叶枯病和纹枯病发生；米质优。因此，桂育8号适宜在广西桂北稻作区作中稻和一季稻种植、在高寒山区稻作区作中稻种植。

关键词: 常规稻, 桂育8号, 优质, 生态适应性