Autumn shoots are the result of the coming of the citrus fruit in the coming year. The autumn shoots are sturdy and mature, and they are very helpful for the growth of citrus in the coming year. However, it is very vexing for people not to put autumn shoots on citrus. Today, we share with you the reasons why citrus does not fall. What should I do?
What are the reasons why citrus doesn't leave autumn shoots?
In recent days, the continuous high temperatures and droughts in the south have caused many orange farmers to suffer. Apart from working in the fields under the scorching sun, it is the autumn shoots that have not yet been released. In general, citrus shoots take 40-45 days to mature, if the autumn shoots are drawn too late, they will be delayed and mature. Later, it will involve the tree nutrients, slowing the speed of fruit expansion, and also reduce the flower bud differentiation. Accumulation of temperature, especially for those trees that are producing high yields or weak trees and have a large amount of fruit, have even greater impact.
High temperature and drought, why not shoot citrus?
Root damage
The root is the main organ for water absorption in citrus. When the root of citrus is exposed to water stress due to soil drought, the outer root epidermis of the root is damaged, and most root organelles are destroyed. The shoots and roots are closely connected and the root system damaged.
During the fall period of citrus, the fruit enlargement, new shoots and root growth are in the critical period of fertility, the roots are damaged due to drought, the absorption capacity is drastically reduced, and the nutrient absorption can not keep up with consumption. At this time, the fruit has basically stabilized. Competition in the top position in the top fruit is difficult.
What are the reasons why citrus leaves no autumn shoots?
Base fertilizer is slow to start
Although many fruit growers had previously used Jiji autumn shoot fertilizer, the composition of autumn shoot fertilizer was dominated by organic fertilizer and quick-acting compound fertilizer. The slow and long-lasting effect of organic fertilizers is to provide nutrients for the whole fall period, and the quick-effect compound fertilizer is the driving force behind the “promotionâ€.
However, long-term droughts lead to slow dissolution of compound fertilizers, slower onset of action, failure to promote shoot action, and easy occurrence of fertilizer damage. In addition, roots are damaged and cannot be effectively absorbed. New shoots are difficult to use.
Tree affected by drought
Leaf is the most sensitive organ for citrus response to water stress. If it is prolonged drought, the ultrastructure of chloroplast will change and the chloroplast granules will be arranged disorderly. When it is severe, it will even disintegrate, affecting its photosynthetic energy efficiency.
When the shoots are blocked in drought, they often appear to be older and stop growing or pumping. The main reason is that drought inhibits cell division.
What are the reasons why citrus leaves no autumn shoots?
Effects of Long-term Drought Environment on the Growth of Citrus Shoots
In the long-term drought environment, the extracted amount of citrus shoots is much lower than under normal conditions, especially the source of autumn shoots: Fan Weiguo
Drought will increase the concentration of sap, break the balance between vegetative growth and reproductive growth, promote flower bud differentiation, and even the possibility of autumn flowers, increase the abnormal consumption of tree nutrients, and hinder new shoots.
When the citrus is arid, the general trend of hormone changes in the body is to promote the growth of hormones to reduce or delay the growth of hormones, it is difficult to shoot.
Citrus does not put up with autumn shoots
It is a self-protection behavior that citrus does not appear when it is hot and drought. Just think, if the shoots are pulled out, the transpiration will undoubtedly aggravate and the trees will suffer even more from water stress, so doing a good job in drought fighting is the major premise of promoting the shoots.
Do drought work: measures include irrigation, tree cover, grass cultivation, water spray, etc., but the most effective and direct irrigation. Irrigation should be carried out every morning and evening. It is important to remember not to wait until a severe drought occurs in the Orangery Park and then flood the water to avoid causing a large number of cracks.
What are the reasons why citrus leaves no autumn shoots?
Enhance tree nutrition: spray 800-1000 times of sea elf bio-stimulant (leaf type) on the canopy, on the one hand to enhance photosynthesis, and at the same time, to supplement tree nutrients and enhance fruit growth; on the other hand, sea elves contain Humic acid and seaweed extract can promote the increase of proline content in the leaves of plants, promote the water-holding capacity of cells, increase the activity of plant cell protective enzymes, and reduce the permeability of cytoplasmic membranes to comprehensively improve the drought resistance of citrus.
Conserve the root system: Sprinkle water sea spirit stimulant (root type) 300 times liquid to repair damaged roots, improve fertilizer efficiency and absorption capacity, help new shoots. It is recommended to use ditching and drenching. After the drought, the surface of the soil is crusted. It is difficult for the water poured on the ground to infiltrate into the soil below 5 cm, and it is easy to evaporate. The utilization rate of fertilizer and water is very low.
Matters needing attention: 1 If the drought persists, it is necessary to insist on doing a good job of drought-resistance work. After 5 cm out of new shoots, increase the application of phosphorus and potassium fertilizers to promote their aging and reduce transpiration consumption. 2 If the drought is particularly severe, you should abandon the tip of the tree to protect the tree. The remaining Castle Peak is not afraid of not having wood.
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