充足的肥料供应,是保证花菜健壮生长的重要条件之一。在长期缺肥的情况下,花菜就会生长缓慢,缩短生长期,种菜收益降低。怎样识别花菜已经缺肥,缺什么肥?采取什么方法进行补救?下面介绍几种方法。一、缺少氮肥,表现为植株矮小,叶色淡绿并逐渐变黄,有些花菜的茎叶变为桔红色或紫红色,停止生长和早衰,上述症状出现时,应结合浇水,追施速效氮肥,如尿素、碳酸氢铵等,或用0.3％的 Adequate fertilizer supply, is to ensure the robust growth of cauliflower one of the important conditions. In the case of long-term lack of fertilizer, cauliflower will grow slowly, shorten the growth period, reduce the income of planting vegetables. How to identify cauliflower has been lack of fat, lack of what fat? What method to take remedial? Here are a few ways. First, the lack of nitrogen, manifested as short plants, light green leaves and gradually turn yellow, some cauliflower stems and leaves into orange or purple, stop the growth and premature aging, the above symptoms should be combined with watering, topdressing quick Nitrogen fertilizers, such as urea, ammonium bicarbonate, etc., or 0.3%