1975年于我省稻瘟病区的湘西自治州农科所对二九南一号A×ⅠR661、二九南一号A×ⅠR26等14个组合的杂交水稻在晚稻田间进行自然诱发抗稻瘟病鉴定,据初步鉴定结果,上述14个组合在晚稻苗叶稻瘟流行期间均未发现感染型病斑,属抗叶稻瘟类型。但对穗颈稻瘟其抗病性却有明显的差异,其中高抗穗颈稻瘟的有BTA×红早糯、 In 1975, Hunan Academy of Agricultural Sciences, Xiangxi Autonomous Prefecture of Hunan Province, naturally induced resistance to rice blast in hybrid rice of 14 combinations, such as A × ⅠR661 and A × ⅠR26, According to preliminary identification results, the above 14 combinations were not found in the late rice blast leaf blight epidemic lesions, is an anti-leaf blast type. However, the disease resistance of panicle blast had obvious differences, of which panicle blast resistant BTA × Hongzao waxy,