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宿根系黄熟时至少有三片绿叶，收获后便可再生新苗。十月初至十一月底温度逐渐下降，适合宿根稻再生苗积累过冬养份。低温是宿根稻过冬的关键因素。优良宿根系４０２０和４１５８２耐寒耐旱性强，宿根性很好。月均温５～１０℃时，根状茎和芽停止生长进入冬眠。春季温度升至１５℃时，根状茎萌发生出新苗，新苗生白根。完全不感光宿根系在夏季同一个植株上呈现幼穗分化、抽穗和穗黄熟三期同步性。感光型和弱感光型宿根稻有和其原生稻株（直接由种子长出）完全相同的营养生长和生殖生长期。
Pear root ripening when there are at least three green leaves, after harvest, renewable seedlings. The temperature gradually dropped from early October to the end of November, which is suitable for the accumulation of winter nutrients in the regenerated shoots of the RAP. Low temperature is the key factor of winter rice in winter. Good perennial root 4020 and 41582 cold and drought tolerance, good rooting. Average monthly temperature of 5 ~ 10 ℃, rhizomes and buds stop growing into hibernation. Spring temperature rose to 15 ℃, the emergence of new shoots of rhizomes, new seedlings white root. The completely non-photoperiodous root system showed symbiosis of panicle differentiation, heading and panicle ripening on the same plant in summer. Photosensitive and weakly sensitized rice plants have exactly the same vegetative and reproductive growth stages as their native rice plants (which grow directly from the seed).