Pesticides must be formulated before use to feed crops. The preparation of pesticides is a state in which commercial pesticides can be formulated for application. Generally, it is necessary to calculate, measure, and mix the pesticides and ingredients, and the correct preparation of pesticides is an important technology for safe, efficient, and rational use of pesticides.
First, calculate the amount of pesticides and ingredients
The amount of the pesticide to be used is calculated based on the content of the active ingredient of the preparation, the amount of the active ingredient per unit area, and the application area.
1. If the pesticide label or the instruction manual is marked with the pesticide preparation per unit area, the dosage of the pesticide preparation can be calculated by the following formula:
Pesticide dosage = pesticide dosage per unit area (ml / mu) × application area (mu).
2. The dosage of the active ingredient per unit area on the pesticide label can be calculated by the following formula:
Pesticide dosage = × application area (mu).
3. If you know the dilution of the pesticide preparation (ie, the concentration of the spray solution), you can use the following formula to calculate the amount of pesticide preparation:
Pesticide dosage = .
Second, accurately prepare pesticides
Accurate formulation of pesticides is a basic requirement for safe, efficient and rational use of pesticides.
1. Calculate the dosage of the pesticide preparation and the dosage of the ingredients (usually the amount of water added), and take it according to the calculated amount or weigh it;
2, liquid pesticides can be used with scaled measuring tools such as measuring cups, measuring cylinders, preferably with a syringe; solid and large packaging powder pesticides should be weighed with scales; weighing a small amount of pharmaceuticals should be scaled with gram scales or balances; small packaging powder pesticides When there is no weighing tool, it can be divided by the equal division method, which is more accurate.
3. After the pesticide and ingredients are taken (quantity), they should be mixed and prepared in a special container, and evenly stirred with a tool (not by hand).
Third, the preparation of pesticides
When farmers and farmers are preparing pesticides, they will inevitably be exposed to pesticides. Some of the preparations contain high levels of active ingredients, which pose a high risk of poisoning. Special attention should be paid to safety during preparation.
1. It is not advisable to use pesticide caps to pour pesticides, which is easy to spill and cause percutaneous poisoning; do not use water tanks to dispense medicines, residual liquids are easy to cause people and animals to eat; can not use medicine containers directly to rivers, ditch, ponds, Take water from the pool; do not allow it to reach into the liquid or powder to stir.
2, open the pesticide packaging, weighing and preparation process, the operator should wear the necessary protective equipment.
3. Agricultural and forestry plant protection personnel and pesticide preparation personnel must undergo professional training, master the necessary operating techniques, and be familiar with the performance of the pesticides used.
4. Pregnant women and lactating women are not allowed to participate in pesticide preparation.
5. Formulated pesticides should be kept away from residential areas, livestock pens and water sources; liquid medicines should be used with the equipment, and the remaining liquids should be sealed; the pesticides that have been opened should be sealed in the original packaging and must not be transferred. Go to other packaging (such as food packaging or beverage bottles).
6. Dispensing equipment requires special use. It should be washed after each use. It is not allowed to be cleaned in rivers, streams, ponds, ponds, dams and wells.
7. A small amount of residual and unnecessary pesticides should be buried deep in the pit; be careful when handling powder pesticides to prevent dust from flying and polluting the environment.
8. Spray pesticides. Do not overfill the sprayer to avoid leakage of the liquid. It is better to use it on the same day.
Author: Guo Jianping
First, calculate the amount of pesticides and ingredients
The amount of the pesticide to be used is calculated based on the content of the active ingredient of the preparation, the amount of the active ingredient per unit area, and the application area.
1. If the pesticide label or the instruction manual is marked with the pesticide preparation per unit area, the dosage of the pesticide preparation can be calculated by the following formula:
Pesticide dosage = pesticide dosage per unit area (ml / mu) × application area (mu).
2. The dosage of the active ingredient per unit area on the pesticide label can be calculated by the following formula:
Pesticide dosage = × application area (mu).
3. If you know the dilution of the pesticide preparation (ie, the concentration of the spray solution), you can use the following formula to calculate the amount of pesticide preparation:
Pesticide dosage = .
Second, accurately prepare pesticides
Accurate formulation of pesticides is a basic requirement for safe, efficient and rational use of pesticides.
1. Calculate the dosage of the pesticide preparation and the dosage of the ingredients (usually the amount of water added), and take it according to the calculated amount or weigh it;
2, liquid pesticides can be used with scaled measuring tools such as measuring cups, measuring cylinders, preferably with a syringe; solid and large packaging powder pesticides should be weighed with scales; weighing a small amount of pharmaceuticals should be scaled with gram scales or balances; small packaging powder pesticides When there is no weighing tool, it can be divided by the equal division method, which is more accurate.
3. After the pesticide and ingredients are taken (quantity), they should be mixed and prepared in a special container, and evenly stirred with a tool (not by hand).
Third, the preparation of pesticides
When farmers and farmers are preparing pesticides, they will inevitably be exposed to pesticides. Some of the preparations contain high levels of active ingredients, which pose a high risk of poisoning. Special attention should be paid to safety during preparation.
1. It is not advisable to use pesticide caps to pour pesticides, which is easy to spill and cause percutaneous poisoning; do not use water tanks to dispense medicines, residual liquids are easy to cause people and animals to eat; can not use medicine containers directly to rivers, ditch, ponds, Take water from the pool; do not allow it to reach into the liquid or powder to stir.
2, open the pesticide packaging, weighing and preparation process, the operator should wear the necessary protective equipment.
3. Agricultural and forestry plant protection personnel and pesticide preparation personnel must undergo professional training, master the necessary operating techniques, and be familiar with the performance of the pesticides used.
4. Pregnant women and lactating women are not allowed to participate in pesticide preparation.
5. Formulated pesticides should be kept away from residential areas, livestock pens and water sources; liquid medicines should be used with the equipment, and the remaining liquids should be sealed; the pesticides that have been opened should be sealed in the original packaging and must not be transferred. Go to other packaging (such as food packaging or beverage bottles).
6. Dispensing equipment requires special use. It should be washed after each use. It is not allowed to be cleaned in rivers, streams, ponds, ponds, dams and wells.
7. A small amount of residual and unnecessary pesticides should be buried deep in the pit; be careful when handling powder pesticides to prevent dust from flying and polluting the environment.
8. Spray pesticides. Do not overfill the sprayer to avoid leakage of the liquid. It is better to use it on the same day.
Author: Guo Jianping
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