First, the current litchi, longan results of different varieties of trees, different conditions of treatment advice 1. Premature Litchi (March Red): In the normal year of mid-late November, flower spikes are collected. To fertilize irrigation in early November, the general results of 50 kg of trees, 1 kg of compound fertilizer applied per plant, or 0.5 kg of potassium chloride, and irrigation water to keep the tree plate moist. If early flowering spikes are to be drawn in early November, they should be erased in time so that the second batch of spikes can be drawn from the end of mid-November to the end of November. 2. Middle-aged Litchi (Fengzixiao, Blackleaf, Qinzhou Red Dragonfly, Chicken Mouth, etc.): The last autumn shoots are smoked before the end of September, and are cooked before November 20th. For the last shoot whose leaves have turned green but not yet mature, we need to spray extra-root fertilizers to speed up the aging process; for those who have not yet turned green after October 1, it is estimated that they will not be able to mature on time on November 20. After cutting off from the base, the spray tip is sprayed; killing is performed on the newly picked shoots. 3. Late-maturing Litchi (Lingshan torreya, Guiwei, glutinous rice, and glutinous rice): The last autumn shoots are smoked before October 10 and cooked before the beginning of December. For the last shoot, where the leaves have been unfolded and have not yet turned green, extra-root dressing will be used to promote the accelerating aging; for the young shoots taken after October 11th, killing treatment shall be carried out. 4, longan. The last autumn shoots were smoked before October 20 and mature before the end of December. For the mid-October mid-to-mid-September days, the last tip of the current blade has been sprayed with extra-rooted dressings to speed up the aging process; for the young shoots taken out in late October, the shoots will be killed. Second, promote the old technical measures Top dressing outside the spray, 50 kg of water plus urea 100 grams, 100-150 grams of potassium dihydrogen phosphate, spray once every 7-10 days, and even spray 2-3 times. Third, control tip technology to promote flowers 1, artificial tipping. If the winter shoots have been expanded, they must be manually removed or cut off, leaving only 2 cm at the base (without leaving any leaves). 2, drugs kill tip. The winter shoots have just sprouted, and the leaves have not been unfolded or have just been unfolded. (1) Black leaf, Chinese wolfberry, Qinzhou red clam, Lingshan fragrant wolfberry: Each 30 pounds of water plus 40% ethephon 19.5-21 ml, 15% paclobutrazol 15-18 g; (2) Dendrobium: Every 30 pounds of water plus 40% ethephon 10.5-12 ml, 15% paclobutrazol 20 g; (3) Chuliang, Linglong, Dawuyuan: Every 30 pounds of water plus 40% ethephon 12-13.5 ml, 15% paclobutrazol 20 g: 3, drug control tip: the last tip has been cooked, winter shoots are not germinating trees, shoot control spray. (1) Black leaf, Chinese wolfberry, Qinzhou red peony, Lingshan citron: Each 30 kg of water plus 40% ethephon 12-13.5 ml, 15% paclobutrazol 20 g; (2) Ishigaki: Every 30 pounds of water plus 40% ethephon 9-10.5 ml, 15% paclobutrazol 20 g; (3) Chuliang, Linglong, Dawuyuan: Each 30 pounds of water plus 40% ethephon 10.5-12 ml, 15% paclobutrazol 20 g: The use concentration of ethephon should be flexibly adjusted according to species, age, tree vigor, and temperature. In general, the concentration of the tree is smaller and the tree potential is stronger. On the contrary, it is small. The tree is too weak to spray. When used, the droplets should be small, and it is advisable to spray the leaves with just a few drops of water. Avoid excessive doses and repeated spraying to avoid falling leaves. Adding 0.2% potassium dihydrogen phosphate during spraying can effectively reduce the defoliation caused by ethephon. 4, loose soil cut roots. In the canopy below the canopy drip line, loosen the soil with a hoe, and the lumps of soil do not break up. The depth is deep and shallow, and the depth is 25 cm. 5, ring cut ring. For some tree species with more vigorous tree vigor, spiral loop stripping or ring cutting can be used to control the tip. Black lobule, Qinzhou red peony, Lingshan citron, cinnamon and other spiral circumcision 1.5 laps, stripping mouth width 0.3 cm, two laps apart 4-6 cm, pericardial parts in the diameter of 5-8 cm branches, peeling cortex But as far as possible not to hurt the xylem; throat laughter can cut a circle, cut the cortex without hurting the xylem; white sugar poppy, chicken mouth and longan are more sensitive to the ring cut ring, generally not ring cut ring. The following points should be noted when taking circumcised circumcision measures: First, trees that can only thrive are tree-lined; trees with weaker vistas cannot be circumcised; and second, circumcision circumcision is the last stage of the autumn shoots. The pumping period starts at the end of November; the third is to be carried out after the autumn shoots are matured; the unripe trees in the autumn shoots cannot be circumcised and girdled; and the fourth is the measures that cannot be taken after the circumcision and groping; After the circumcision, the drug is not sprayed until the terminal buds are about to germinate and then the drug is sprayed. Sixthly, it is normal for the leaves to bleed after the circumcision and circumcision. The excision must be healed before the buds sprout, if the plants are found to be fallen or peeled. If the mouth does not heal on time, it is necessary to peel off the yellow mud or cover film to promote healing.
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