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1.水稻品种的光温反应水稻是一种喜温的短日性作物,在短日高温条件下,生长发育较快。其品种生长发育特性与气候环境条件有着密切的关系。生育期是随纬度北移而日数逐渐增多,随海拔升高而日数逐渐增多,随季节推后而日数相对减少。这是因为水稻生长发育阶段日数的地域性和季节性变化,在出苗期和抽穗结实期主要是受温度影响,在幼穗开始分化期和抽穗期主要是受日长支
1. Rice varieties of light and temperature response Rice is a warm weather short-day crops, short-term high-temperature conditions, rapid growth and development. Its variety growth and development characteristics and climate and environmental conditions are closely related. The growth period is northward with latitude and the number of days gradually increases. With the elevation increasing, the number of days gradually increases, but decreases with the seasons postponing. This is because the regional and seasonal changes in the number of days of rice growth and development are mainly affected by temperature at the seedling stage and heading stage, and are mainly affected by the long branch