论文部分内容阅读
1.籼稻和粳稻籼稻适宜生育于热带和亚热带的华南和华中地区。粳稻适宜生育于气候温和的温带和热带、亚热带的高地。我国南方多籼稻,北方多粳稻。淮河流域以北及西南高原多分布粳稻。籼稻阳粳稻是气候生态型。 2.早稻和晚稻早晚稻的主要差别在于生理特性上对日长反应不同。晚稻的感光性与野生稻相似,对短日照属敏感型。早稻对日长
Indica and japonica indica Suitable for fertility in tropical and subtropical regions of southern and central China. Japonica rice is suitable for breeding in temperate temperate and tropical and subtropical highlands. South China more indica rice, more northern japonica rice. North of the Huaihe River Valley and southwest plateau distributed japonica rice. Indica Yang rice is a climatic ecotype. 2. The main difference between early and late rice in early rice and late rice is that the physiological response to Japanese long-term response is different. The sensitivity of late rice is similar to that of wild rice, which is sensitive to short daylight. Early rice is Japanese