How to prevent flower diseases? Principles and requirements of flower pest control

In the first two articles, we talked about the harm of pests to flowers and the morphological characteristics of pests. Many flower friends left messages saying that they wanted to know how to control diseases and insect pests and how to raise flowers well. In fact, in the growth and development of flowers, due to the impact of the external environment, often stunted, and will cause leaf deformation, a variety of disease spots, and even death. Therefore, the prevention and control of diseases and insect pests is imperative. Below, the editor of Huinong Network will talk to you about the principles and requirements of flower pest control.

1. Choose a suitable cultivation environment.

Under normal circumstances, you should choose to plant flowers in a ventilated and sunny place. Where light, temperature and humidity can be reasonably adjusted, the occurrence of diseases and insect pests will be relatively reduced.

Timely removal of disease and insect plant remains and litter, and centralized destruction. Avoid repeated pollution in the process of production operation, pruning, ploughing, weeding, heart picking must be reasonable and scientific, and to prevent appliances and hands from transmitting germs to healthy plants. Diseased soil and pots cannot be reused without disinfection.

2. Select excellent cultivated seedlings.

When planting, you should choose disease-free seedlings, or seeds that are excellent and resistant to diseases and insect pests. Some diseases and insect pests spread with seeds and other reproductive materials. The cultivation and selection of pest-free seeds must be taken as an important measure for the prevention and control of these diseases. At the same time, the soil should be disinfected, and weeds should be eradicated frequently to eliminate the infection sources of diseases and insect pests.

3. Strengthen the daily management of science

Strengthen the scientific management of soil, fertilization and watering. Reasonable fertilization and irrigation will make the plant grow healthily, and when using organic fertilizer, it must be fully mature to reduce the source of infection; if inorganic fertilizer is used, we must pay attention to the balance between various elements to promote plant growth and enhance disease resistance. The method, frequency, amount and time of watering are all related to the growth and development and stress resistance of plants.

4. Scientific prevention and control of diseases and insect pests

There are generally three prevention and control methods:

(1) Biological control

The method of using bacteria to treat diseases, bacteria to control insects or insects to control insects.

(2) physical control

Mainly through heat treatment, mechanical barrier and radiation and other methods to control diseases and insect pests, such as plastic film mulching in early spring.

(3) Chemical control

In short, it is the use of drugs, the operation is simple, the effect is remarkable, but the environmental pollution is greater, so we should choose pesticides with low toxicity, high efficiency and low pollution to control diseases and insect pests, and should not apply pesticides indiscriminately.

The above are the principles and requirements for the prevention and control of flower diseases and insect pests sorted out by the editor of Huinong net. Have you learned all these? If you want to know more about agricultural technology, please follow Huinong School!

How to prevent and cure flower diseases? Prevention and Control of Common Diseases of Family Flowers

At present, flowers are the main family greening plants for urban people, and all kinds of diseases are often encountered in the process of planting. If the prevention and control is not timely, it will lead to the growth of flowers. Here are the prevention and control methods of common flower diseases. Take a look at the right medicine.

(1) Root rot

Root rot is a plant disease caused by pathogens in the soil, usually characterized by withered leaves and slow growth, and the whole plant slowly turns yellow and loses its leaves.

The root rot is due to overwatering the plant, drowning the plant and causing the root system to rot.

When root rot occurs, take the plant out of the basin in time, throw away the old soil, cut off the rotten roots, pick the diseased branches and leaves, soak the potassium permanganate solution and replace the new soil into the basin and put it in a ventilated shade.

(2) powdery mildew

Powdery mildew is a common disease, and the probability of occurrence around it will be frequent, which is infected by fungi. Generally in the Meiyu season will be more active, at the beginning of the leaves appear white spots, and then slowly covered the whole leaf, until finally turned gray, pay attention to ventilation and light is the key, powdery mildew will spread slowly.

Found to deal with in time, found that powdery mildew infection, you can timely use a small teaspoon of detergent water to clean the leaves, and then seriously cut off the diseased leaves, timely spray chlorothalonil or methyl thiophanate solution.

(3) anthrax

Anthracnose is a very unpleasant disease, which usually occurs on the leaves of plants, showing that at first there are small spots of water stains on the leaves, and then the dots spread outward, turning into circles of brown spots, gradually spreading to the whole leaf to become brown and dry. The disease spot can form perforation, and the diseased leaf is easy to fall off.

Cutting off the diseased leaves and burning them in time at the initial stage of the disease can prevent expansion; during the onset of the disease, spraying 1000 times of 75% methyl thiophanate wettable powder and 75% chlorothalonil wettable powder, or carbon tetralin wettable powder or 50% carbon Fumei wettable powder. Once every 7 to 10 days, 3 to 4 times in a row, the control effect is better.

(4) Black mold

Also known as soot disease, generally caused by honeydew secreted by aphids, when there are such diseases and insect pests, it means that insect pests will occur. This kind of disease and insect pest will lead to the weakening of leaf photosynthesis, stomatal blockage and leaf shedding.

Prevention and treatment: the effective way to prevent and cure is to wipe the leaves with diluted soapy water.

(5) White silk disease

The whole plant of white silk disease is shown at the base of the root and stem, at first it appears white silk-like hyphae, then slowly affects the leaves, and finally decays and dies. White silk disease is generally produced in the environment of high temperature, high humidity and soil stagnant water, so we should pay attention to water control while paying attention to the overall environment.

Drug prevention and treatment: in the early stage of the disease, you can use silk to dilute 1000 times or Fengqian root protection 600,800 times, or to irrigate the roots of diseased plants with 1% copper sulfate solution or to spray with water spray with wettable powder.

(6) Fusarium wilt

Fusarium wilt is common in all kinds of fruits and vegetables, such as tomatoes, peppers, peas and melons. The symptom is that the top and lower leaves of the plant wither and recover slightly at night. After a period of time, the whole plant will wither.

What is more serious is that it affects the decay of flowers and fruits, which can seriously affect the condition of blooming and fruiting, first showing small spots on the flowers and fruits, and then slowly turning into black leathery patches as the fruit grows.

These are usually caused by random watering caused damage to the roots of plants, the calcium in the soil can not be absorbed by plants, resulting in a lack of water for plant growth, and is prone to disease in hot and dry environments.

As long as the plants are properly maintained, most of them can be avoided and spoiled, and the plants can be kept healthy. Do not water the leaves directly, keep the leaves dry, and do not give plants too much water. This will help avoid infecting most of the diseases and insect pests. If diseases are found, cut off the diseased leaves and branches in time, and spray fungicides in time, such as chlorothalonil or methyl thiophanate solution.

There are six kinds of common diseases of flowers, you should pay attention to prevention in advance in the process of breeding, otherwise it will promote the occurrence of diseases, the above are detailed pest control methods, do not miss yo.

Attention should also be paid to the control of diseases and insect pests of flowers in spring.

Spring is a big world for flowers to grow and transplant, but during this time flowers will also have a variety of diseases. The editor reminded that while reasonably fertilizing flowers and pruning, we should also pay attention to the prevention and control of diseases and insect pests.

Chinese rose

With the rise of temperature and the growth of flowers and trees, all kinds of diseases and insect pests follow. As a manager, flowers and trees should be inspected at any time for symptomatic prevention and treatment. At present, the main chemical pesticides used for pest control are as follows: 1000 times of omethoate for aphids, 2000 times of pyrethroids (such as 2.5% of dimethoate, 20% of quick kill) for Lepidoptera insects, 20% of dicofol for mites, 1000 times of omethoate for scale insects, but the control time must always be in the peak incubation period of the first generation of larvae. The period from mid-May to early June is a critical period. When the young scale forms a protective wax shell, the general pesticide control is very difficult. Prevention and control of diseases is more important than treatment. For those varieties of flowers and trees that are prone to disease, they should be checked frequently. Once a small number of disease spots appear, it is necessary to pay close attention to spraying prevention and control, but there are also some diseases, and germs have invaded as early as the bud. For these diseases, spray control should be carried out as soon as possible. Generally, 70% thiophanate methyl 700-fold solution or 50% carbendazim 500-fold solution can be sprayed every 7 days for 2 to 3 consecutive times for comprehensive control.