It is said that citrus is a disease, and it is not over yet, because the flowers, leaves, fruits and roots of citrus will be hurt after dyeing. In addition, its pathogen is not cultivated artificially, and there is some uncertainty in classification, so it will be more difficult to prevent it. Only through reasonable cultivation can Huanglongbing occur through reasonable cultivation management, which is the best way to prevent Huanglongbing in citrus.

Disease symptoms

After the occurrence of citrus, it can show diseases all year round, especially in summer foot and autumn shield. However, the characteristics of different parts of plants are different in different periods of different patients. The preliminary judgment is based on the motivation of branches and leaves, which is the main judgment.

1, the solid turns yellow. There is a typical and common way, mainly near the leaves and lateral veins, gradually retreating, yellow or light yellow, continuing to expand or expanding irregular macula in the middle. Finally, the whole leaf looks like a yellow-green stage with irregular mottled boxes.

2. The mosaic is yellow. In this case, Huanglongbing, which takes out new leaves from brittleness, generally shows the symptoms of chloride, green, vein and green tissue, and flowers are similar to citrus.

3. Evenly turn yellow. This situation seems to be more at the foot of a sick tree in summer and a shield in autumn. After the new feet are pulled out, the new leaves turn green, turn green and become more uniform and yellow, and the leaves are easy to fall off in the later stage.

These three types of symptoms are more common after citrus oxalic acid. At the beginning of the attack, plants shoot branches, shoots, leaves and leaves, and stop turning green when they are mature, which is obvious in trees that are close to maturity. Yellow trees.

After early flowering, citrus has many flowers, but many distortions, small fruit, early maturity, thick peel, dull, sour but dull, sour; Root rot, serious defoliation, and finally the whole plant died.

prevent

In fact, it is not the highest means of pest control, and many consumers do not want to see it now. Crops with symptoms from dyes, as long as we cut off some links, can prevent diseases through pre-dyeing, exposure, series connection and pathogenesis.

1, dig the diseased tree. Collecting diseased trees is a measure to prevent infection, spread, spread and Huanglongbing. After digging the orchard and burning it. It can be redecorated under the light of the garden.

2. Prevent and treat monsters. In the garden, you must actively prevent citrus fruit rot, especially in the vicinity of the citrus garden. Bactrocera citri is a vector pest, which spreads Huanglongbing, and eliminating it greatly reduces the chance of infection. When fresh tips are extracted, pesticides can be sprayed for control; In addition, planting shelterbelts around citrus orchards to maintain high humidity in orchards will also hinder the flight of monsters, which is not conducive to the growth and reproduction of music economy.

3. Strict management. Citrus is basically the same tree after oxalis, and there is also the risk of infecting jewelry. Therefore, it is strictly planted on the management.

First of all, we should choose heartless seedlings to ensure the cleanliness and hygiene of the park; Secondly, it is necessary to strengthen the management of water and fertilizer, keep the trees stable, reduce the resistance of plants and reduce the occurrence of citrus Huanglongbing, which has a positive preventive effect.

Fruit tree is a kind of tree planting. Citrus is harvested every year, and its sales volume and price are good, but it includes not only many genera, but also fruits in fruits. Therefore, we want to make citrus grow steadily and produce high yield, and do a good job in planting management, but we can't just prevent citrus Huanglongbing.