Crisp candied dates
The crispy jujube has high sugar content, early maturity, excellent quality, early fruit and high yield, and is one of the best varieties of jujube early maturing varieties. The variety has a wide round top and a slightly concave apex. The variety is crispy and ripe in the early stage, the white is bright red, the flesh is fine, crisp and slag-free, and the juice is more. When the fruit surface coloring area accounts for 60% of the total area, it contains soluble solids. 29.9%, vitamin C2392 micrograms / gram, the quality is superior. When the ripening period is purple, the fruit surface is bright and clean, and the edible rate is 96.5%. The nucleus is large, long oval, with 1 to 2 seeds in the nucleus. More resistant to storage, can be stored for about 30 days at minus 2 ° C ~ 0 ° C degrees.
Administration of jujube seedlings after planting 1. Do a good job of summer pruning, build early fruit and high yield tree structure. The crispy jujube saplings grow fast, but the secondary branches have relatively weak growth potential, and it is not easy to form a tree with early fruit yield. Therefore, doing good summer pruning in July-September is a key measure to fully exploit the advantages of early fruit and high yield. One is to shorten the secondary branches and promote the date of the jujube to fill the space of "missing branches". Before the first ten days of July, the saplings with the loss of the early stage, the absence of the backbone branches, and the tree shape without the early fruit and high yield were severely short-cut at the site where there was room for growth, and the second to third dates of the base were Promote the healthy jujube head. When the length is more than 50 cm, the young shoots of the jujube head are removed, and only the three jujube cranes at the base are kept, which promotes the growth of the second newborn branch and the jujube. 2. Enhance leaf function and improve nutrient level of trees. Under normal management conditions, the leaf area of the fragile candied dates is relatively small, and the leaf function is poor. It is necessary to scientifically manage soil and fertilizer water and enhance leaf function to meet the needs of early fruit and high yield. The first is to eliminate the vegetative jujube branches. For the vegetative jujube branches and competitive jujube branches that have no fruit set or fruit set, they should be removed from the base as soon as possible to improve the results of the branches and jujube light conditions and enhance the photosynthetic efficiency. . The second is to apply young fruit fertilizer. In early July, potassium sulphate compound fertilizer (effective nutrient content of nitrogen, phosphorus and potassium ≥45%) is applied according to the standard of 0.5～1 kg per plant. The fertilization method is the annular groove around the crown projection. Application, the ditch is 30 cm deep. After putting the fertilizer, the fertilizer and the soil in the ditch are fully stirred evenly. After watering, it is buried in time to avoid the occurrence of fertilizer damage and damage to the roots and branches. 3. Do a good job in flower and fruit management and promote flowering results. The crispy jujube flower has a long flowering period and a large flowering rate, and the natural fruit setting rate is 1.4% to 3.3%. The average daily temperature during flowering is above 25 °C. The key to flower and fruit management is to inhibit excessive vegetative growth. First, the tree that has not been stripped at the flowering stage and has better fruit setting should pay attention to timely removal of the new jujube head. In addition to the main branch extension branch, do not retain the extra jujube head to enhance the growth and development of the jujube crane and promote its knot. Fruit, fruit. The second is the tree that has no ringing and no good fruiting during the flowering period. It is necessary to shorten the secondary branch or remove the unsuccessful jujube hanging, and promote the jujube to sprout new jujube. When the jujube hanging flower is about 30%, spray Gibberella. 15 to 20 mg / liter of the prime, after the spray, the main branch base stripping, improve the fruit set rate of the scorpion, to make up for the lack of early production.
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