Rice field pesticide use method

1, spray method.

This is a spraying method that directly sprays powdered pesticides onto crops and the surface of objects to be controlled by the wind force generated by the dusting tools. The dusting method was once an important method for pesticide application in China because it has no water and high ergonomics.

The advantages of the method are simple, uniform powder distribution, etc., but its disadvantages are poor adhesion and absorption ability of the powder on the crops, and it is easy to drift and cause the loss of powder and pollute the environment. The operator's safety is poor. Commonly used dusting machine has

Harvest -5 type chest-type hand-powder duster, harvest -10 type hand-held powder duster, Dongfanghong -18 mist, dusting dual-use machine. Manual duster is suitable for rice application. Spraying time should be selected in the morning or evening

When there is dew on the material, the powder easily adheres to the crop and better control effects can be obtained. But pay attention to the powder hole not to be wet with dew, so as not to form a group of powder. When dusting, the operator should stand upwind, avoiding the wind

Spray to prevent poisoning from spraying powder onto the body.

2, spread method.

This is an application method in which a shaped granule is directly sprinkled in the field or the pesticide is mixed with soil or fertilizer, and the artificial granule is directly applied. This method has the advantages of small impact on natural enemies, no migration of chemicals, and long duration of efficacy.

The uniformity of the application is not enough. After application, it is required to maintain a certain amount of moisture. At present, the most widely used methods of spreading in China are granules, poisonous soils, and poisonous fertilizers. (1) Sprinkle granules.

Sprinkle the granules directly in the field. (2) Toxic soil.

Pesticides (powders, emulsifiable concentrates, or water agents, etc.) are mixed and mixed thoroughly with the appropriate amount of fine soil and distributed in the field. The fine soil used for toxic soils requires neutrality and micro-tide. Dilute the liquid pesticide with a small amount of water and spray it with a sprayer

In the soil, spray while mixing; powder, granules of pesticides can be mixed soil, while spraying medicine. After mixing and mixing, the soil should be dry and wet, and it should be squeezed and spread. (3) poisoning fertilizer.

Combine fertilization, use suitable granules, and mix thoroughly with chemical fertilizer and spread it.

3, pouring method.

The pouring method includes splashing and pouring roots. Pouring is the use of feces to dilute the diluted chemical on the rice plant. The amount of fluid per mu is 500 kg. This method has high work efficiency, does not require spray equipment, and is simple and convenient. It used to be in the south

Rice fields are more commonly used to control rice pests and diseases. Rooting is a method of application that has been developed with the development of soil-borne diseases in recent years. It has a good control effect on root diseases and has a simple method.

4, spray method.

This is a widely used method of application. It is through the power of the sprayer (machine) to spray the liquid droplets into small droplets, so that the medicament is evenly distributed on the surface of crops or harmful organisms. This method is suitable for milk

Formulations such as oils, liquids, emulsions, wettable powders, soluble powders, suspensions, and water-dispersible granules can be used for stem and leaf treatment and soil treatment. Liquids can be directly contacted and controlled, with even distribution and effective

Fast, effective, and easy to use, but there are also disadvantages such as easy migration of liquids and loss of water. (1) High-volume spray.

Each mu (1 mu, the same afterwards) has a spray volume of more than 40 liters, generally 50 to 75 long, and a droplet size of 400 to 1000 microns. It is a targeted spray method and is suitable for the control of crop base diseases in areas rich in water resources. insect

Harm and used in soil treatment to control farmland weeds. The medical equipment used was Gongnong-16 Knapsack type manual sprayer and Gongnong-36 type motorized sprayer. (2) Medium volume spray.

The spray volume per acre is 13.3 to 40 liters and the droplet size is 250 to 400 micrometers. It is also a targeted spray method and is suitable for controlling rice pests and field weeds in multi-water areas. The medical equipment used is Gongnong-16 back

Negative manual sprayer and 522-C shoulder-mounted manual sprayer. (3) Low volume spray.

The amount of liquid sprayed per mu is 2.5 to 12.5 liters, and the spray droplet size is 150 to 250 micrometers. It is a combination of targeted spraying and drifting spray, which is suitable for controlling crop pests and diseases. The law has fog

Dispersion is good, coverage is high, control effect is good, save pesticides and other advantages, but not suitable for chemical weeding, high toxicity pesticides can not be used this spray method. The used medical equipment is Dongfanghong-18 type motorized sprayer,

Agricultural-16 and 552-C nebulizers. (4) very low volume spray.

The spray volume per acre is 0.5-2.5 liters and the droplet size is 80-150 microns. It is a kind of drift cumulative spray method. It is suitable for preventing and controlling pests in large areas in scarce water areas and should not be used for chemical field weed control. Micro spray

It has the advantages of resistance to rainwater erosion and long effective period, but it is affected by the weather, and it has a large loss of droplets. It requires strict application of pesticide technology, and it easily causes crop injury and human and livestock poisoning. Therefore, it is not a common application method. Drugs used

The machine is Dongfanghong-18 type motorized sprayer. (5) Ultra-low volume spray.

The spray volume per acre is 0.15-0.5 liters, and the droplet size is 15-75 micrometers. It is also a kind of drift cumulative spray method, which is suitable for preventing and controlling fulminant diseases and insect pests in areas with little water, and can not be used for chemical field weed control. Ultra low volume spray

Fog has the advantages of high work efficiency, saving of pesticides, timely prevention and control, and no use of water. However, the operating technique is strict and there are more droplets drifting. Improper application can cause injury.

5, seed dressing method.

The seed dressing method is to uniformly mix the medicine and the seed, so that the surface of the seed is covered with a layer of medicine powder or a medicine film to prevent and control the underground pests, seedling pests and seed-borne diseases. This method is suitable for powders, wettable powders, milk

Formulations such as oils and water agents have the advantages of high work efficiency, good control effect, no impact on natural enemies, and not limited by water sources. In the case of powder dressings, the pesticides and seeds can be uniformly mixed in a seed dressing or other apparatus. With wettable powder

In the case of dressings, emulsifiable concentrates, or liquid preparations, the dilution solution should be proportioned first, and then the sprayer should be used to spray the liquid onto the seed and spray and mix. After dressing seed, it is best to heap stuffy for 2 to 3 days, so that the pesticide is fully absorbed by the seeds to give full play to pesticides

Some performance.

6, dipping method.

Dipping method is to dilute the pesticide after adding water, soak the seeds or seedlings in the liquid, so that the seeds and seedlings absorb and adhere a part of the medicament to prevent pests and roots and promote buds and seedlings. This method is suitable for such formulations as emulsifiable concentrates, liquids, and wettable powders. It has the advantages of less labor, good seedling preservation, and less pesticides.

7, bait method.

The bait method uses baits (various grains, sugar bran, potatoes, edible oil residues, etc.) and a pair of counterparts with stomach poisons to make baits. It is sprinkled in the field to prevent and control underground pests and rodents. Application method.

This method is suitable for powder, wettable powder, emulsifiable concentrate, and liquid formulations. When used, fresh baits with good palatability should be selected to prepare the bait and, depending on the feeding habits of pests and rodents, the bait should be placed in the early morning or early evening on a sunny day.

Adding baits at the seedling stage of crops is generally performed in the evening or after rain, and the effect is better.

8, fumigation method.

The fumigation method is a method of applying pesticides using a toxic gas produced by a fumigant or an easily volatile agent. This method is applicable to warehouses, greenhouses, soils, or places where the crops are dense. It has the advantages of high control efficiency, quick action, etc.

Operational technical requirements are high and application conditions are stricter. When fumigating in the warehouse, it must be ensured that the seal is good, and after the fumigation is completed, it must be fully ventilated so that the toxic gas escapes. When the soil is fumigated, it can use the water's sealing effect, ie on the treated soil surface.

Spray a layer of water to delay the escape of fumigant. When fumigating between crop lines, dense crops and appropriate temperature conditions should be selected and conducted on sunny days.

9, smoke method.

Flue-curing method is a method of spraying pesticides by igniting the smoke or by directly heating the original medicine to produce fumes. This method is suitable for use in closed environments (such as warehouses, greenhouses) or in high canopy areas, such as in the late growth stage of field crops.

use. The smoke gas produced by the agent should have good diffusion and appropriate settlement penetration, and the space residence time should be longer, but it should not be excessively floating, so as to obtain good results.

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