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Litchi should be fertilized and shredded to attack the last autumn shoot
In late September, it was the attacking and releasing period of the last autumn shoot of litchi. The leaves of the early autumn lychee began to turn green, the branches began to enrich, and the longan autumn shoots grew. According to their actual conditions, each orchard should carry out corresponding cultivation techniques and strive to cultivate a mating result that is timely and robust. When attacking the last autumn shoots, we must pay attention to the changes in the weather, because the changes in the weather seriously affect the growth of litchi and longan, and all agricultural technical measures are closely linked to the weather changes.
1. The early autumn shoots such as early-maturing litchi and red are beginning to turn green or mature, and prepare for flower bud differentiation in October. 1 Autumn shoots can be cooked in the orchard in late September or early October. If the tree is strong and the orchard is rich in water, it should be sprayed once to control the shoots, and promote the autumn shoots. Winter shoots, combined with appropriate roots, are more conducive to flowering. If the tree is moderate, and the management of fertilizer and water is general, the leaf shoots will be sprayed when the leaves begin to turn green, which promotes flower bud differentiation. 2 The last autumn shoots began to turn green in late September, and should be sprayed once before the beginning of October to promote the shoots. 3 The last autumn shoots are still growing. At the beginning of October, the leaves can not turn green trees. It is necessary to spray a high-concentration control tip (15 kg per pack) on September 20-25, causing the new shoots to stop growing. The leaves turn green immediately, ensuring that all the leaves will change color at the beginning of February, otherwise it will be difficult for the late shoots to enter the flower bud differentiation and affect flowering. 4 Since the mid-September, there has been no orchard that has not taken out new shoots. It should be sprayed to control the shoots to control the new shoots. If the plants are not treated, the winter shoots will be taken in October, which will affect the flowering. If the tree is prosperous or the orchard is full of fertilizer, it is necessary to open the fertilizer ditch and properly cut off some roots to reduce the root absorption capacity and achieve the purpose of controlling the shoots. 5 The orchard that needs to ditch the winter fertilizer is used. After the autumn shoot is mature, the trench is digging 10-20 cm inward along the drip line . The length is the same as the diameter of the crown. The width and depth are determined by the amount of fertilizer. Digging trenches should be bigger and vice versa. 6 The orchard that begins to control the shoot should be cleared. Clear orchard weeds, twigs, leaves, trees can not hide pots of water to keep the soil dry dry, which will help prevent winter shoot pumping hair. In orchards with more serious diseases, 1-2 times of bactericidal agents such as 30% fungus or 70% rich villages should be sprayed during the Qingyuan period.
2, the middle-cooked lychee water east, black leaves, scorpion laughter, etc. are in the last autumn shoots and growth. This year, there is more rain, which is very conducive to the growth of new shoots, especially the well-managed orchard. Each new shoot is drawn long and grows vigorously. However, the last autumn shoots grow too long, which is not conducive to the plant to enter reproductive growth, because the long-term ripening of the branches takes a long time, resulting in the timely extraction of the autumn shoots can not be timely and mature, also affecting the flower. Therefore, in addition to the timely extraction of the last autumn shoots, there must be an appropriate length to ensure the quality of the resulting female branches. In the autumn with sufficient rain, it is prone to the phenomenon of new shoots. If the autumn shoots are long, it is necessary to spray and control the shoots in time. Generally, the last autumn shoots are about 25 cm in length. At present, most of the medium-sized orchards, the second or third autumn shoots are growing, and the last autumn shoots of the water and black leaves are drawn. 1 The autumn shoots that are currently being produced can be called the timely autumn shoots of the mid-maturing varieties. Pay attention to the growth length and not affect the flowering due to excessive growth. If there is too much rain in the last autumn shoot growth process, it is necessary to spray the tipping spirit once in a timely manner to control the length of the new shoots and mature at the right time. 2 At present, the new shoots are still growing. It is expected to be mature in mid-October in October, and it is necessary to do a good job of preventing winter shoots. When the new shoot leaves begin to turn green, spray one time to control the shoot spirit, and wait until the branches are old and then perform ring cutting or spiral ring stripping. Or hurry to apply the right amount of nitrogen fertilizer, promote the growth of new shoots, increase the length of the shoots, delay the shoots in the middle and late October, and then spray the control of the shoots. 3 The last autumn shoots of Shuidong and Heye varieties are drawn in late September or early November. High-concentration-controlled shoots should be sprayed once in mid-October in mid-October to force the new shoots to stop growing and strive to mature in mid-November. 4 妃å笑 is best to take out the last autumn shoots in late September at the latest in early October. The low temperature comes early in the production area, and the last autumn shoots should be placed early. In high temperature areas, the last autumn shoots can be delayed and the winter shoots can be prevented. The time required for the last autumn shoots is related to the management level of the orchard, the supply of fertilizer and water, the temperature, the light, and the length of the branches. After entering the autumn and winter, the light is reduced, the temperature is lowered, the photosynthesis ability of the leaves is weakened, the nutrient accumulation rate is decreased, and the old and mature branches are more time-consuming than the summer. Therefore, planting the same litchi variety in the northern part of Guangdong is less than 1-2 new shoots per year under the same management conditions, and the young tree is also 1-2 years later. 5 fertilization. In the last autumn shoot, if the orchard fertilizer management is normal, the application amount of nitrogen fertilizer can be reduced, and the amount of potassium fertilizer can be increased appropriately. If the orchard is lack of fertilizer, more nitrogen fertilizer should be applied to the last autumn shoot to ensure the new shoots. Take out in time.
In the absence of nitrogen fertilizer, the plant can not take out new shoots, miss the tipping time, it will affect the quality of the autumn shoots, thus affecting the flowering. 6 external fattening tips. This year, there are many rains and less light. The autumn leaves are large and thin. In addition to strengthening soil fertilization, it is necessary to carry out root dressing. When the leaves begin to turn green, spray 1-2 agricultural nucleotides to promote the formation of chlorophyll, improve the photosynthetic efficiency of the leaves, and help to cultivate the strong autumn shoots. 7 thin branches. After retreating or trimming the fruit, the tree with too many branches should be stripped at the last autumn tip, and the weak branches and the yin branches should be removed to increase the transparency of the crown to ensure the result. The thickness of the mother branch.
3, late-maturing lychee glutinous rice bran, Guiwei, Huaizhi, etc. are in the autumn shoot growth period. Many orchards are in the first new shoots or the second new shoots, and the last autumn shoots are attacked according to the tree. In the past, we released the last autumn shoots of late-maturing lychee in the "autumn", but in the high temperature weather in autumn and winter in recent years, the last autumn shoots are ripe and ripe, which is easy to trigger winter shoots, which affects flower bud differentiation, so the last autumn shoots are delayed until October. I pulled out in the middle of the day and even arrived late for the winter. When the autumn shoots released are the most suitable autumn shoots in their orchards, they should be based on their own experience and management level. There is no uniform time limit. 1 Old orchard, fertilization should begin in mid-September to prepare for the attack on autumn shoots in late September. The last autumn tip should be released before and after the "autumn". Due to its slow physiological activity, the old tree has weak root absorption. After the new shoots are taken out in late September, it is generally difficult to extract the winter shoots. If you have a wealth of cultivation experience, you can postpone the last autumn shoot until late October or early November. However, it should be noted that the late autumn shoots are late, and the buds are late. Because of the high temperature in the spring, the flower quality is often affected. 2 juvenile orchards, because of their strong growth, the last autumn shoots are too mature, easy to produce winter shoots, affecting flower bud differentiation, so the last autumn shoots can be delayed. In western Guangdong, it can be released before mid-October, Guangdong and Guangdong are released in early October, and northern Guangdong is released in late September or early October. 3 Fertilize the shoots in late September or early October. Many orchards have not been carefully managed, and this year, there are more rains and new shoots are not growing vigorously. When the last autumn shoots are attacked, they must be fertilized. Otherwise, the quality of the autumn shoots will be affected. Despite the lack of fertilizer, they should not blindly apply more nitrogen fertilizer. Cause the new shoots to grow or leave too much nitrogen fertilizer to trigger the winter shoots. Before the last autumn shoots, the fertilizer should be mixed with organic fertilizer and compound fertilizer and appropriate amount of nitrogen fertilizer. Nitrogen fertilizer promotes the extraction of new shoots. Compound fertilizer and organic fertilizer provide various elements for branching and provide nutrients for flower bud differentiation. Therefore, before the last autumn shoots or the last autumn shoots, organic fertilizer is advocated. In addition to improving the quality of the last autumn shoots, it also serves the flower bud differentiation. 4 Weeds, reduce pests and diseases, and ensure the normal growth of autumn leaves. Because of the heavy rain this year, almost a rain, a grass, many orchards are overgrown, diseases, insect pests have occurred in the new shoots. In the orchard where the autumn shoots are still growing, the tree pots should be kept free of weeds, without drooping yin branches, ensuring that the canopy is ventilated and light-transparent. In addition, the orchard tree pots on the hillsides should be covered, and shallow ditch rainwater should be kept to keep the soil moist and beneficial to root growth. And new shoots grow. 5 spray in time to protect each new shoot.
4. Longan is in the growth stage of autumn shoots. Regardless of the management level, most longan gardens are in the autumn shoots. The main work is fertilization, sparse branching, and spraying to protect each new shoot. The longan enters the flower bud differentiation later than the litchi, so the last autumn shoot can be postponed appropriately, but the late autumn shoots are late, and the bud period is often endangered by the “shootingâ€. 1 part of the orchard shoots began to turn green, spray 1-2 agricultural nucleotides, promote the leaves turn green, the branches are old and mature, and strive to extract the last autumn shoots in mid-October. 2 parts of the orchard new shoots have just been pulled out. After the new shoots are matured, it is generally difficult to put the autumn shoots again in the middle and late October. If such autumn shoots encounter high temperature and high humidity in winter, in November or December. Take out the winter shoots, in order to prevent the winter shoots, increase the amount of nitrogen fertilizer application, extend the length of the shoots, and delay the ripening. In the orchard of western Guangdong or Hainan Island, you want to put another autumn shoot in late October or early November. You should spray the tip of the shoot to control the length of the new shoot, and mature in the middle and late November. 3 Many orchards have only extracted one autumn shoot for this purpose, and should be thinned before and after the second autumn shoot. The sooner the branching is, the better, the concentrated nutrients will cultivate the thickness of the autumn shoots, and the last autumn shoots of the longan will be too fine to form flowers. Remove the yin branches and weak branches, so that the crown can be ventilated and light, which is more conducive to the growth of new shoots and flower bud differentiation. 4 Remove the weeds in the tree basin to reduce pests and diseases. The mountain orchard tree basin should be covered and can retain water, and the soil moisture can prolong the life of the root system. When we apply fertilizer, we often use spreading, the roots grow with fertilizer, and many of the roots are born on the soil surface. When it is dry, it is easy to die and affect the growth of branches and leaves. 5 spray medicine tips.
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