Red Globe Grape is a grape variety that is highly resistant to storage and transportation. However, this species is relatively sensitive to sulfur dioxide. Therefore, if blindly emulating the preservation and storage technologies of popular grape varieties such as Kyoho, Longan, and Rose, it can easily cause storage failure. According to our many years of research, using the following technologies, we can obtain good results for more than 180 days of storage. First, the pre-harvest agricultural technology The quality of grapes has a very important relationship with the quality of grapes before harvest. Only high-quality grapes can be quality after storage. 1. Fertilization, irrigation. Nitrogen fertilizer can not be too much. Red Globe grapes are suitable for arid and semi-arid climatic conditions. Therefore, irrigation should be stopped 10 to 15 days before mining; if it is raining before harvesting, harvesting should be delayed. 2. Spraying medicine. Red Globe grape is not resistant to disease and is not particularly resistant to blackpox. Attention should be paid to prevention and control. In addition, fruit bagging is the best way to prevent disease in the ear and prevent pesticide contamination of fruits. 3. Yield control. The yield is too high, the grape pulp has low hardness, low sugar content, and it is perishable during storage. Appropriate production should be controlled at 1/15 hectares of 1500 kg. 4. Harvesting and post-harvest processing. Grapes used for storage should be harvested in the morning dew for a long time. Before harvesting, liquid grape preservatives should be sprayed on the ear and harvested after drying. Or harvested grapes directly dip fruit with liquid grape preservatives, will have better storage effect. Harvested grapes immediately cut sick, blue, small, mechanically damaged fruit. Gently place the pre-cooling inside the box lined with PVC or PE grape bags. Grapes received precooling from the harvest for 12 hours. The faster the better. Second, storage technology and technical points Storage conditions. The suitable storage temperature for Red Globe grapes is -0.50.5°C and relative humidity is 90%-95%. In this condition, add preservatives. 2. Warehouse disinfection and cooling. In order to prevent the re-contamination of the grapes after storage, the warehouse must be completely sterilized with an efficient depot disinfectant before the grapes are stored. Stored cold storage can use micro energy-saving cold storage. This kind of cold storage has the characteristics of rapid cooling, stable temperature, and uniform temperature distribution inside the warehouse, which is suitable for the needs of self-producing and self-storage in rural China. The temperature should be reduced to -2°C 2 days before storage. 3. Fresh materials. Fresh-keeping containers used for storage of red earth grapes should be loaded with 4 kg and 1 layer of fruit should be suitable. The storage bag used for storage of grapes has two functions: one is to maintain a certain humidity in the storage environment, to reduce the loss of moisture in the grape, to prevent dry mold and threshing, and the other is to maintain a suitable gas composition in the storage environment and suppress fruit The metabolic activity and microbial activity maintain the original quality of the fruit and the bright green of the fruit stem. 4. preserver. According to our many years of research, the variety should use CT composite preservatives. 5. Rapid pre-cooling and storage. After the grapes are transported to the cold storage, the bags are opened and pre-cooled at -1 to -2°C to reduce the temperature of the grapes as soon as possible. When the temperature dropped to 0°C, the preservative was placed in a bag, and then the bag was tightly stored at -0.55°C for a long period of time. 6. Management during storage. 1 Temperature management: Keep the storage temperature -0.50.5°C during storage to keep the temperature stable. 2 ventilation: ventilation is conducive to the storage of Red Globe grapes. Ventilation should pay attention to the choice of time, ventilation should be selected when the temperature difference between the inside and outside the library is small, to prevent the library temperature fluctuation greatly. When the outside air humidity is high, the following rain or fog days should not be ventilated. In addition, during the storage process, the storage condition of the grapes should always be checked, but it is better not to open the bag for inspection. If you find that grape stems have begun to dry, the fruit becomes brown, rot or there is a serious injury when a timely sale.
Dehydrated potato is an indispensable vegetable in daily life and diet. Potatoes have high nutritional value and low price, and are the favorite food of the masses. Dehydrated potatoes should be selected with large tubers, smooth surface, thin skin, shallow and few bud eyes, white or light yellow flesh, dry matter not less than 21%, and starch content not more than 18%. Rose, Castle Peak, Triumph and other varieties are appropriate.
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