云南稻作区域的划分及分区育种设想(三)

• 作 者: 李铮友
• 出 处: 云南农业科技
• 发表日期: 1988年06期
• 关键词: 稻作区 双季稻区 单季晚稻 中稻品种 品种搭配 粳稻品种 晚粳 品种试验 连作晚稻 恢复系

四、中海拔稻作区本区海拔1400～1600米。一些地点光、热情况见表4。以往多是高海拔籼稻种植区。低海拔粳稻引入后,长江流域晚粳可在这一带作单季晚稻栽培。一些早熟的低海拔籼稻在本区较低的地方作中稻栽培,能适应昼夜温差大的气候变化。从双季稻品种试验看,这区的双季稻可以获得丰产,但需认真注意早、晚造品种搭配。

Fourth, the elevation of paddy area in the area 1400 ~ 1600 meters above sea level. Light and heat in some locations are shown in Table 4. In the past mostly high-altitude indica rice planting areas. After the introduction of low altitude japonica rice, the late japonica rice in the Yangtze River can be cultivated in this area for single season late rice. Some precocious low altitude indica rice in the lower reaches of this area for mid-season cultivation, to adapt to large temperature fluctuations in the climate. From double cropping rice varieties test, double crop rice in this area can get high yield, but need to pay attention to early and late varieties with.