今年是大水年，据此，有关专家预测，今年可能是冷冬年。因此，防御油菜冻害更显重要。实践证明，油菜防冻除了选用抗寒性较强、高产、稳产品种外，还应采取其它措施，提高菜苗自身抗寒能力。1．早施苗肥早施苗肥可使菜苗早发根、早吸收，较好地利用冬前不太长的有效生长期内的 This year is a year of floods, according to which experts predict that this year may be a cold winter. Therefore, the defense of rape frost damage is even more important. Practice has proved that, in addition to anti-freeze rapeseed selection of strong, high yield, stable varieties, should also take other measures to improve their ability to cold-resistant seedlings. 1. As early as the application of Miao Shi Miao Shi early seedlings can make roots, early absorption, better use of winter is not too long before the effective growth period