稻瘟病是水稻三大流行病害之一 ,其防治方法目前仍以化学药剂保护为主。农业可持续发展迫切需要用经济有效、环境相容性的防治方法 ,代替对环境有着诸多负面影响的杀菌剂。抗病育种虽然是其中一个途径 ,但为获得稳定抗病性水稻品种所进行的杂交、回交及后代选择等过程相当费时 Rice blast is one of the three major epidemic diseases of rice, and its prevention and cure method is still dominated by chemical protection. Sustainable development of agriculture urgently requires the use of cost-effective and environmentally compatible methods of prevention and control to replace biocides that have many negative impacts on the environment. Although disease-resistant breeding is one of the ways, the process of hybridization, backcrossing and future generations selection for obtaining stable and disease-resistant rice varieties is quite time-consuming