Ear wax, or [cerumen," is present in the ear on purpose. For the vast majority of people, wax removal is completely unnecessary. (Yes, you should pay attention to the warning on the Q-tips® box.)
The ears are designed to self-clean. They should almost always function normally by sloughing off ear wax as necessary, discarding it outside the ear. Sometimes people experience a hardening of ear wax.
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First, the characteristics of smoke agent The use of smoke agent for smoke prevention and control, no equipment, easy to use, save time and labor, the operator can ignite the smoke agent to leave. The smoke of the smoke agent can pervade all corners of the shed. The disinfection and sterilization effects are thorough and uniform, and generally do not cause disease resistance, avoiding the waste of conventional spray pesticides.
Second, the choice of dosage form should be controlled according to different diseases to choose the appropriate smoke agent. For example, before the colonization of the greenhouse, chlorothalonil smoke may be used for the initial control. When tomato and cucumber in the greenhouse occur leafy mildew, it can be controlled by quick-kering smoke agent. If multiple diseases occur at the same time, compound smoke agent is used for prevention and control. At present, sulfur compounds, chlorothalonil and xanthosine are the three types of smoke agents that are suitable for production. Sulfasulfuron is mainly used to control gray mold. Sulfur and chlorothalonil have different degrees of effect on various diseases. Sulfur is used to control powdery mildew, and chlorothalonil is more effective for downy mildew.
Third, the use of methods and precautions
1. Use conditions. The smoke agent uses the smoke as the carrier to achieve the purpose of spraying. Therefore, before using the smoke agent in the greenhouse, it is necessary to check the surface of the shed, make up the loopholes, and make the shed face closed tightly. The more effective the strict prevention and control effect is.
2. The time of medication. Smoke agent is a protective bactericide and has no systemic effect. Therefore, it must be used at the early stage or before the onset of disease. It is advisable to use the smoker's time to cover the grass curtains in the evening, and it is better to use the smoke agent to ignite the smoke on cloudy days and snow evenings. This is because under the sunlight, the surface temperature of the plants is the same as the temperature of the smoke particles, and the smoke is not easy to deposit and affect the efficacy.
3. Application methods.
1 The determination of the discharge point: The space in the shed is large, and all kinds of smoke agents with active ingredients can be used. The content of active components of the smoke agent is relatively low (10% to 30%), and the burning point can be less, and 3 to 5 points per 667 square meters can be set; the content of the active ingredient of the smoke agent is high, so as to prevent the burning point near due to long time High concentrations of smoke caused by fumigation caused by phytotoxicity, each 667 square meters of firing point should be increased to more than 5; more short sheds; should use low active ingredient content (10%, 15%) of the smoke agent, the firing point can be increased appropriately , generally 7 to 10 per 667 square meters; height of less than 1.2 meters in the shed, should not use smoke, otherwise it is easy to cause injury.
2 The dosage should be suitable: The dose should be determined according to the size of the greenhouse, the concentration of the pests and the effective content of the smoke. Under normal circumstances, the amount of common smoke agent is 0.30-0.4g/m3, equivalent to 300-400g of smoke agent per 667m2. The existing smoke agents are styling products produced by pesticide companies, such as 45% of chlorothalonil smoke, 10% of fast smoke, 15% of carbendazim, and 22% of dichlorvos (for pest control). Smoke agents, such as the control of greenhouse cucumber downy mildew, epidemic diseases, tomato early blight, gray mold, late blight, etc., can choose 45% chlorothalonil smoke agent, 200 to 250 grams per 667 square meters of medication. To prevent cucumber powdery mildew, sulfur powder and sawdust can be mixed and prepared. Each 667 square meters of sulfur powder 250 grams, 500 grams of sawdust, with the appropriate amount of sawdust adsorption on the tile, according to requirements placed on the point of smoke smoke. The use of smoke agents is usually applied once every 8 to 10 days, and the effect is better when applied twice. The greenhouses with serious diseases or poorly closed ones can be increased in doses.
3 Application method: Smoke should be reasonably laid according to needs, and use wire, masonry, etc. as a support, and the smoke agent should be 20-25cm away from the ground. When it is fired, it should be taken from the inside to the outside of the shed. Mosquito coils, cigarettes and other first kind of ignited, and finally lit the shed mouth of the smoke agent, all lit, immediately leave the greenhouse, quickly closed the greenhouse overnight, the next morning open the greenhouse ventilation vent, ventilation can be completed before entering the shed.
Winter and greenhouse vegetables prevent disease should use aerosol
The use of aerosols (hereinafter referred to as “smoke agentsâ€) in winter and spring sheds has unique effects in preventing and treating diseases, and its control effect is significantly better than spraying, dusting, and other spraying methods, especially in the rainy days or disease epidemics. obvious.