What are the new technologies for preserving cut tulips?

Harvesting stage: For Darwin varieties, cut when the flower bud is half colored and half green; for other varieties, cut when the entire bud is colored. Tulips should be cut several times a day, which makes the cut flowers uniform and gives them the best postharvest life. Storage and transport conditions: Cut tulips can be stored dry or wet for short periods. Varieties with a short postharvest life (such as Apollo) can be stored wet in water at 3°C for 3 days, or stored dry at 0-1°C for 6 days; varieties with a longer life (such as Aladdin and others) can be stored for about 3 days longer under the same conditions. Cut flowers pulled from the soil with the bulb attached can be stored even longer. Tulips should be placed upright during storage to prevent the flower stems from bending. When storing dry, the stems should be wrapped tightly, then placed horizontally. The cut flowers are packed in moisture-retaining boxes and shipped dry at a temperature of 1°C. The cut flowers should be placed upright, and the packaging should be loose to avoid excessive carbon dioxide accumulation harming the cut flowers. After the cut flowers reach their destination, if the stems are bent, they can be wrapped in wet paper to straighten them, inserted in water, and lit from above to make them straight. Sensitivity to ethylene: Tulips are relatively insensitive to ethylene, but after ethylene damage, the buds do not open, the petals turn blue, and aging accelerates. Preservative treatments: (1) Reducing the phototropic bending of cut flowers: After harvest, the cut flowers grow quickly in water, and phototropism makes the stems bend; try using 25 mg of ancymidol or 50 mg of ethephon per liter to slow this process. A solution containing 50-100 mg of ancymidol per liter can also be sprayed on the cut flowers. (2) Vase preservative solution: try a mixture containing 50 g of sucrose, 300 mg of 8-hydroxyquinoline citrate, and 50 mg of chlormequat (CCC) per liter, or 10 mg of benzalkonium chloride, 25 g of sucrose, and 10 mg of calcium carbonate per liter. Vase life: about 5-10 days, depending on factors such as environmental temperature and humidity. Cut flowers are sensitive to gray mold, so disease prevention should be noted. Note that tulips cannot be placed in the same vase as cut daffodils.