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花椰菜(又名花菜)营养丰富,风味独特,是蔬菜淡季的主要品种之一。近年来,我省种植面积迅速扩大。但由于它是二年生植物,当年出现花球,翌年收获种子。开花结荚期的适宜温度为20℃左右,而本省适时播种的早熟花菜的开花期正值严寒季节,植株受冻或花而不实,难以留种。过去曾有人应用早熟花菜移栽法留种,即在花球充分成熟时挑选原品种特性优良的植株,移入温室加温或不加温栽培,此法留种,根系损伤严重、成活率低、病害重、长势弱、结荚少、产量低、
Cauliflower (also known as cauliflower) nutrient-rich, unique flavor, is one of the main varieties of vegetables off-season. In recent years, the planting area of our province has expanded rapidly. However, since it is a biennial plant, flowers appeared in the year and the seeds were harvested the following year. The optimum temperature for flowering and podding is about 20 ℃, while the flowering period of early-flowering cauliflower sown timely in this province is in the cold season. In the past, some people used the method of early-maturing transplanting of cauliflower, that is, selecting the plants with excellent characteristics of the original cultivars when they were fully matured, moving them into the greenhouse with or without heating cultivation, Heavy disease, growing weak, less pod, low yield,