How many types of agricultural sprayers are there? How is each type of usage different?

How many types of agricultural sprayers are there? How is each type of usage different? Today we are just a brief introduction for the reference of friends involved in the planting industry!

First, the type of sprayer.

Common sprayers include knapsack sprayers, pedal sprayers, stretcher-type motorized sprayers, electric ultra-low volume sprayers, knapsack motorized spray dusters, tractor-drawn air-delivered sprayers, etc. Among them, the commonly used types are knapsack sprayers, pedal sprayers, and motorized sprayers.

Second, the use of the sprayer.

1. Knapsack sprayer. At present, there are two types: pressure rod type and electric type. The pressure rod type should be pressurized with one hand and the spray head should be held in the other hand; The electric type uses a battery, which is light and labor-saving, and is currently a common spraying tool in rural areas.

When the knapsack sprayer is used, it is necessary to pressurize first, and then turn on the switch to spray, and the pressure should be uniform, and the pressure should not be too large, so as not to damage the sprayer. Clean the sprayer after spraying, and pay attention to maintenance after use.

2. Pedal sprayer. The pedal sprayer is mainly composed of pedal, liquid pump, air chamber and pressure bar, with simple structure and high pressure, which requires 2 people to cooperate with the operation, which is more labor-saving and low cost, and is suitable for family small orchards.

In the process of use, the first thing is to keep the lubrication of the plunger of the liquid pump, keep the oil in the oil injection hole, and screw the oil cap when it is a little longer. After use, drain the liquid medicine in the machine, and then rinse it with clean water.

3. Motorized sprayer. The motorized sprayer is powered by a diesel engine.

Gasoline engines, or sprayers driven by motors, are generally sprayed to control leaf mites and aphids.

Spray heads can be used when controlling some large pests. When spraying, the liquid in the medicine barrel should be constantly stirred to prevent precipitation, and the sprayer should be cleaned with water after spraying. Drain the liquid in the pump and tube.

The common faults of the motorized sprayer during use include inability to absorb water, insufficient pressure, poor atomization, and abnormal machine sound. In winter, if you don't use a sprayer, you should clean the medicine in the machine, and apply lubricating oil to the piston to prevent rust.

Agricultural sprayers are generally divided into three types, namely motorized, electric and manual; The motorized sprayer, its general use cost is relatively high, and the operating environment is relatively poor, the electric sprayer is relatively convenient to use, and the sales are also better, but for the manual sprayer, the efficiency is relatively low, it is not and the intensity of the area of the operation.

Manual, electric, motorized, this is a common type, manual is the need to manually add pressure, to use, electric only need to press the button on it, most of the maneuvering is carried out on some machinery, for example, some unmanned aircraft will use mobile sprayers to spray pesticides.

When spraying pesticides using spray method, it is most appropriate to spray the crop? For farmer friends, spraying drugs is certainly not surprising. Do you know whether the front or back of a pesticide spray leaf?

Which is better? Let's find out together. Contact insecticides depend mainly on where they are sprayed.

Insects may appear more on the surface of the leaves in the morning and on the back of the leaves in the afternoon due to the influence of the sun. At this point, we should take a closer look at where insects are more abundant. Judging beatings.

Fungicides and growth regulators that we should spray on the back of the leaves and why?

<> because the stratum corneum on the back of the plant is thinner, it is easier to absorb, making it easier for the drug to penetrate. Many bacteria infect crops from underneath the leaves, so fungicides work better underneath the leaves. It points directly to the pathogen.

Caused by problems with the way farmers spray vegetables. When spraying, vegetable farmers pay more attention to foliar spraying, about the spray head from the top of the plant downward, and ignore the back of the leaf. At the same time, most of the drugs used by vegetable farmers to prevent diseases are protective fungicides, which have poor internal absorption.

That is, the drug is only very prophylactic if it is sprayed, and the back of the leaves still leaves a chance of infection by pathogens.

In fact, bacteria in vegetables infect the leaves from the back of the leaves, because there are many stomata on the back of the leaves and there is no epidermis to protect them, which creates favorable conditions for the invasion of bacteria. Therefore, vegetable farmers should fully apply pesticides to prevent diseases when spraying, and pay attention to the spraying of the back of the leaves. The spraying method is very simple, the vegetable farmer sprays the nozzle from the bottom of the plant upwards, so that most of the liquid is concentrated on the back of the leaves, so as to have a good sterilization effect, and at the same time, the liquid exposed from the gaps between the leaves will fall to the front of the leaves, thus reducing the waste of the liquid.

At the same time, in order to improve the adhesion of the solution on the back of the leaf, vegetable farmers should also add silicone additives when spraying.

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When spraying pesticides, it should be sprayed on the roots of the crop, which is the most appropriate, but depending on the type of crop, if there is a change in the stem and leaf part of the crop, it should be sprayed on the stem and leaf part.

Can be sprayed on the surface. It's best to spray evenly and not just on one spot.

Spray pesticides with the spray method, spraying the leaves of the crop is fine, preferably not spraying the roots.

The multi-directional sedimentation of smoke. Smoke particles can be deposited in all directions in all parts of the object being treated, including plants, insects, and other objects. For example, the front and back sides of plant leaves, the surrounding surface of stalks, and the parts of insect bodies.

However, when the object to be treated is at rest, there are still many smoke particles deposited on the front.

2.Good permeability of smoke. The fine size of the smoke particles and their ability to float for a long time give them good permeability to the plant canopy.

Therefore, when the aerosol agent is applied in the protected area, the aerosol agent only needs to be stacked in some places, and after the smoke is formed, it can penetrate into the crop bushes on its own, resulting in a good deposition effect. The use of the smoke method can achieve high ergonomics and prevention efficiency.

3.Smoke is heavily affected by air currents. Because smoke particles do not settle easily, they are greatly affected by air currents.

When there is wind on the ground, the smoke drifts with the wind; When there is an updraft on the ground, the smoke also rises with the airflow. Therefore, it is difficult to control the flow direction of smoke in open conditions, and the smoke can only be guided to a certain part by air movement.

4.Thermally induced migration of smoke. When the temperature source dissipation on the surface of the plant is higher than the temperature of the surrounding air, the smoke particles will escape from the plant surface, making the deposition rate on the surface of the plant low, a phenomenon called thermoinduced migration of smoke particles.

When the surface temperature of the plant is significantly lower than that of the surrounding air, smoke particles are more likely to be deposited on the leaves. Therefore, this characteristic can be used to use the aerosol agent when the blade temperature is lower than the ambient air temperature to improve the target deposition efficiency of the smoke. Early morning and late afternoon are the times when the leaf temperature is lower than the ambient air temperature, which is conducive to the application of aerosol agents, and these two periods are often used for the application of smoke in the open field.

5.The deposition density of smoke nucleus source particles is high. The fineness of the smoke particles is very high, so the density of deposits on the crop is also high. Under the same dosage and application conditions, the number of particles (or droplets) deposited per unit area of the smoke method is thousands of times larger than that of the spray method.

The spray gripper is made using the properties of compressed air. Nebulizer, is the abbreviation of spraying equipment, which is an instrument that uses air suction to turn medicine or other liquids into a mist and spray it evenly on other objects, and is an indispensable agricultural tool for the prevention and control of pests and diseases in agriculture.

Compressed air refers to the air after the air compressor does mechanical work to reduce its volume and increase the pressure, which is an important power source.

Compared with other energy sources, compressed air has the characteristics of clear and transparent, no special harmful properties, no dangerous sections, and no fear of overload.

The nebulizer is composed of the residual cavity of the compressed air device, the thin tube, the nozzle, etc., and the operating principle includes Bernoulli's principle, the ultrasonic atomization principle, etc.

Operating environment

Brand model: general

System version: General

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1 Ordinary hand-cranked sprayer, **low, maintenance parts**low. 2. High pressure automatic sprayer, high efficiency, low maintenance rate of wearing parts. 3. Electric sprayer, high efficiency, low labor intensity, easy to use. 4. Motorized sprayer, high working efficiency and good spraying effect.

(1) Spray method. The most commonly used method is to dilute the pesticide preparation with water and atomize the liquid medicine through a sprayer (machine) and spray it evenly on the plants.

2) Irrigation method. After diluting the agent with water, water it directly to the roots of the plant. Watering phosphine, etc., can control underground pests; Watering dimethoate, etc., can control aphids.

3) Root or scatter. Pesticides are applied into the soil or rhizosphere to control grubs, needleworms, mole crickets, nematodes and soil-borne diseases. First, according to the required dosage of medicine, it is fully mixed with fine soil (or fine sand) to make poisonous soil, and then evenly sprinkled on the surface of the soil to control pests moving under the plants or on the soil surface.

For the sake of safety, highly toxic pesticides cannot be made into poisonous soil and sprinkled.

4) Powder spraying method. Use a duster to spread the powder on the surface of the diseased and insect plants, and the powder particles should be fine and uniform, and the spraying should be uniform and thoughtful. This method is suitable for water-scarce areas.

5) Seed dressing and soaking method. Seed dressing is to mix the powder with the seeds in a certain proportion, put it into the seed dresser and stir evenly, and then sow the seeds after the seeds are stuffed for a certain time. Soaking seeds is to soak seeds or seedlings for a certain period of time with a certain concentration of medicinal solution, remove them and dry them before sowing; Generally, the soaking time is 5 40 minutes, and the soaking time is 5 30 seconds.

6) Poison bait method. Use wheat bran, soybean cake, green manure, fresh grass, etc., which pests like to eat, as bait, and mix an appropriate amount of stomach toxic pesticides to make poisonous bait to trap and poison insects. It mainly controls underground pests and mollusks moving on the ground.

7) Fumigation. In closed conditions, volatile or easily decomposable poisonous gases and vaporized agents are used to control pests and other harmful organisms. It is suitable for the control of seed pests, dry-boring pests, greenhouse pests, etc.