Is there a pest if there are black dots in the new leaves of Fugui bamboo?

When planting, there are very lush roots, more than half a month, why don't you grow leaves, is it to use a plastic bag to make the head rich bamboo so that it can grow leaves? When planting, there are very lush roots, more than half a month, why don't they grow leaves, do you want to wrap your head in a plastic bag?

If it is not the most serious, first use garlic, or ginger, mince it, mix it in water and spray it on the insect plant with a nozzle to spray it several times a day, if it still doesn't work, then only use an insecticide ratio, and then spray it again.

Growth habits. Fugui bamboo is thick and thick, mostly cultivated in the garden, there are wild, like shade and dampness, the stems and leaves are thick, the leaves are dark green, mainly used as ornamental plants, the stems are straight, the leaf color is thick green, and the winter and summer are evergreen. Cultivation of Fugui bamboo begins in spring and can be harvested in mid to late December, this variety is coarsely managed, and can be cultivated in loose and fertile paddy fields and slopes. Regardless of the disc planting or cutting the stem bottle insertion or processing "lucky bamboo", "bent bamboo", all appear sparse and noble, the stems and leaves are delicate, soft and elegant, the posture is chic, rich in bamboo rhyme, and the ornamental value is particularly high.

Generally, it is mostly used for family bottle cuttings or potted plant maintenance, especially the "tower-shaped" shape that has been spread from Taiwan, also known as "transfer bamboo", has high ornamental value and is quite popular in the international market. Planting Fugui bamboo has the advantages of high yield and high economic benefits, 10,000 plants can be planted per mu, and the output value per mu can reach 350,000 yuan a year.

If the leaves don't have holes, it's okay for a few days! There are flying insects that need to be cleaned with water.

Eat, but the black particles should not be cockroach droppings, they may be other bug droppings.

Cockroaches carry bacteria all over their bodies, and food contaminated with cockroaches can cause severe gastroenteritis, food poisoning or dysentery. It is the carrier of infectious bacteria and viruses, because of the food everywhere, crawling, the invasion is wide, the food is miscellaneous, both can be in the garbage, toilets, washroom activities, and food to eat, if you eat the cockroach contaminated food may transmit the disease, so the harm of cockroach transmission disease can not be ignored. Cockroaches have been shown to carry about 40-50 species of bacteria that are pathogenic to vertebrates, such as dysentery bacillus, Escherichia coli, Yersinia pestis, etc., which can cause food poisoning and spread hepatitis, poliomyelitis, pneumonia, tuberculosis and other pathogenic bacteria.

It is also an intermediate host for a variety of parasites, which can carry a variety of worm eggs such as roundworms, duodenal hookworms, beef tapeworms, burn worms, whipworms, etc., and also carries a variety of protozoa, four of which are pathogenic to humans or animals, such as dysentery amoeba and so on.

Because cockroaches produce foul-smelling secretions when eating, destroying the taste of food, weak or sensitive people will have various allergic reactions if they come into contact with cockroach-contaminated food or cockroach feces and secretions and foul air.

1. Poor environment, poor ventilation and light transmittance, leading to fungal infection. If this situation is found, it is necessary to increase the light as soon as possible, strengthen ventilation, and provide a suitable growth environment for the plants. If the situation is severe, spray for treatment.

2. If you are infected with insect pests, you should cut off the diseased leaves and branches in time, burn them and spray them to prevent and control them, so as to avoid further deterioration.

1. Diseases.

There are black spots on the leaves of plants, which may be because the plant is affected by fungal parasitism caused by fungal diseases, and there are two main types of diseases caused by fungi to host plants: one is necrosis and decay such as various leaf spots, leaf wilt, root rot, fruit rot, etc.; the second is wilting, which is caused by pathogens infecting roots and vascular tissues; The third is discoloration, deformity and other symptoms.

1.There are five main types of fungal diseases.

1) Formation of mold, such as white mold, gray mold, black mold, smoke mold, etc.

2) Formation of powders, such as various white powders.

3) The formation of rust, such as yellow-brown and orange-yellow rust formed by various rusts.

4) Various dots are formed on infected tissues and organs, such as black dots, brown dots and white dots.

5) All kinds of sclerotia, mycelium, etc.

2.Methods and procedures for the diagnosis of fungal diseases.

Observe the type of symptoms of the affected strain, and pay attention to the surface of the diseased tissue for fungal fruiting bodies such as powder, mold, or small black spots. Determine whether it is caused by a fungus. Use a needle to pick off the mold layer or powder, or slice the diseased part of the small black spot by hand to make a temporary slide microscopic examination to determine what kind of fungus it is.

If the diseased area does not have a fruiting body, the diseased tissue can be moisturized in a petri dish or moisturized with wet gauze for 24 to 48 hours, and then microscopic examination after the fruiting body appears. Diseased tissues often have many saprophytes rather than pathogenic bacteria, and fresh diseased tissue should be used for examination.

2. Pests. The adult or eggs of some pests are distributed on the leaves of plants, which can also cause the leaves of plants to appear to be dense black spots, or some pests can cause small black spots on the leaves.

3. Plant pest control methods.

At present, the green production technology implements the plant protection policy of "prevention first, comprehensive control", and adheres to the principle of "agricultural control, physical control, biological control, supplemented by chemical control". Agricultural control and biological control are implemented in the process of cultivation management, and chemical control is only used as an auxiliary control measure.

1) Physical control.

Pest control is carried out by physical methods such as lighting, chemotaxis control, and manual pest capture.

2) Biological control.

In the period of high incidence of pests and diseases, the method of introducing natural enemies of pests and diseases can be introduced to achieve the purpose of eliminating pests, and then avoid the purpose of pests and diseases.

3) Agricultural control.

Pest control was carried out by pruning diseased branches and fruits, strengthening cultivation management, reasonable pruning, combining garden clearing, applying base fertilizer, and using bagging and fruit protection technology.

4) Chemical control.

Chemical control can only be used as an auxiliary measure, and refer to the relevant pesticide use guidelines and regulations in GB4285 and GB T8321, and strictly grasp the application dose, the number of consecutive uses, the application method and the safety interval.

It must be sick, Fugui Zhuma is born with Fugui disease, which is generally difficult to treat. You can soak some soot to water the flowers and smear it to kill insects, take it to bask in the mild sun, talk to it more and tell him how much you want it to be the plant can feel it. Finally, I wish you a speedy recovery.

Here's a little trick to make sure it's easy to use.

In Yang Fugui bamboo.

Add a few rusty iron nails to the water, and then don't change the water, as long as there is a lack of water, make up for a few, it won't take long, the roots of Fugui bamboo will rise a lot, and the leaves will also remove the yellow spots, and grow black.

Green-black-green.

The yellowing of the leaves of water-nourished Fugui bamboo leaves can be found from the following two aspects:

One is to check the water quality, mainly to see if the root system is fresh. If it is the root rot caused by unclean water quality, you can cut off the yellow leaves first, and when the symptoms are not serious, you should change the water with cool boiled water, and it is advisable to change the water frequently, and place it in a ventilated and sunny position for restorative maintenance; When the symptoms are severe, pesticides should be sprayed appropriately or a small amount of fungicide should be added to the water pan.

The second is to check the light conditions of the place, such as too dark light, stuffy and unventilated, dry air, etc., which will cause the leaves to turn yellow; However, if the light is too strong in the placed part, it will also cause the leaves to turn yellow and lose focus. The yellow leaves can be cut off first, and the rotten root system should also be cut off, and then create a clean, moderate temperature, cool, moist and good scattered light environment.

In addition, pruned plants can be sprayed with pesticides for control, such as new high-fat film float.

Before the water nourishes the rich bamboo to take root, the yellow leaves are normal, but not too yellow, you have to pay attention to the following to master the following essentials:

1.The base is delobed and cut into an oblique incision.

Before entering the bottle, the blade at the base of the cuttings should be removed, and the base should be cut into an oblique mouth with a sharp knife, and the knife edge should be smooth to increase the absorption area of water and nutrients. Every 3-4 days, change the water, put a few pieces of small charcoal for antiseptic, and do not move the position for 10 days before taking root. You can put a few small iron nails in it, and you can also use ferrous sulfate instead, but be sure to put less.

It takes about 15 days to grow silvery-white fibrous roots.

2.Change the water and add water instead.

It is not advisable to change the water after rooting, and only add water in time after the water evaporates. Frequent water change can easily cause leaf yellow and branch wilting. It is best to use well water to add water, and to store tap water in utensils for a day, the water should be kept clean and fresh, and dirty water, hard water or water mixed with oil can not be used, otherwise it is easy to rot roots.

3.Timely fertilization.

In order to prevent the growth of water-nourished bamboo, do not apply chemical fertilizers, it is best to inject a few drops of brandy wine into the bottle every 3 weeks or so, and add a small amount of nutrient solution; You can also use 500 grams of water to dissolve half a piece of aspirin or a piece of VC into powder, and add a few drops when adding water to keep the leaves green.

4.Avoid the wind.

Do not place the bamboo next to the TV or the place where the air conditioner and electric fan are often blown, so as to avoid the leaf tips and leaf edges from yellowing and drying.

5.As long as the temperature reaches more than 20 degrees, do not put it in the sun, as long as there is scattered light, it will definitely take root in 15-20 days.

Symptoms of Fugui bamboo leaf spot disease: the initial stage of the lesion is brown spots, and the edges are yellow; After expansion, the lesion is nearly rounded, **gray, the margins are black-brown, and the periphery is yellow; Black granules appear on the lesions under wet conditions.

Prevention and control methods: 1) Prevent the plants from being too dense and keep ventilation and light.

2) At the beginning of the disease, spray 3000 times of 42 grams of bacterial powder, or 1000 times of 88 hydrate, or 800 times of 25 copper ammonia, every 5 7 days, and spray 2 3 times.

There are long yellow spots on my rich bamboo, and the stems are all yellow, and there are things like sawdust on the spots, which can be scraped off with your fingernails, and then I checked and estimated that it was a bamboo lice, and after the nails were scraped off, I sprayed methyl Buzin twice, and it was fine, but it was too late to be saved, and a few died.

You can just remove it manually without medicine, but you must clean it up, this infection is fast, pay attention to the base of the leaf may also be inside, you can turn a leaf down and take a closer look.

It is estimated that there is a lesion. It is recommended to spray 800 to 1000 times carbendazim or chlorothalonil. Spraying every other week is fine.

Fugui bamboo leaves are yellow and dull? Don't worry, give it a "click", and it will grow more and more.

Hello, the first ** shows that the leaves of this rich bamboo have creases, which should be a mechanical injury left by the newspaper packaging at the time of harvesting, and the leaves are easily infected with bacteria after being injured, and then they appear to hang down listlessly. The second ** spot in the middle of the plant seems to be a mustard shell worm, because it can be seen from ** that several leaves gradually have yellow spots from the separation of the wrapped bamboo stem, these are the traces of the mustard shell worm, the mustard shell worm likes to suck the juice of the rich bamboo, and the nodes attached to the bamboo stem of the rich bamboo are more, and so the nutrients are sucked to almost the same, the rich bamboo will die, you can pull out the leaves that see the mustard shell worm, or scrape the mustard shell worm from the rich bamboo with a sharp weapon.

This reflects the environment, too, and absorbs formaldehyde.