Disease prevention and control includes two levels of meaning, one is prevention, mainly refers to temperature and humidity regulation; the other is governance, that is, chemical control.
The central diseased strain was found to have been treated with drugs. How can we find the central disease in time? In the morning before the sun enters the shed, the humidity is the greatest. Look for symptoms of lesions.
The principle of drug selection - to buy products from regular manufacturers, choose high efficiency, low toxicity and low residual drug, do not buy three products.
Medication principle: preferred smoke or dust agent (dust need duster). Select the spray dosage form.
The first choice of compound drugs, the second choice of mixed drugs. Complex drugs are compound drugs. A simple understanding is that pesticide manufacturers give good drugs. Mixed drugs refer to the purchase of two or more kinds of drugs by themselves, and they are prepared by mixing themselves; this situation should be prudent, to understand the acidity and alkalinity of the mixed drugs, etc., and to confirm that compounding does not affect the efficacy of drugs before they can be mixed. Mixed drugs generally can not exceed 3 kinds of drugs per pot, it is recommended to use 2 kinds of protective agent + systemic absorbent.
Earhook Hearing Aid
Earhook Hearing Aid
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