切花保鲜即采用物理或化学方法维持花卉鲜活程度,延长离体花卉寿命。这对提高切花的观赏价值具有重要意义。一、切花保鲜原理 1.切花离体后,缺少根系对水分和无机盐的吸收,而枝叶的蒸腾和养分的需求仍在继续,因此保持切花水分平衡和养分供应是保鲜的首要问题。人们常采用以下方法:①在切花基部斜切,增大吸水面积,避免气泡、杂质等引起导管的物理性堵塞;②在保鲜剂中加 Cut flowers that use physical or chemical methods to maintain the freshness of flowers, to extend the life of isolated flowers. This is of great significance to improve the ornamental value of cut flowers. First, the principle of fresh cut flowers 1. Cut flowers in vitro, the lack of root absorption of water and inorganic salts, and the leaves of the transpiration and nutrient needs continue, so to maintain cut flower moisture balance and nutrient supply is the primary issue of preservation. People often use the following methods: ① cut at the base of cut flowers, increasing the water absorption area, to avoid air bubbles, impurities, etc. caused by catheter physical blockage; ② Preservatives plus