Prevention and control of fruit shrinkage disease of jujube
The occurrence of jujube fruit shrinkage disease is positively correlated with the density of piercing sucking insects, and the disease is often prevalent due to high atmospheric humidity, especially in intermittent rainfall or continuous overcast days.
Prevention and control methods:
If the susceptibility index of ① is relatively high last year, we should first clean up the fallen leaves and fruits in the jujube orchard and concentrate on treatment so as to cut off the source of transmission.
② strengthens the fertilizer and water management of jujube orchard and improves the resistance of trees. For older trees, scrape and burn the old bark before sprouting, and spray stone-sulfur mixture on the whole tree.
Chemical control of ③: fungus No. 1 was sprayed with 800x solution or streptomycin sulfate solution 6500 times to kill pathogens for the first time at the end of June and every 10 days from the end of July to early August.
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Production of raw canned snow pear
Canned raw snow pear is a canned variety with white color, sweet and sour taste, crisp tissue and rich flavor. Compared with the traditional cooked process, the raw assembly process can reduce steam consumption by 30%, pear consumption by 10%, ton cost by 5%, and pulp brittleness by 80%. (1) acceptance of raw materials → cleaning → folding, peeling → slicing, seed nest → dressing, → sorting, → canning, → juice injection, → exhaust, sealed → sterilization, cooling → storage (2) production method 1
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The fresh-keeping of pear fruit is different from that of others.
In general, early-maturing varieties are not resistant to storage, while mid-late-maturing varieties and white pear varieties (such as Yali pear) are more resistant to storage. The storage temperature of pears is generally-1 ℃ ~ 3 ℃, and the relative humidity is 90% ~ 95%. Yali pear, Xuehua pear, ci pear and Changba pear are very sensitive to carbon dioxide and hypoxia, so they are not suitable for controlled atmosphere storage. Beware of losing water pear fruit contains more water during storage, once the water loss is serious, there will be rotten spots, rotten fruit or empty dried fruit. Therefore, attention should be paid to adding libraries.
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