What do you know about the scientific application skills of agricultural high efficiency fungicides?

Pesticides are mixed with pesticides. The compound of pesticides is generally common"Organophosphates"different kinds of compounds, such as the compound of dichlorvos and dimethoate; The compound of organophosphorus and pyrethroids, such as the compound of organophosphorus and carbamate, the compound of insecticide and amidine, etc. Compounded and mixed use of pesticides and fungicides.

Compound insecticides and fungicides, which have both insecticidal and fungicidal effects, are used when crops are sown"Seed dressing pesticides", most of them belong to this category, such as carbendazim and methylisophosphine, carbendazim and carbofuran, etc.

The use of highly effective agricultural fungicides must be used before the onset of disease in the crop, or at the beginning of the occurrence of the disease. It can also be done by spraying. Spraying is the use of spraying instruments to disperse the liquid medicine into fine fog points under a certain pressure or centrifugal force to evenly cover crops or weeds, which is the most widely used method in production at present.

It is necessary to choose the appropriate concentration, pay attention to the combination of pesticides, pay attention to the medicinal properties of pesticides, and observe the shelf life of fungicides in time. Spray in small quantities and multiple times.

Avoid using it in a dry environment under sunlight, use it according to the instructions, check the precautions in time, wear protective clothing, wear a mask, and avoid poisoning.

What I learned is that the use of this fungicide can directly prevent pests and diseases, and can kill most of the pests and diseases, and also need to add some water to dilute it when using the medicine, so that it will have a medicinal effect, otherwise it may lead to the direct death of our plants.

Be sure to prescribe the right medicine, and then you should also choose the right fungicide, in the prevention of diseases must be sprayed some pesticides in advance to ensure that the light is sufficient, you need to spray some pesticides regularly, and you also need to choose some fungicides that are less harmful to the surrounding environment.

Be sure to choose the appropriate fungicide according to the situation of the crop, pay attention to the time of use, do not use it when the temperature is relatively high or windy, pay attention to the concentration, and pay attention to the efficacy.

Pay attention to the spraying time, pay attention to the method of spraying, do not spray before rain, choose safe and pollution-free, and pay attention to the concentration of fungicides.

The concentration of fungicides is different, and the proportioning must be strictly followed by the instructions. Too high a concentration can damage the crop. Do not water immediately after using fungicide:

If the chemical solution is diluted, the sterilization effect will deteriorate. Therefore, try not to water the roots with fungicides for a few days after irrigation. Proper irrigation in plant pits is a key technology for the efficient use of fungicides.

Reasonable concentration of distribution: when using fungicide spray, the appropriate concentration of fungicide must be prepared or diluted with water, and the different concentrations of fungicides in use have their special requirements, if the concentration is too low, it can not meet the control requirements.

Rinsing and inhaling ** agents can also produce twice the effect with half the effort, and how to use fungicides efficiently is of great significance to improve crop yields. Let's talk about the key technologies for the efficient use of fungicides. Therefore, according to the law of occurrence, fungicides must be used for a long time, and the specific situation of the occurrence of diseases of different crops must be carried out.

Often, long-term use of a single biocide (mainly an in-house biocide) leads to resistance to pathogens and renders the biocide used ineffective.

Different types of biocides can be used interchangeably, or borrowed from biocides refer to chemicals that effectively control or kill microorganisms – bacteria, fungi and algae in water systems. It is mainly divided into two types: agricultural fungicides and industrial fungicides. The key technology of domestic fungicides and the efficient use of fungicides, timely spraying of fungicides or premature spraying of fungicides will affect the control effect.

It is a protective fungicide, so protective measures can be taken in advance before the disease occurs.

In addition, for the invasion of diseases, the spraying time is usually too late, which will lead to a large number of pathogenic bacteria in the early stage of infection, which plays a certain role, blocking the life cycle of crops and reducing the possibility of crop growth. The protective role of fungi in agricultural production is increasingly recognized by farmers. With the modernization of China's agriculture, the development of fungicides is also accelerating.

Fungicides are collectively known as fungicides, which can kill or inhibit the growth of pathogens, and how to effectively use fungicides in production is of great significance to improve crop yields.

First of all, when using fungicides, you should prescribe the right medicine, do not miss spraying, and at the same time, do not spray too much, must be in moderation, choose some fungicides that do not pollute the environment, and when spraying fungicides, you must wear protective clothing and goggles.

The proportioning should be carried out in strict accordance with the instructions. Do not water immediately after using fungicide, try not to water the roots with fungicide for a few days after irrigation, and control the dosage.

Rational allocation of concentrations.

Whether it is an aqueous or wettable drug, the water needs to be diluted before spraying. Different fungicides are required to be used in concentrations, so they should be proportioned in strict accordance with the instructions, and reasonable concentration is more conducive to the effectiveness of fungicides. If the ratio is arbitrary, the concentration is too high and will cause pesticide damage to the crop; The concentration is too low to meet the control requirements.

Appropriate time to spray.

The time of spraying fungicides is directly related to the control effect, and spraying too early will cause waste of pesticides and reduce the control effect. Late pathogens are already causing damage to crops. Therefore, it is necessary to use drugs in time according to the occurrence of different diseases, the best forecast and the specific situation. In general, the time of administration of fungicides can be selected before or at the beginning of the disease.

Improve the quality of medication.

The quality of fungicides includes the quantity of drugs, the number of times and the quality of spraying. The amount of drugs should be appropriate, too much medication will increase the cost and cause drug damage, too little and can not achieve the prevention and control effect, so according to the specific situation to increase or decrease.

This needs to be determined according to the growth of the plant, the fungicide used by different plants is completely different, and the root is determined according to the disease of the plant, and it needs to be used according to the plant and the weather. Zheng Fu.

When quietly choosing fungicides, it is necessary to be targeted, to choose the appropriate concentration ratio, but also to choose a reasonable agent for imitation cherry, to pay attention to the direction when spraying, but also to pay attention to the great intention to protect themselves.

The first line of shivering should first put the fungicide in a hole of slag containers, then pour water and stir well, and then pour it into a large watering can, so that it can be easily sprayed, and it can also be easily solved by trembling, and it is not troublesome at all.

It is necessary to observe the growth of each germ, understand the situation of each germ, and learn to read the description of the fungicide, prescribe the right medicine according to the disease of different Zheng liquid, and master the law of Hengcong Yin, and at the same time formulate countermeasures.

First of all, the dismantling of the stove is to choose the right insecticide infiltration according to different crops, and it is also necessary to pay attention to the concentration, and it is necessary to pay attention to the cost performance, must pay attention to the quality of the brand, and must pay attention to the preparation of equipment when using, and must choose the content of the ingredients.

When using pesticides, we must grasp between 22 degrees and 28 degrees, so that we will not destroy the activity of agricultural acacia as a silver trace, and then we must choose some of the same effect is better, but will not pollute the environment, you can also choose a new type of protective agent, we must pay attention to the appropriate seed coat and the appropriate amount.

First of all, we should prescribe medicine to Heliang, and at the same time, we need to choose the right pesticides, pay attention to the proportion and dosage of Hepaibi pesticides, improve the insecticidal rate of pesticides, and ensure that they do not pollute the environment.

Bacterial limb biological pesticides have the advantages of high insecticidal rate, no pollution of the environment, harmless to humans and animals, and no induction of pests to produce resistance. Because the weather conditions at the time of use will affect the bacterial hunger and wildness in the bacterial pesticides, so as to affect the control effect, it is necessary to pay attention to the weather conditions at the time of use. The spores of bacteria in bacterial biopesticides like a humid environment, so the higher the humidity in the field, the higher the efficacy, especially when spraying powdered biological agents.

Pay attention to the temperature, pay attention to the time of spraying, but also pay attention to the concentration of spraying, pay attention to the way of spraying, and it must be targeted.

Bacterial pesticides have a high insecticidal rate and are more toxic to people and people. However, when spraying bacterial pesticides, the side temperature of the air residue needs to reach 25 degrees, such as clump oak or above, and the best effect is achieved. In addition, the humidity in Zhengyu's field is higher.

Bacterial biopesticides have the advantages of high insecticidal rate, no pollution to the environment, harmless to humans and animals, and no inducing pests to develop resistance. It is a new type of protective agent that is currently popularized and applied in pollution-free cultivation of vegetables. Because the weather conditions during use will affect the bacterial activity in bacterial pesticides, thus affecting the control effect, it is necessary to pay attention to the weather conditions during use.

Look at the temperature: According to the experiment, the efficacy of bacterial biopesticides applied at a temperature of 25 °C to 30 °C is 1 to 2 times higher than that at a temperature of 10 °C to 15 °C. The bacterial spores in bacterial biopesticides like a humid environment, so the higher the humidity in the field, the higher the efficacy, especially when spraying powdered biopesticides, it is necessary to pay more attention to the humidity in the field.

Generally, spray fungus powder in the early morning and evening when there is dew, so that the fungus can better adhere to the stems and leaves of crops, promote the reproduction of spores, and improve the efficacy of the drug. <>

Choose the right weather environment. Practice has proved that when the temperature is high and the humidity is high, the pest dies quickly and the effect is good; The best effect is achieved when the temperature is above 20 and the relative humidity of the air is above 85%. In order to avoid damage to the spores and crystallization toxins in the microbial agent caused by ultraviolet rays in the sun, it is best to use it in the afternoon or on a cloudy day; Rain 5 hours after application will not reduce the efficacy.

On the contrary, it will accelerate the death of pests. The powder spraying method should be sprayed in the morning, evening, dew or light rain, so that the fungus powder can effectively adhere to the stems and leaves of the crop. <>

In direct sunlight, the spore mortality rate can reach about 50%; In direct sunlight for 1 hour, the spore mortality rate can reach 80%. In addition, ultraviolet radiation can deform paraspore crystals and reduce their effectiveness. Therefore, it is best to spray bacterial biopesticides in the evening or on cloudy days.

Fourth, look at the rain: Soon after spraying bacterial biological pesticides, if there is moderate heavy rain, the bacterial liquid sprayed on the stems and leaves of crops will be washed away, reducing the efficacy of pesticides; However, if there is light rain after 5 hours of spraying, it will not only not reduce the control effect, but will have a synergistic effect. Five look at the wind:

The application of bacterial pesticides on windy days is wasteful, especially powders, and the losses are even greater. At the same time, windy days are not conducive to the germination of spores. Therefore, bacterial insecticides should be used on calm or breezy days.

First, spraying powdered biological pesticides should pay more attention to field humidity. Generally, bacterial powder is sprayed in the early morning and evening when there is dew, so that the bacterial agent can better stick to the stems and leaves of crops, promote the reproduction of spores, and improve the efficacy. Second, soon after spraying bacterial biological pesticides, in case of moderate to heavy rain, the bacterial liquid sprayed on the stems and leaves of crops will be washed away and the efficacy will be reduced; However, if it rains lightly after 5 hours of application, it will not only not reduce the control effect, but will have a synergistic effect.

First, choose a day when the weather is fine, second, the temperature should not be too high, third, it should not be rainy, fourth, the light should not be too strong, and fifth, it should not be at night.

Technical points of bacterial pesticide application: 1. Spray application; 2. Wormhole injection and application; 3. Applying pesticides to buried soil roots; Fourth, foaming and application; 5. Poison soil application; 6. Watering and applying pesticides.

First of all, it is necessary to avoid rainy days, or when the temperature is relatively high, and then according to different crops or different growth conditions, to choose the appropriate pesticide and dosage, but also should do a good job of personal protection, to wear protective clothing.

What is the knowledge of pesticide application methods? In the effective concentration range, and can exert the effect of pesticides, the pesticide concentration can be reduced for control. According to the disease, pest activity law and pesticide type, choose different application methods and application time.

Reasonable rotation and mixed use of pesticides can effectively improve the control effect of pesticides, but it should be noted that pesticides that decompose and fail in case of alkaline substances cannot be mixed with alkaline pesticides, fertilizers or alkaline substances, and pesticides that produce fertilizer reactions after mixing can not be used.

In order to control insect pests and rodents in the soil, the development of pests and pesticide use methods should be a reflection of the development of pesticide formulations. In other words, the emergence of a new method of use must be backed by a new pesticide dosage form. It is a mutually reinforcing and complementary rodent pest, and the stomach poison and pesticides are preferentially mixed in the soil, and the reasonable mixing of various pesticides can significantly improve the control effect.

In the actual process of Cordyceps control, we often find that multiple diseases, plagues or weeds occur at the same time. If we only use two or more pesticides in proportion and kill the disease according to different insecticide principles, or add a small amount of throwing or spraying granular insecticides. This can not be used to effectively improve the effect of pesticide control, reduce the resistance to crops and pests and diseases, and the application of pesticides on crops must be scientific.

Including the back of the leaves of the plant, so the control effect is better. The fumigation method is mainly used in small enclosed environments, which can easily cause damage to the drug. Therefore, it is necessary to master the correct dosage and use methods, strictly implement the technical regulations, and not change them at will, especially to control the drugs, ensure the quality of pesticides, and only use drugs in large doses.

Try not to mix pesticides indiscriminately or use the same highly toxic pesticide multiple times, and do not arbitrarily expand and choose the appropriate use of the convenient gold coin method. High-quality pesticides should only be used as species and modifications in combination with appropriate application methods.