I. Treasury disinfection The CT-efficient depot disinfectant developed by the National Agricultural Product Preservation Engineering Technology Research Center is a fumigant and has a kill rate of more than 90% for Botrytis cinerea, Penicillium, Rhizopus, and Aspergillus niger and is easy to use. Safety, small corrosion of the metal and other characteristics, the amount of 5 grams / m3. 2. Fresh-keeping materials 1 Packaging: Fresh-keeping packaging boxes used for storage of Red Globe grapes should be loaded with 5kg or less of the amount, and a layer of fruit should be suitable. The materials include wooden boxes, cartons and plastic boxes. 2 storage bag: When choosing the bag, pay attention to use Red Globe special PVC or PE air permeable bag. This kind of bag has the advantages of light condensation or even no condensation, little change in grape quality, better green retention performance of fruit stems, etc. However, PVC bags are difficult to open, so they should be purchased about one month in advance. Bag leak test. 3 Preservatives: Research shows that Red Globe grapes are more sensitive to SO2, so CT composite preservatives should be used, including CT2, CT1, and moisture-proof plastic wrap, with a dose of 7 packets of CT2 and 1 packet of CT1 per 5 kg of grapes. 1 Zhang moisture-proof plastic wrap. 3. Agricultural technical measures before Red Globe grape storage 1 Fertilization and irrigation: Therefore, pay attention to fertilizer types, apply more phosphorus and potassium fertilizers and trace fertilizers, apply more organic fertilizers, and control the amount of nitrogen fertilizers. Red Globe grapes are suitable for arid and semi-arid climatic conditions. In particular, pre-harvest irrigation has a great influence on grape storage. Red Globe grape orchards should stop irrigation 10-15 days before harvesting, and postponing mining should be delayed if there is rain before harvesting. Received. 2 Spraying: Red Globe grape has poor disease resistance, especially against black pox, gray mold, anthrax, etc. Therefore, the fruit bagging is the best method to prevent the diseases of the ear and the pesticide pollution of the fruit. Another reason for advocating the Red Globe grape fruit bagging is that the variety has a dark color in the maturing season in the northern region due to the low temperature and large temperature difference between day and night. The color of the fruit is dark purple or dark purple. Red. The use of fruit bags that have not been sterilized and have no disease-preventing function will cause the fruit in the bags to infect or be subject to a large number of pathogens such as gray mold and anthrax. It is recommended that growers use Red Globe special fruit bags. Diseases in the field such as gray mold are also the storage diseases of the highest incidence of Red Earth species. The disease has begun to lurk in the inflorescence before flowering. Pre-flower disease prevention is one of the key technologies for the preservation of the Red Earth. 3 Yield control and fruit thinning and fruit thinning: The yield is too high. The grape flesh has low hardness and low sugar content. It is perishable during storage and poor in storage quality. IV. Harvesting and post-harvest treatment Grapes used for storage shall be fully dried in the morning and then harvested. The Red Earth-specific anti-corrosion and preservative agent (food additive type) should be sprayed 2 days before harvest and harvested. Use, can get better storage effect. Red earth varieties are not resistant to SO2, and the use of preservatives before harvest is one of the key technologies for prolonging the storage period and preventing mildew during storage. Grape berries are particularly prone to mechanical injury. Therefore, they must be handled gently during harvesting, packing, transportation, and storage to avoid or reduce the damage caused by bumps, squeezing, friction, and vibration. During the harvest, the most hanged use of hand-pulled fruits and boxes, grape after harvest should immediately remove sick, injured, green, small fruit, put the ear gently in a special storage bag lined with PVC or PE grapes Inside the box, it should be transported to the pre-cooling room immediately after packing. It is advisable that the grapes receive pre-cooling for no more than 12 hours, and the faster the pre-cooling, the better. V. Rapid pre-cooling and storage After the grapes are transported to the pre-cooling room, the bags should be opened at -1°C to -2°C for pre-cooling so that the grape's product temperature will drop as soon as possible. When the fruit temperature drops to 0 within 24 hours °C, put the preservative into the bag according to the requirements, use double-layer paper to put the preservative on the grape, the effect is better. Then close the bag and store it at -0.50.5°C. In order to prevent the damage caused by the release of preservatives from Red Globe grapes and the pre-mildew, it is one of the key technologies for the storage of red earth varieties to establish a pre-cooling warehouse to prevent condensation in the later period. Sixth, the use of preservatives and the use of methods: Red Globe grape must use a single-layer box, after pre-cooling wait until the fruit temperature reaches 0 °C before they can start putting fresh preservatives. Red earth varieties are not resistant to SO2 preservatives, and are susceptible to storage diseases such as gray mold in the field. Therefore, under the premise of ensuring fruit temperature of 0°C and preventing condensation, compound preservatives are used, and the dosage per 7 kg is 7 packs. Tablet preservatives (2 tablets/bag, 0.5 g/tablet) plus 1 kraft-wrapped fresh-keeping pad (6 packs of medicament). The method of use is as follows: firstly, put a piece of strong hydrophobic paper on the top of the grape, the length of the paper is >30cm, and the width is >20cm. Put 1 piece of kraft paper fresh-keeping pad on the top of the pad, and then use the pin for each piece of the tablet preservative. ) Twist two translucent eyes, 7 packs of tablet preservative on the top of the fresh-keeping pad, and then cover it with pad paper to ensure the uniformity of drug release. VII. Storage management 1 Temperature management: Keep the storage temperature -0.50.5°C during storage. Keep the storage temperature stable. The fluctuation of the storage temperature should be less than 0.5°C. The fluctuation of the storage temperature can cause condensation in the bag. Causes fruit rot and phytotoxicity. 2 Ventilation and ventilation: Although the respiratory metabolism of Red Globe grapes is low at low temperature after harvest, ventilation of the warehouse during storage is still very necessary. Ventilation is beneficial to the storage of Red Globe grapes. 3 During the storage process, always check the storage condition of the grapes. If grape stems have been found to have dried up, browned, rotted, or have a heavier phytotoxicity, they must be sold in time.
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