根据水稻品种的生育期,确定品种布局和播栽适期,是合理利用水稻品种的栽培季节适应性,充分发挥良种增产潜力的基础。所以,在不同生产条件下,水稻品种生育期的预测是一项十分重要的工作,特别是苗情测报和遇灾补播,常需要比较准确地确定水稻品种的生育进程或最迟补播时期,生育期预测就显得更为重要。水稻品种生育期的预测,可通过多种 According to the growth period of rice varieties, to determine the type of plant layout and sowing date, is the rational use of rice cultivars season adaptability, give full play to the potential of seed production potential. Therefore, under different production conditions, the prediction of the rice growth period is a very important task, especially for the measurement of seedling occurrence and disaster recovery. It is often necessary to determine the fertility progress of rice varieties or the period of the latest rebooting , Growth forecast is even more important. Rice varieties of growth period can be predicted through a variety of