Lychee is one of the fruits that many people like to eat. It is known as the nickname of "Zizixiao". It is distributed in southern China and is one of the unique fruits in the south. Litchi is famous for its full flesh and plenty of water, but do you know how many pests and diseases are affected by the litchi during the growing process? Today, Xiaobian introduces several common diseases about litchi.
1, the elephant
The cockroaches generally feed on the fruit tips, spikes and fruits of the lychee young fruit period, causing the fruit to fall. In the low temperature conditions in winter, the elephants will enter a state of suspended animation. We can shake the branches and fall to the ground to eliminate them. It can also be sprayed with pharmacy. Generally, the activity period of the scorpion is 3, 4, and 5 months. In these three months, the agent is sprayed once every month, and the egg mass of the scorpion is also obvious. The egg can be concentrated.
2, cockroach
As the name suggests, the scorpion worms will feed on the pedicles during the young lychee period. They will enter the fruit from the pedicel, and the fruit will fall and the fruit will fall. The transporting tissue will be hollowed out and the leaves will be yellow. In the winter orchard, the work of the Qingyuan Garden should be done well. The fallen dead branches should be concentrated and burned. One month before the flowering and fruit ripening, the spraying prevention can be carried out with 750 times dichlorvos or 1000 times. However, it should be noted that the larvae live in the veins and the adults are in the canopy.
3, ruler
There are many types of scales, and they also feed on leaves and young fruits. The most serious problem is that when the lychee blooms in the spring, before the lychee has not blossomed or after the flowering, the spraying agent is eliminated. It can be sprayed with 800 times of dichlorvos or 900 times of trichlorfon. However, it should be noted that the ruler is also very harmful to people. It is necessary to pay attention to the fact that the ruler can not touch the skin of the body, and the skin will appear red and swollen, painful and itchy!
4, leaf roller moth
There are many different types of leaf moths. The larvae feed on leaves, fruit tips and foraging fruits, which are the most active of several pests. The prevention and treatment methods are similar to the previous ones. In the winter, the work of clearing the garden is carried out, and the dead branches are burned intensively. Before the flowers are opened, the dichlorvos are sprayed after the flowers.
5, chafer
There are two common chafers, the flower chafer and the patina. Adult chafers will eat leaves and fruits, etc. The larvae generally live in the ground to eat the roots, so that the fruit trees can not absorb nutrients, and the tree is deteriorated. In the morning and evening, the chafer will concentrate on flying. At this time, the artificially captured or faked shaking branches can be used. The fallen ground can be eliminated in a concentrated manner. It can also spray pesticides . It can also be sprayed with phoxim before the soil larvae are unearthed.
6, felt disease
The main hazard of felt disease is the young leaves, which in severe cases endanger the spikes or branches. The main pest is rust, and when this pest occurs, the front leaves are like rust. In the spring, it is the most serious. The damaged leaves have toothpicks protruding, the affected part is enlarged and thickened, and there are white hairs on the back. Generally, it is necessary to cut off the damaged branches, remove the fallen branches, and burn them intensively. In the spring when sprouting, you can spray dichlorvos and other agents for prevention.
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