Sheng xiang jing 4 bred with soft -X - ray radiation was characterized by short stem, good quality, high yield, which had brod spectrum of resistance to more than 98. 86% of tested rice blast strains.

• 应用软X射线辐射选育的矮秆、优质、高产水稻新品种申香粳4号抗稻瘟病菌谱广，在所测的88个菌株中（分属于7群24小种），能抵抗87个菌株中，抗菌株率达98．86%25。