What are the common pests of family farmed flowers? Control methods of common insect pests in flowers

The common pests of family cultured flowers are aphids, mosquitoes and flies (bacteria and flies) and whitefly, which not only adversely affect the ornamental of flowers, but also seriously threaten the healthy growth of flowers. There are two main methods for the prevention and control of flower pests, one is killing, which is mainly aimed at the pests with large individuals and a small number, and the other is insecticide, which is mainly aimed at the pests of mouthparts, such as beetles, pteroptera larvae and so on.

I. aphids

Harmful characters: aphids are a kind of bluish yellow insects, often concentrated on new shoots or buds such as rose, pomegranate and chrysanthemum, sucking liquid juice with mouthparts, resulting in curling and atrophy of tender leaves, seriously affecting growth and flowering, curling and withering plant leaves, producing galls and spreading virus disease.

Prevention and control methods: continuously smear leaves with tobacco water (50 times liquid) and soapy water for several times; spray with 25% fish rattan essence 800ml 1000 times solution, 40% chlorinated dimethoate 2000 times solution, 3% natural pyrethroid 1000 times liquid and deltamethrin 2000000 times liquid and so on.

2. Red spider

Harmful characters: mainly harmful to rhododendron, rose, a bunch of red, begonia, cactus, dragon cypress, etc., will suck juice with piercing mouthparts to harm the plant, resulting in small yellow-white spots on the leaves, and even scorch or fall off the leaves.

Control methods: remove weeds in the basin, eliminate overwintering eggs, improve ventilation conditions and reduce temperature; acaricides can be used for chemical control, such as butyl ether urea, abamectin, pyridaben, methotrexate, amitraz, dicofol or omethoate 100 times solution alternately sprayed on the leaves of red spiders at the initial stage of occurrence.

Mosquitoes and flies (bacteria and flies)

Harmful flowers: it is common to grow seedlings with potted flowers or grass flowers, such as poinsettia, cyclamen and pansy.

Control methods: the use of Huifu, Huijian, avermectin and other agents, through root irrigation to prevent and control mosquitoes and flies larvae.

4. Thrips

It mainly harms many kinds of flowers, such as Anthurium andraeanum, cyclamen, rose, carnation, Platycodon grandiflorum and so on. Thrips often file and suck juice at the back of tender leaves and floral organs, making the injured leaves curl, yellow, brittle and shedding.

Prevention and control methods: physical, chemical and biological methods can be used for comprehensive control; chemical control uses Huijian, lice acaroid urea, Huijian + kungfu, avermectin, spinosad and other chemical spray control.

5. Scale insects

Harmful characters: the main species of scale insects are powdery insects, red wax scale insects, blow cotton shell insects and so on, which are mainly parasitic on the young stems and leaves of plants and insert plant tissues to absorb sap with prickle mouthparts, which is one of the common pests in indoor foliage plants.

Prevention and control methods: manual control: remove the worm body with a brush and then rinse it with water; chemical control: in the peak incubation period of nymphs whose waxy shell has not yet been formed on the surface of the insect body, spray control is carried out with 1000 times of isocarbophos, 1500-2000 times of fenvalerate and 800 times of omethoate.

6. Whitefly

Harmful characters: whitefly is widely distributed and harms many kinds of flowers. the body of whitefly is small and white, and the mouthparts of adults and larvae insert juice from the back of the leaves to make the leaves withered and yellow, while excreting honeydew on the leaves and causing soot disease.

Control method: spray 2.5% deltamethrin, 20% permethrin 1500mur2000 times and pyrethroid and other pesticides to control nymphs, adults and eggs, once every 7 days, 3-4 times in a row.

7. Underground pests such as nematodes and grubs

Harmful characters: mainly bite the roots and tender stems of plants underground, resulting in root and stem rot and plant death.

Control methods: disinfect the soil with steam or medicament, trap and kill trichlorfon with food, irrigate plants with 1000 times liquid of trichlorfon, and kill manually.

8. Snails

Harmful characters: snails mainly harm plant leaves, tender stems and roots, making plant branches and leaves incomplete, affecting plant growth and ornamental, and even leading to planting death in serious cases.

Prevention and control methods: sprinkle with trichlorfon food in the snail's regular activity area; spray around the plant with trichlorfon and deltamethrin 1500 / 2000 times; and kill the snail with 8% Mianhuoling granule around the root agent.

Prevention and Control of Diseases and insect pests of Flowers in Family Culture

With the improvement of people's living standards, the construction of green families is more and more favored by people, and flowers are planted more and more widely. However, when you take good care of these flowers and green leaves, some "murderers" also come to your room quietly. Some of them invade the body of flowers and grow secretly inside, and finally make your flowers and leaves change color and dry, branches necrotic, the whole plant rotten; some chew on the leaves, so that the leaves are broken; some secretly suck juice on the back of the leaves, so that your flowers change color and aging. Under the destruction of these "murderers", some flowers rotten roots and leaves, giving off a stench, and some flowers or leaves are covered with furry green worms, which makes people tired. These are the diseases and pests of flowers. 1. Flowers are also sick. Flowers, like people, are also living creatures, and their roots, stems, leaves, flowers, fruits and seeds also suffer from the disease. When life is sick, we have to go to the hospital, flowers are sick, and we also have "botanical hospitals" to diagnose and provide treatments, as well as sell drugs. If you want to grow flowers in your room, you should learn how to diagnose flowers and treat flowers. This is to teach you how to do it. two。 The annoying diseases and insect pests are here, and we call the abnormal occurrence of flowers "flower disease". Flower disease is caused by the combined action of one or more factors. If we want to classify them scientifically, the "diseases" of flowers should be divided into several categories: diseases caused by pests, diseases caused by inappropriate environments, and real "diseases". Diseases caused by pests are caused by some harmful animals, including insects. There are many kinds of insects, some of which have nothing to do with people's lives; some are close friends of people's lives, while others can destroy people's lives, many of which can harm your flowers. These harmful animals that harm flowers are flower pests. Diseases caused by unsuitable environment: unsuitable environmental conditions, including lack of elements, chemical pollution, pesticide damage, and inappropriate measures in the process of cultivation and management, as well as various environments, such as temperature and humidity. The real "disease" is a disease caused by some pathogen. The so-called pathogens are well-known fungi, bacteria, viruses, etc., which should also include organisms such as phytoplasma and parasitic nematodes. Many people call them pathogens, which, strictly speaking, are not very accurate. In fact, pathogens refer to the fungi and bacteria. The above categories can cause abnormal growth of flowers and make flowers "sick". But a more accurate concept is that the diseases of flowers are: flower "diseases" caused by bad environmental conditions and pathogens, and "pests" caused by pests.

Prevention and Control of Diseases and insect pests in Family Flower cultivation in Spring

There are more diseases and insect pests of flowers in spring, and the damage is more serious in April and May. The common diseases and insect pests of flowers in spring are powdery mildew, rust, black spot and so on. The following is to share with you the prevention and control of diseases and insect pests in family flower cultivation in spring. In order to raise your flowers well, let's take a look.

General methods for prevention and control of diseases and insect pests in family flower cultivation in spring:

The main results are as follows: 1. Keeping the environmental hygiene of flower cultivation can reduce the harm.

2, protect the plant, do not break the skin, be injured, beware of germs invasion.

3. Pre-disinfection of culture can kill germs and pests.

4. Strengthen daily management, keep proper water and fertilizer, smooth air, suitable temperature and daylighting, so as to make the plant grow healthily and control the breeding and spread of diseases and insect pests.

Prevention and Control of Diseases and insect pests in Family Flower cultivation in Spring

The following describes the specific prevention and control of related insect pests:

I. aphids

Aphids (greasy) hibiscus, green peach, mulberry, rose, honeysuckle and so on are easily harmed by aphids. With the rise of temperature, aphids are also increasing, which must be prevented.

Prevention and control methods: 1. 40% omethoate or 50% imidophos are sprayed on water 1200-1500 times.

2. A small amount of potted flowers can also be sprayed with 70% 100 times neutral laundry powder.

2. Red spider

Red spider jasmine, Fusang, asparagus, rose, dahlia and so on began to do harm in early April.

Prevention and control methods: a small number of potted flowers often rinse the front and back of the leaves with tap water, or spray or dip in 100% 150 times of batter water that has been boiled and cooled, and rinse again with clean water in a day or two, which can achieve obvious results.

3. Scale insects

Scale insects (flower lice) most of the scale insects on Magnolia, rose, yellow poplar and Haitong began to hatch from mid-April to mid-May.

Prevention and control methods: 1. Brush off the insect body artificially before hatching.

2. Check frequently and spray 40% omethoate 1000-1500 times during the larval incubation period.

Fourth, blight disease

When the temperature reaches 20 ℃, the newly sown flowers, saplings and some flowers with rotten roots are very easy to develop blight when the soil humidity is high.

Control methods: 1. Before sowing, mix 1.5-4kg pentachloronitrobenzene with 70% per mu evenly in the soil.

2. Control watering in the young stage of the seedlings, so as not to make the soil too wet.

3. When diseased seedlings are first found, irrigate 1% ferrous sulfate or 200 times 400 times 50% Dysenamine solution, and irrigate 2-4 kg potion per square meter.

5. Rust

Rust begonia rust is easy to damage a large number of flowers and trees after rain in April and May, and rose rust occurs when roses are budding.

Prevention and control methods: 1. When the rose sprouts, the first yellow bud should be removed and burned in time to eliminate the source of infectious disease.

2. Spray 15% trimethoprim 700m 1000 times solution in the initial invasion period.

6. Powdery mildew

Powdery mildew of rose, impatiens and yellow mildew mostly occur in May and June, and it is easy to cause symptoms such as yellow leaves, withered leaves and twisted shoots in summer.

Prevention and control methods: 1. Pay attention to the ventilation and light transmission of flowers.

2. Apply less nitrogen fertilizer and more phosphorus and potassium fertilizer.

3. Spray 15% trimethoprim at the first dyeing stage with 700m 1000 times solution.