Is it normal for osmanthus litchi to appear mosaic?

The appearance of litchi with flowers and leaves is caused by high temperature and monsoon (high head south), and now it is caused by premature flowering.

There are three general methods to treat flowers and leaves: manually picking leaves to kill drugs and limiting drugs:

Manual leaf picking is generally suitable for dwarf litchi trees and small tree orchards, but not for mosaic treatment of tall trees and large fruit farms.

Drugs such as lobular scavenger, ethephon and bactericide are generally used in the drug treatment of flowers and leaves. Such as ethephon, the concentration is 3-5 ml, 30 kg of water is added, and borax 10 g is sprayed evenly with flowers and leaves when the leaflets are not unfolded, thus effectively killing the leaflets. Drugs from other manufacturers should be used in the prescribed concentration.

Litchi blooms too early, causing the flowers to sandwich the leaves. It is better to remove them manually and kill the lobules with drugs, because litchi will bloom in many days. If peanuts are in the late stage, the weather is unstable, especially in young years, the flowers are sandwiched between leaves due to warm winter and high temperature in early spring and high head south (monsoon), and the flowering time is limited. If the flowers are sandwiched between leaves, the flowers are easy to become sharp.

Extended data:

Matters needing attention in cultivation of Guiwei litchi

1, fertilizer management

Fertilizer before flowering: the purpose is to absorb fertilizer before flowering and supply the growth of fruit ears and fruits. Organic fertilizer should be applied after the pure panicle is extracted, and at the latest before flowering 15~30 days, and water fertilizer should be applied at the latest before flowering 7~ 15 days. Fertilization amount: 2 kg of compound fertilizer and 0.5 kg of potassium fertilizer were applied to litchi fruit surface 100kg, and 3 kg of compound fertilizer and 0.5 kg of potassium fertilizer 100kg of longan fruit surface.

Strong fruit fertilizer: in the middle and late May, if litchi and longan have more fruits, yellow leaves and weak trees, they should be supplemented with strong fruit fertilizer. The amount of fertilization depends on the specific situation. Generally, compound fertilizer 1~2 kg and urea 0.5~ 1.5 kg are applied per 100 kg of fruit trees.

2. Water management

Heading date: it should be treated according to different varieties: litchi is dry and not wet; Longan would rather be wet than dry, especially not dry until the leaves fall, so as not to cause tree decay. From ear development period to fruit development period: maintaining a balanced supply of water and keeping the soil moist is beneficial to the growth and development of ear and fruit.

3. Soil management

If you don't clean the garden in winter and trim the irrigation and drainage channels, you should try to clean the garden before the Qingming flowering, so as to make the soil fertile, spray pesticides to kill overwintering pests and diseases, reduce the base of pests and diseases and defoliation, so as not to cause tree decline.