杂交水稻从1976年推广以来已在我国广泛种植。实践证明,它具有产量高、适应性广、抗性强、收益大等优点,对促进我国粮食生产的发展起了重大作用。同时杂交稻的选育成功,不仅标志着这项技术处于世界领先地位,而且还丰富了遗传育种理论与实践,对世界农业科学产生了很大影响。 一? Hybrid rice has been widely planted in our country since its popularization in 1976. Practice has proved that it has the advantages of high yield, wide adaptability, strong resistance and large income, which play a significant role in promoting the development of grain production in our country. At the same time, the successful breeding of hybrid rice not only indicates that this technology is in a leading position in the world, but also enriches the theory and practice of genetics and breeding, and has a great impact on world agricultural science. one?