航天育种是将植物种子或枝芽搭载于返回式航天器,利用太空微重加重离子、多种宇宙射线、大交变磁场和短期过载等因素,使种子基因发生突变,获得高品质新品种,从而显著提高农作物产量、品质和档次。中国从1987年8月5日发射的第9颗返回式卫星首次搭载的青椒、小麦、水稻等一批种子 Space breeding is to plant seeds or branch buds in the return spacecraft, the use of space micro-heavy ions, a variety of cosmic rays, large alternating magnetic field and short-term overload and other factors, mutation of the seed gene to obtain high-quality new varieties, Thus significantly improving crop yield, quality and grade. A batch of seeds such as green pepper, wheat and rice first carried by China from the 9th returnable satellite launched on August 5, 1987