安徽淮北是七十年代发展起来的油菜新产区。近几年虽然油菜栽培面积不断扩大,单产和保收率也有所提高,但产量不够稳定,几乎每年都有一定的废弃面积。其所以如此,冻害则是主要的障碍因素。笔者几年来对影响淮北油菜安全越冬的气象因素及冻害防御措施作了如下的初步探讨。 Huaibei in Anhui Province is a new rapeseed area developed in the seventies. Although rapeseed cultivation area has been expanding in recent years, yield and yield have also risen, but the yield is not stable enough, and there is a certain amount of abandoned area almost every year. This is the case, frost damage is the main obstacle. In the past several years, the weather factors affecting the winter overwinter of Huaibei rape and the frostbite prevention measures have been preliminarily discussed as follows.