Three methods of storage and preservation of fresh peach
Refrigerated. Peach is easy to suffer from freezing injury in low temperature storage, and there is a risk of freezing at-1 ℃. Therefore, the suitable storage temperature of peach is 0 ℃, and the suitable relative humidity is 90%-95%. Under this storage condition, peaches can be stored for 3-4 weeks or more. However, when the peach is stored at low temperature for a long time, the flavor will gradually fade, and the long-term cold storage will cause freezing injury and browning of the flesh, especially when the peach is ripe in the high temperature environment, the pulp will become dry, spongy and soft, and the pulp around the core will brown obviously. The use of small plastic film packaging in the cold storage can prolong the storage life.
Controlled atmosphere storage. Peach can be stored for 6-8 weeks or more under 0 ℃, 2% oxygen and 5% carbon dioxide, and can reduce low temperature injury. If the sphene soaked in saturated potassium permanganate solution is added to the modified atmosphere account or controlled atmosphere bag, the effect of absorbing ethylene is better.
Low temperature combined with simple atmosphere control and anticorrosion measures. Put eighty-nine mature peaches into cartons or bamboo baskets lined with non-toxic PVC film bags or polyethylene film bags, or directly into the above bags without wrapping paper, and precool immediately. After the fruit was cooled, a certain amount of sec-butylamine fumigant, ethylene absorbent and carbon dioxide remover were added to the bag to tighten the bag, seal the box and palletize, so that the storage temperature was kept at 0: 2 ℃. Okubo and Baifeng peach stored for 50-60 days had a good fruit rate of more than 95%, basically maintaining the original hardness and flavor. Soaking the fruit with the mixture of 100 ~ 1000ppm benzoate and dichloronitroaniline 450~900ppm after harvest can prevent brown rot and soft rot. Fumigation with sec-butylamine requires 0.05-0.1 ml sec-butylamine per liter. When in use, you can stick the liquid to the cotton ball, and then hang the cotton ball in the library, account or bag.
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Control of brown spot perforation of peach leaves
Occurrence rule: The pathogen overwinters mainly by mycelium on diseased leaves or diseased tissues of injured branches. The following spring, with the rise in temperature and the arrival of rain, the pathogen produced conidia. Conidia spread by wind and rain, infecting leaves, shoots and fruits. The disease occurs more seriously in low-lying, poorly ventilated, cloudy orchards or rainy years. Control methods: (1) Agricultural control: reasonable pruning. Make orchard ventilation and light transmission good, reduce the humidity of peach orchard, create unfavorable conditions for disease occurrence.
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Aidan pear
Source of variety: originally from Japan. Characteristics: the fruit of this variety is large, the single fruit can reach 1-2kg, the pericarp is brown and yellow, the flesh is fine, juicy, sweet, resistant to storage and transportation, and the ripening period is in the first and middle of October. Aidan pear bears early and high yield. Two years after planting, the flowering plant rate was more than 95%, and the plant yield could reach 25-50kg. Key points of cultivation: because the tree potential is medium and short fruit branches are easy to occur, high density cultivation is required to ensure the population to increase production. Although the self-flowering seed setting rate of this variety is high, it is best to plant it.
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