掌握水稻光温特性,不仅对引种育种和栽培管理有指导意义,而且是制作生育期预报的生物学基础。感温性强而感光性迟钝的品种,用有效积温的方法尚可估算出生育期的早晚。但感光性强而感温性也强的晚粳品种,除温度外,还要考虑日长因素的影响,才能比较准确的预计生育期的早晚。此外,秧龄的长短对生育期的伸缩也有一定影响,必要时需加订正。至 Grasping the light and temperature characteristics of rice not only has guiding significance for introduction breeding and cultivation management, but also serves as the biological basis for forecasting growth period. Sensitive to strong and light sensitive varieties, with effective method of temperature can still estimate the growth period sooner or later. However, the sensitivities of the strong sense of warmth of late japonica varieties, in addition to temperature, but also consider the impact of long-term factors in order to more accurately predict the growth period sooner or later. In addition, the length of the seedling age of the growth and expansion of the telescope also have a certain impact, if necessary, increase the correction. to