萝卜是半耐寒作物,正常生长为二年生,即第一年为营养生长阶段,第二年转入生殖生长阶段(抽薹、开花、结实)。萝卜原产于温带,在低温条件下,萌动的种子,植株(幼苗)及肉质根都可能通过春化阶段。在长日照条件下即可抽薹,萝卜当年播种当年就抽薹,则是早期抽薹,它影响了肉质根的形成,丧失产量,降低了生产者的经济收入。 Radish is a semi-hardy crop that normally grows into biennials, ie the first year is the vegetative growth stage and the second into the reproductive growth stage (bolting, flowering, fruiting). Radishes are native to temperate zones, and germinating seeds, plants (seedlings) and fleshy roots may pass through the vernalization stage at low temperatures. In the long sunshine conditions can be bolting, radish that year seeding bolting the year, it is early bolting, which affects the formation of fleshy roots, loss of production and reduce the economic income of producers.