In the process of applying herbicides in fruit tree nurseries, the type, dosage form, dosage and method of use should be determined according to the growth of seedlings, weeds and weather conditions. Otherwise, the ideal herbicidal effect will not be obtained, and the phytotoxicity will be suffered instead. There are two ways to apply herbicides:
First, the spray method: suitable for spraying herbicide dosage forms are wettable powder, emulsifiable concentrate and water. It is generally required that the sprayed spot has a diameter of less than 100 to 200 microns. The fog is too large, the adhesion is poor, and it is easy to lose; the fog is too thin, and it is easy to be blown away by the wind, and the amount of adhesion is reduced.
The preparations to be prepared at the time of dispensing include: a water tank, a water bucket, a filter gauze, a stirring tool, and the like. In order to make the dispensing quantity accurate, the container, the fixed dose, and the fixed water volume should be fixed, so as to avoid mistakes. The dosage should be weighed in advance with a balance or a relatively accurate small scale according to the size of the container, and subcontracted, one pack for each dispense. Draw a fixed water line in a fixed bucket and take water every time. Wrap the weighed medicinal gauze, dissolve it with a small amount of water, then remove the residue from the gauze and dilute it with the required amount of water to prepare a liquid. It is also possible to dissolve the quantitative drug in a small amount of water, stir it into a paste, and add a certain amount of water to stir evenly, which is a drug solution. The amount of water is preferably 30 kg to 50 kg per mu. The syrup should be used now and should not be stored for a long time.
Second, the poisonous soil law. Poisonous soil is a mixture of chemicals and fine soil. The fine soil is generally sieved through a sieve of No. 10 to No. 20. Don't be too dry, don't get too wet, use your hands to squeeze into a group, and loosen the soil mass to spread it out. The amount of soil is subject to uniform application, generally 15 to 20 kg per mu. If it is a powder, it can be directly mixed with soil; if it is emulsifiable, it should be diluted with water, then sprayed on the fine soil with a sprayer and mix well. If the amount of the agent is small, mix it with a small amount of soil and the agent, then mix it with the whole amount of soil and spread it evenly.
First, the spray method: suitable for spraying herbicide dosage forms are wettable powder, emulsifiable concentrate and water. It is generally required that the sprayed spot has a diameter of less than 100 to 200 microns. The fog is too large, the adhesion is poor, and it is easy to lose; the fog is too thin, and it is easy to be blown away by the wind, and the amount of adhesion is reduced.
The preparations to be prepared at the time of dispensing include: a water tank, a water bucket, a filter gauze, a stirring tool, and the like. In order to make the dispensing quantity accurate, the container, the fixed dose, and the fixed water volume should be fixed, so as to avoid mistakes. The dosage should be weighed in advance with a balance or a relatively accurate small scale according to the size of the container, and subcontracted, one pack for each dispense. Draw a fixed water line in a fixed bucket and take water every time. Wrap the weighed medicinal gauze, dissolve it with a small amount of water, then remove the residue from the gauze and dilute it with the required amount of water to prepare a liquid. It is also possible to dissolve the quantitative drug in a small amount of water, stir it into a paste, and add a certain amount of water to stir evenly, which is a drug solution. The amount of water is preferably 30 kg to 50 kg per mu. The syrup should be used now and should not be stored for a long time.
Second, the poisonous soil law. Poisonous soil is a mixture of chemicals and fine soil. The fine soil is generally sieved through a sieve of No. 10 to No. 20. Don't be too dry, don't get too wet, use your hands to squeeze into a group, and loosen the soil mass to spread it out. The amount of soil is subject to uniform application, generally 15 to 20 kg per mu. If it is a powder, it can be directly mixed with soil; if it is emulsifiable, it should be diluted with water, then sprayed on the fine soil with a sprayer and mix well. If the amount of the agent is small, mix it with a small amount of soil and the agent, then mix it with the whole amount of soil and spread it evenly.
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