菊花从生产→采收→处理→商品→消费,整个过程常常遇到保鲜与预冷贮藏问题。一、切花菊缘何凋萎 1、内部因素:菊花花枝切离母体后,引起缺水、缺乏营养和乙烯产生等一系列生理失调,导致凋萎。其中缺水是主要因素。 2、外部因素:当水中的pH值为4或小于4时,可抑制细胞繁殖,降低酶的活性。此外切花寿命与水中含的盐分有关。切花菊仅在200 ppm的盐浓度下就对寿命有影响。当盐浓 Chrysanthemum from production → recovery → processing → goods → consumption, the entire process often encounter preservation and pre-cooling problems. First, why cut flowers chrysanthemum 1, internal factors: Chrysanthemum squid cut off from the mother, causing water shortage, lack of nutrition and ethylene production and a series of physiological disorders, leading to wilting. Water shortage is the main factor. 2, external factors: When the water pH value of 4 or less than 4, can inhibit cell proliferation, reducing enzyme activity. In addition, cut flower life and salt content in the water. Cut chrysanthemum affects life expectancy only at salt concentrations of 200 ppm. When salt is concentrated