What to do if there are insects growing on the leaves of the lemon tree when there are insects growi

There is no fermentation and rotting with nutrient soil, and there are more pests and diseases in the soil, and there are more pests and diseases in the animal manure, crop straw, and scraps, and if they are directly applied to the soil, they will spread, breed, and hatch in the soil, endangering the growth of crops, and outbreaks of pests and diseases.

People who have been raising flowers for a long time often encounter the situation of potting insects, and I will briefly introduce a few methods below:

1. Precautionary Act. Before potting the potted flowers, put the potting soil into a larger old food bag, pour boiling water, tie the bag tightly, expose it to the sun for a day, and then spread it out and dry it to use, which can play a role in killing insect eggs.

2. Chemical method. Long-term dampness in the potting soil causes insect pests, insecticides can be purchased, sprayed to kill insects, and indoor potted plants should be avoided.

3. Change the living environment of pests, move the flower pot to a dry and ventilated place, bask in the sun, pay attention to timely watering, and shade-loving flowers, such as orchids and bamboos, should cover the plants and prevent sunburn leaves.

Fourth, replace the potting soil. After changing the soil, it is necessary to pay attention to shading and maintenance for a period of time before it can be transferred to normal cultivation.

Summary: It is a very common phenomenon to grow insects in the soil of planting flowers, and there are many reasons for the generation, the most important reason is that the soil is not treated well, and many germs, eggs and pests are living or overwintering in the soil. So the best way is to change the pot, that is, to change the soil.

If you haven't started potting yet, sanitize the soil before potting.

This is a mite. Also a miniature version of the spider, in a magnifying glass of 50x.

The next is the spider, go to the flower shop to buy dimethoate or ask the boss if there is a new odorless insecticide, according to the instructions or the method taught by the boss to use the spray leaf to kill insects, and at the same time remove the topsoil of the pot surface, spray the pot surface to kill insects, so that the effect will be better.

Adult worms should be sprayed in the evening, and larvae that have infiltrated the leaves should be sprayed in the afternoon. Prune reasonably to keep the fruit trees ventilated and breathable. Pay attention to the initial prevention and control of insect pests, and prevent them from March to May every year.

The insects of the lemon tree are scale insects. The orchard with dense branches and shaded by each other is prone to scale insects, which are mainly concentrated on the back of the leaves and the surface of the fruit to absorb juice, and the body color of the insects is reddish-brown, white, black, etc., and the shape is cautious of round, dot-shaped, cotton-shaped, etc., and the orchards where a variety of scale insects occur, and the soot disease is more serious.

Outdoor maintenance of lemon potted plants, wait until the surface of the potting soil is dry and immediately water it thoroughly, there is a sufficient ventilation environment, so that its soil can quickly dry and wet alternately, such as poor ventilation, give it a regular monthly carbendazim to prevent it from appearing rotten roots.

Lemon trees belong to the Rutaceae family, and most of the insects that are easy to grow are the larvae of the Phoenixaceae family (the larvae are similar to green insects, the first half has a mimic pattern similar to the eyes, and when angry, it will stretch out a Y-shaped stinky horn, and the taste is extremely unpleasant, which is a pungent fermented taste), such as citrus butterfly, jade ribbon butterfly, Dharma butterfly (tailless butterfly); In addition, lemons are also susceptible to scale insects.

What kind of medicine can be used for lemon tree worms according to which type of insect can be selected according to the specific type of insect, generally leafminer moth with cyfluthrin, scale insects with rapid culling, aphids and whiteflies mainly with acethroprid, red spider disease and insect mainly with avermectin to control, these kinds of should have a strong target.

1. Cyfluthrin

This drug is mainly used to control the leaf miner, which is the main insect pest of the lemon tree when it is still in juvenile, it will have an impact on the entire growth of the lemon tree, which will make the new leaves of the lemon tree curl and wither, the best way to control this type of insect is to use cyfluthrin solution to control, this agent can effectively remove the leaf miner.

2. Quick culling

The scale insect is a kind of insect pest that reproduces very quickly on the lemon tree, it has great damage to the lemon tree, mainly sucks the juice in the lemon leaves for life, the scale insect can be solved by rapid culling, this medicine is the natural enemy of the scale insect insect insist on sprinkling about 3 times, and the scale insect on the lemon tree can be cleaned up.

3. Pyraploprid

Pyrethoprid has a very strong medicinal effect on aphids and whiteflies that breed in lemon trees, and can be effectively controlled. Aphids and whiteflies are very bad for lemon trees, they suck the sap from the leaves, and the leaves can't be curled up properly, but they are usually killed by using a concentration of 70 percent insectoprid.

4. Abamectin

Abamectin is mainly used to deal with the red spider disease of lemon trees, which is extremely harmful to the leaves of lemon trees, which can make the leaves of lemons gradually lose their green color, and in severe cases, the whole leaves will turn gray-white, so that the leaves will fall.

When I woke up in the morning and went for a morning jog, I passed by the flower garden downstairs to see how the lemon tree I had transplanted a few months ago was growing.

It turned out that the small lemon tree had grown taller, but its leaves were almost incomplete, and it was almost impossible to find a single intact leaf, which was eaten by insects.

If you look closely, there is a brown insect on a large leaf, which is particularly ugly, and it looks like a piece of bird poop that has fallen on the leaf from a distance, and it is only when you look closely that it is a worm.

Then I saw two large fat green worms lying on the other two large leaves, and most of the leaves had been eaten by it. The insect was chubby and short, its whole body was as green as the leaves, and its head was larger than its body, with a horizontal pattern in the middle of its head, like its eyes. The tip of the head protrudes like a pig's nose, as if it were its mouth.

It's the first time I've seen this strange bug, and it's disgusting to look at, and goosebumps are up. I was a little scared to get too close, but I didn't want it to continue to harm my lemon tree. So I picked up a small stick from the ground and slapped the little trunk of the lemon tree, hoping to drive them away.

They were unmoved, and one of the larger ones suddenly spat out two red soft, sticky whiskers, like snakes spitting letters. It scared me again.

I held back my nausea and picked them out one by one with my little stick, not knowing where they flew in the grass, hoping that they would not come to harm my lemon tree again. If they continue to gnaw on so unscrupulously, my lemon tree will be finished sooner or later.

After a while, I learned that this insect is the larva of the citrus butterfly, and it will also become a butterfly in the future.

<> are usually mealybugs, which feed on the sap from the branches. Mealybugs are small sap-sucking insects belonging to the genus Mealybugs, which are distributed worldwide and adapt to various environments. The female is oval, slow, about 1 cm long, and has a white sticky powder on the outside of the body.

It mainly harms all kinds of fruit trees, flowers, succulents and other plants, often clusters on branches, leaves, and fruits, and sucks plant juice for life, which will cause plant death in severe cases. Mealybug females and larvae cluster on the dorsal surface of the leaves. Male adults have a pair of well-developed forewings in the middle thorax and a well-developed reproductive sheath at the end of the body.

Harm crops, fruit trees, gardens, forests and pastures.