上海地区,一般把“小寒”—“立春”这段时间称为油菜的越冬期,又把“小寒”时的苗势称为越冬苗势,如从常年的季节概念来说,“小寒”处于冬前与越冬的交界期,所以把“小寒”时的苗势称为“临冬”苗势似乎更确切。 油菜临冬时的苗势,对油菜的越冬、春发直至终期的农艺、经济性状都有十分密切的关 Shanghai area, the general “Osamu” - “beginning of spring” this period of time called rape overwintering, again “Osamu” when the seedling called overwintering seedling strength, as from the perennial seasonal concept, “Osamu” is in Winter before the winter and the junction of the period, so the “cold” when the seedling called “Pro winter” seedlings seem more accurate. Rape Linlin when the seedlings, overwintering rape, spring until the end of the agronomic, economic traits are very close