闽南热量资源丰富,可以春秋两季杂交稻连作制种,既充分利用了土地资源与气候资源,又可春制秋用,解决当年种子不足等问题。但由于季节紧迫、调节余地小,给制种工作带来了一系列问题。在抽穗扬花期,春制有低温冷害(伴随阴雨寡照)、高温低湿危害 Minnan is rich in caloric resources and can be used for continuous hybrid rice production in spring and autumn. It not only makes full use of land resources and climate resources, but also makes spring autumn use and solves the problems of lack of seeds in that year. However, due to the seasonal urgency and the small room for adjustment, a series of problems have arisen in seed production. In the flowering heading stage, the spring system of chilling injury (with rain and light), high temperature and low humidity hazards