The invention relates to the technical field of preservation of picked fresh
cut flowers, and discloses
delphinium grandiflorum
cut flower pre-treatment liquid as well as a preparation method and application thereof. The pre-treatment liquid is prepared from the following components in percentage by
mass / volume: 200 to 300 mg / L of 8-hydroxyquinoline, 250 to 450 mg / L of
citric acid, 25 to 45 mg / L of
silver nitrate, 400 to 800 mg / L of aluminum
sulfate, 25 to 45 mg / L of
silver thiosulfate and 1.5 to 3.0 mg / L of 1-MCP; the concentration of the Tween-20 is 0.4%-0.8% by volume, the problems that petals of
delphinium grandiflorum
cut flowers fall off, flower color fades, stalks are bent and the like due to
ethylene sensitivity and
catheter blockage are solved through the synergistic effect of the multiple components, the
bottle insertion time is prolonged to 24-28 days, and the yield of the
delphinium grandiflorum
cut flowers is improved. The invention further provides an efficient and stable pretreatment liquid preparation process for ensuring the stability and permeability of components and a simplified
pretreatment method, and is suitable for fresh cut flower manufacturers, logistics enterprises and terminal retailers. The contradiction between high
toxicity of AgNO3 (reduced by 35% compared with that of an early-stage formula) and low stability of STS in a traditional formula is solved. The invention further provides an efficient and stable pretreatment liquid preparation process for ensuring the stability and the permeability of the components, and the
pretreatment method is suitable for fresh cut flower manufacturers, logistics enterprises and terminal retailers.