油菜的早花,是指冬种油菜在冬前或冬季提早开花,是一种不正常的开花现象。这种现象与品种特性、播种期、干旱以及营养供应状况等等条件,都有密切的关系。如果出现了早花,不加强护理,产量就会显著降低。据各地区经验总结,有些品种在早期播种条件下,往往出现早花现象,这是因为秋季气温较高,加上初冬 The early flowering of rape refers to the early flowering of winter rape in winter or winter, which is an abnormal flowering phenomenon. This phenomenon is closely related to variety traits, planting period, drought and nutrient supply conditions. If there is early flowering, without intensive care, production will be significantly reduced. According to the regional experience, some varieties of early sowing conditions, often appear early phenomenon, it is because of the higher temperatures in autumn, with early winter