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What are the key technical points for post-harvest management of jujube trees?
1. Apply fruit-harvest fertilizer well. Apply fruit-harvest fertilizer once 3-4 days before harvest or 5-7 days after harvest. Generally apply 50-60 kg of organic fertilizer per jujube tree, applying it by the trenching method at the base of the main trunk of the jujube tree, and cover with soil immediately after application. 2. Spray quick-acting fertilizer. Immediately after harvest, spray 0.3-0.4% urea solution and 0.4%-0.5% potassium dihydrogen phosphate solution on the leaves to avoid leaf drop, improve photosynthetic efficiency after harvest, accumulate and increase tree nutrients, promote more flower bud differentiation, and reduce
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Control Methods and Technical Key Points for the Jujube Mealybug on Jujube Trees
(1) Manual and physical control. Bark scraping: During winter and early spring, scrape off the old coarse bark on the trunk, branches and forks and burn it in a centralized manner; spray the whole tree with 3-5 degrees Baume lime sulfur mixture, or apply a sticky insect glue ring about 1-2 cm wide on the main trunk and branches, to prevent the insects from climbing up the tree and from moving from concentrated overwintering branches to non-concentrated overwintering branches to cause damage, and to trap and kill some of the pests. (2) Chemical control. The application time should be chosen during the peak hatching period of the newly hatched nymphs, generally from late May to early June, early to mid-July, and early September. The selected pesticides include: 25% buprofezin
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Post-harvest management of peach trees must be done promptly, and sooner is better than later
Pruning to promote balance. Peach trees grow multiple times a year, which easily makes the canopy dense, with poor ventilation and light penetration, affecting flower bud formation. Therefore, after harvesting peaches, the crossing branches, overlapping branches, diseased and pest-infested branches within the canopy, and the vigorous water sprouts in crowded areas should be thinned out. For bare and empty areas, ringing (girdling) should be done to promote new shoots to fill the space and increase next year's yield. Thorough orchard cleaning and emphasis on prevention. Combined with shaping and pruning, clean up the peach orchard, remove the pruned branches from the orchard, and at the same time spray once with Jinlishi 6000x solution, 40% Guolong 12000x solution, and amino acid 3
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Technique for Top-Grafting Mixed Pear Trees to Nanguo Pear in Western Liaoning
1. Re-grafting. Whether a mixed pear top-grafted to Nanguo pear has survived can be determined 20 to 25 days after grafting. On surviving Nanguo pear scions, the bark remains green, and the buds begin to sprout; those that have not survived show shrunken, dried bark. Re-graft those that failed as soon as possible: in spring, cut off the dead stub and then cleft-graft; in summer, after the bark slips, green-wood bark grafting can be used. After re-grafting, cover promptly with paper bags to aid survival. If plastic bags are used, the high outside temperature can easily cause the scions to lose water. 2. Unbinding. After spring cleft grafting or side-veneer grafting, the new
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Detailed Explanation of Key Techniques for Transplanting Large Suckling Pear Trees
1. Selection of trees for transplanting Any pear tree without serious pests or diseases can be transplanted, but practice has shown that selecting younger trees (under 20 years old), with lower trunks and relatively complete crowns, results in a higher survival rate. 2. Treatment of trees for transplanting Before transplanting, saw off diseased and pest-infested branches, branches positioned too high, excessively dense large branches at the base, and transitional branches between layers, while appropriately retaining lower scaffold branches, small branches under 2 years old, and branches in better positions. In September, root pruning should be carried out on the large trees to be transplanted, so that they form callus tissue
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How should date lice on jujube trees be treated?
Date lice are what is known in production as the tortoise wax scale and scale insects. Because the adults form a waxy shell, spraying pesticide makes it very difficult to achieve efficacy, so in winter the infested branches can be pruned off, or water can be sprayed on the branches and, after it freezes, the branches can be beaten to shake the adults off. The peak of larval occurrence is generally from late June to early July; because at this time the waxy shell has not yet formed on the insect bodies, the larvae have poor resistance to pesticides, and this period is the best time for control. Ordinary insecticides can all achieve very good results. By persisting with this for 2-3 years, very good control results can be achieved.
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Detailed Explanation of the Key Operational Points of Top Grafting Technology for Jujube Trees
Due to variation arising from long-term cultivation of varieties, the quality of jujube trees currently planted in various regions differs considerably. In the case of the golden silk jujube (Ziziphus jujuba 'Jinsixiaozao'), there are dozens of phenotypes in Jinghai, Tianjin alone, and the size and shape of their fruit vary greatly; determination of their contents has shown that the differences are also considerable. The harvested jujube products have poor uniformity in appearance. This greatly lowers their commercial price and reduces farmers' economic income. To effectively solve this problem and make the fruit of the same jujube orchard attain uniformity
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Detailed planting points for Pot Jujube No. 3, teaching you how to grow potted jujube trees well
1. Strong early fruiting and high yield: In the small environment of planting in a flower pot (note: the inner diameter of the flower pot mouth should be about 35 cm-40 cm, and the pot depth should be about 28 cm), about 70 fruits set in the same year, 216 fruits per plant in the second year, and the average fresh jujube yield per plant reaches 4.3 kg. 2. Fruit characteristics: The fruit is long cylindrical, with an average fruit weight of 20 g and a deep red peel. 3. Taste and quality: The flesh is fine and crisp, rich in juice, strongly sweet in flavor, slightly sour, with a sugar content of 28%, and the quality is excellent.
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Key points of pruning techniques for jujube-grain intercropping trees
In the jujube-producing areas of northern China, the practice of jujube-grain intercropping has long been customary, and it is a good way of producing jujubes and grain in plain regions. Jujube trees intercropped in grain fields should not be planted too densely, and the trunk should not be too low; a planting density of 150-210 trees/hectare and a tree height of about 6 m are appropriate. In this way, the light received by the grain field is only 1.2%-2.2% less than that of a pure grain field. According to the characteristics of jujube-grain intercropping, in order to give play to the yield-increasing potential of jujube trees, apart from trunk height, a sparse tree form is preferable, so as to maintain strong light for the crops under the trees
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High economic returns from intercropping apricot trees with Chinese medicinal herbs
In recent years, farmers in the rural areas around Luoyang, Henan, have adopted the "forest-medicinal herb intercropping" method to plant trees and grow medicinal herbs, becoming wealthy through both the "forest" and the "medicinal herbs." The soil in the Luoyang area is very high in potassium, so the kernel apricot, a potassium-loving plant, finds the necessary soil conditions to grow there. Moreover, the light, heat and moisture conditions here all suit the growth requirements of kernel apricot. Kernel apricot is cold-tolerant, light-loving and tolerant of poor soil, making it suitable for planting on semi-arid hilly slopes. After planting, kernel apricot can bloom and bear fruit in two to three years, and in four to five
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