Postharvest treatment of tulips

Flower growers pay more attention to cultivating high-quality products, but do not pay much attention to harvest and postharvest treatment. So as to make the previous work worthless. To this end, I wrote this article. When harvesting the dewy bud, the plant stores nutrients in its stem for its flowering. If the plant is harvested before it is too mature, the nutrients in its stem will not be stored enough, so it will not be possible to bring the desired effect to future consumers. By using the method of ball harvesting, the bud can continue to get nutrition for a period of time. The plant should be kept dry during harvest in order to prevent the growth of Botrytis cinerea. Because the spores of Botrytis cinerea can only germinate in water, so: harvest 1. 1 to 2 times a day. This can improve product consistency. 2. Harvest at an appropriate stage and, if necessary, with balls. 3. When the plant is dry. The harvest time is delayed sometimes, the harvest time needs to be postponed. We can do this by lowering the temperature in the greenhouse to 5 ℃. This method can be carried out at any stage of crop growth, but for a maximum of 7 to 10 days. After lowering the temperature for a period of time, the temperature is raised to a normal level. However, the decrease of temperature will lead to the increase of relative humidity in the greenhouse. We can use ventilation and other measures to reduce the relative humidity to less than 80%. When the temperature of the product is quickly reduced to 1 to 2 ℃ and the plant is removed from the supply of water, nutrients and hormones, ethylene, bacteria, fungi and other contaminants are more likely to cause problems at the knife edge. Appropriate temperature and humidity can effectively prevent or reduce the occurrence of many problems. Therefore, it is very important to reduce the product temperature to 1 to 2 ℃ as soon as possible. When the temperature of the harvested tulips reaches this standard, they can be taken out and tied up. Under these conditions, the respiration of the plant is limited, so that the few nutrients preserved can also be provided to the plant. At the same time, it also limits the transpiration of plants, so that plants do not become soft, and the transport of nutrients is not hindered. Maintaining high relative humidity in the cold storage can also prevent the plant from drying up. But it should be noted that there should be a small amount of air flow to prevent the formation of free water on the plant. In free water, the spores of Botrytis cinerea may begin to grow, causing disease spots of Botrytis cinerea. When storing, it is best to stack the tulips vertically to prevent the stem from growing and bending. So cool down: after harvest, lower the product temperature to 1 to 2 ℃ as soon as possible. Placement: place vertically in the storeroom, do not stack too much. Provide: a small amount of air flow. Wait: after the temperature of the product drops, proceed to the next operation step. Grading according to quality and length: grading strictly according to the requirements of quality and length, which can add added value to the grower-wholesaler-consumer chain. When binding, the top of the bud should be on the same horizontal line, the rubber band should not be tied too high, the packaging can not cause damage to the leaves. So remove the ball: use a special machine or knife to remove the seed ball attached to the plant. Grading: according to the quality and length of the flowers. Control: the difference in length between the branches of each bouquet should not exceed 3 to 5 cm. Keep: the top of the bud is on the same level. Prevent: damage to the leaves. Trim and put in clean water for 30 to 60 minutes, the harvest will always cause some water loss. In order for the plant to enter the sales chain in a good state, the flowers can be pruned and placed in cold water (1 to 2 ℃) for 30 to 60 minutes. Obviously, not only should the water for the flowers be clean, but the vase or vase must also be clean (free of bacteria and sediment). A sharp knife should be used when trimming so that the vascular bundles used to transport water will not be damaged. So trim: use a sharp knife after binding. Placement: the container where the tulips are placed should be clean and placed in cold water for 30 to 60 minutes. Maintained at 1 to 2 ℃ until delivery, processed and placed in cold water, tulips are still separated from water, nutrients and hormone supplies. Appropriate temperature and humidity can prevent or reduce some problems at this stage, so store: tulips are placed vertically in a 1 to 2 ℃ environment. Provide: a small amount of air flow in the storeroom to prevent the occurrence of gray mold on the product. Storage should not exceed 1 to 2 days. It is clear that even under the best conditions, the longer the tulips are stored, the more harmful they are caused by dryness, lack of nutrition, ethylene and germs. Therefore, the shorter the storage time, the better. If you want to spend the weekend, you should bring the ball so that the material in the seed ball can continue to be transported to the plant. So dribble: on weekends, store tulips with the ball. Storage: do not exceed 1 to 2 days. Maintenance: the temperature is also maintained at 1 to 2 ℃ at the time of shipment. Tell others: finally, we hope you can tell your customers the right way to take care of tulips. So tell your customers what they need to do and remember in the post-harvest processing section. They are: transportation and storage temperature at all times are 1 to 2 ℃. The flowers should be trimmed and placed in 1 to 5 ℃ of water for several hours after the flowers arrive. Do not place any fruit or products or machines that may produce ethylene near the tulips. Tell the customer to put the flowers in a warm room and not to let the sun shine directly. Light will reduce the vase period.