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进入冬季,气温逐渐下降,尤其今年1月下旬,南方各省均出现了低温极值,对油菜生产带来了严重损失。如果管理不当,油菜发生的冻害迟迟得不到补救,损失会更大。油菜的冻害有多种类型,应分别采取相应的补救措施,确保油菜高产丰收。油菜冻害的类型。1.油菜的湿型和干型冻害。油菜越冬期一般从12月份到下年2月份,共90天左右的时间,如果这段时间阴雨天较多,气温在9℃以下,甚至0℃以下,土壤的湿度较大,如果遇上冰冻天气,油菜极易被冻坏,这是湿型冻害;
Into the winter, the temperature gradually decreased, especially in late January of this year, the southern provinces have appeared in the extreme low temperature, rapeseed production has brought serious losses. If improperly managed, the delayed freezing of rape can not be remedied, the loss will be even greater. There are many types of rapeseed injury, should take appropriate remedial measures to ensure high yield rapeseed harvest. Types of rape frost damage. 1. rape wet and dry type of cold damage. Overwintering rape usually from December to February next year, a total of 90 days time, if more rainy days during this time, the temperature below 9 ℃, or even below 0 ℃, soil humidity, if the case of frozen Weather, rape can easily be frozen, which is wet-type frost damage;