1, dusting method.
This is a method of applying the wind power generated by the dusting machine to directly spray the powdered pesticide onto the surface of the crop and the object to be treated. The dusting method used to be an important method of application in China because it has the advantages of no water, high work efficiency, simple method, uniform distribution of powder, etc., but its disadvantage is that the powder has poor adhesion and absorption on crops, and it is easy to drift. It causes loss of powder and pollutes the environment, and it is less safe for operators. The commonly used dusting machine has a harvest-type-5 chest-lifting hand-pulled duster, a harvest-type-10-type hand-cranked duster, and a Dongfanghong-18 mist and dusting machine. The manual duster is suitable for rice application. The dusting time should be selected when there is dew on the morning or evening crop, and the powder is easy to adhere to the crop and can obtain better control effect. However, it should be noted that the powder holes should not be wet with dew to prevent the powder from forming a mass. When spraying, the operator should stand on the wind and avoid blowing in the wind to prevent the poison powder from being sprayed onto the body and causing a poisoning accident.
2, cast a law.
This is a method of applying the processed granules directly into the field or mixing the pesticide with soil or fertilizer and applying it directly by hand. The method has the advantages of little influence on natural enemies, no floating of the medicament, and long duration of application, but the uniformity of the application is not enough, and it is required to maintain a certain moisture after application. At present, the most commonly used methods of application in the country are granules, toxic soils and poisonous fertilizers. (1) Sprinkle granules. Sprinkle the granules directly into the field. (2) Saving poisonous soil. Mix the pesticide (powder, emulsifiable concentrate or water, etc.) with a proper amount of fine soil and mix well, then spread it in the field. The fine soil used for poisonous soil requires neutrality and slight tide. The liquid pesticide is first diluted with a small amount of water, sprayed on the soil with a sprayer, and sprayed while mixing; powder, granules and pesticides can be mixed with soil and sprayed. The mixed soil should be dry and wet, pinched and spread. (3) Spreading poisonous fertilizer. In combination with fertilization, select suitable granules, mix well with fertilizer and apply.
3, pouring method.
The pouring method includes two methods of pouring and pouring. The pouring is carried out by pouring the diluted medicament onto the rice plant with a dung scoop, and the amount of liquid per acre is 500 kg. This method has high work efficiency, no need for spray equipment, and simple method. It has been widely used in southern rice areas to control rice pests and diseases. Rooting is a method of application in recent years with the development of soil-borne diseases, which has a good effect on the control of plant root diseases and a simple method.
4. Spray method.
This is a commonly used method of application. It is sprayed by a sprayer (machine) to spray a small droplet of atomized liquid to evenly distribute the agent on the surface of crops or harmful organisms. The method is applicable to agricultural pesticides such as emulsifiable concentrates, aqueous preparations, concentrated emulsions, wettable powders, soluble powders, suspending agents and water-dispersible granules, and can be used for stem and leaf treatment as well as soil treatment. The liquid medicine can be directly contacted and controlled, and has the advantages of uniform distribution, quick effect, quick effect, simple method, and the like, but there are also disadvantages that the liquid is easily drifted and lost, and a good water source is needed. (1) High volume spray. The spray volume per acre (1 mu, the same time) exceeds 40 liters, generally 50-75 long, and the droplet size is 400-1000 micrometers. It is a targeted spray method and is suitable for controlling crop-based pests and diseases in water-rich areas. And used in soil treatment to control weeds in farmland. The medical equipment used is the Gongnong-16 type knapsack manual sprayer and the worker-36 type motorized sprayer. (2) Medium volume spray. The spray volume per acre is 13.3~40 liters, and the droplet size is 250-400 microns. It is also a targeted spray method, which is suitable for controlling rice pests and farmland weeds in many water areas. The medical equipment used is the Gongnong-16 type knapsack manual sprayer and the 522-C shoulder-mounted manual sprayer. (3) Low volume spray. The spray volume per acre is 2.5-12.5 liters, and the droplet size is 150-250 micrometers. It is a combination of targeted spray and drift spray, which is suitable for controlling crop leaf pests and diseases . The method has the advantages of good dispersion of mist droplets, high coverage, good control effect, and saving of pesticides, but it is not suitable for chemical weeding, and this spraying method cannot be used for highly toxic pesticides. The medical equipment used was Dongfanghong-18 motorized sprayer, Gongnong-16 and 552-C sprayer. (4) Very low volume spray.
No-alkali accelerator are used to increase the rate of concrete strength development or to reduce concrete setting time. It is non-toxic, non-corrosive, non-flammable, chlorine-free, harmless to human health, low in springback, no dust and no pollution during construction, which can greatly improve the construction environment .
Concrete Accelerator,No Alkali Accelerator,Concrete Accelerator Agent,Cement Accelerator
NINGBO LUCKY CHEMICAL INDUSTRY CO. LTD , http://www.chinaluckychem.com