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东乡野生稻苗期和抽穗开花期的耐寒性表现：比粳稻耐寒性强，尤其苗期耐寒性特强，耐寒性高１个等级。抽穗开花期在连续３ｄ自然低温（１６．９℃、１４．９℃、１６℃的日平均温度），结实率达７０％以上。抽穗结实时间直至１０月３１日，平均结实率２．５％。比籼粳稻耐寒品种结实期长６ｄ左右，但抽穗能结实正常时期与籼粳稻耐寒品种相似。
Cold tolerance of Dongxiang wild rice at seedling stage and heading and flowering stage: Compared with japonica rice, it has stronger cold tolerance, especially its cold tolerance at seedling stage and its cold tolerance is one grade higher. The heading and flowering periods were continuous at 3d natural low temperature (16.9 ℃, 14.9 ℃, 16 ℃ daily average temperature), the seed setting rate was more than 70%. Ears solid till until October 31, the average seed setting rate of 2.5%. It was about 6 days longer than that of indica and japonica hardy varieties, but the normal heading stage was similar to the hardy varieties of indica and japonica.