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一,要弄清药物的性质。药物的种类很多,不同的药物其防治对象不同。有些药物能够杀死甲壳动物但不能消灭病菌,如六六六。同一种药物则可能有粉剂、可湿性粉剂、乳剂、颗粒剂等许多种剂型。同一种药物的不同剂型,使用的方法也不同,防病治病的效果也有显著差异。故在施药前,首先要了解药物的种类、性能、剂型以及对病、虫、鱼体的作用,否则不能做到合理有效地选用药物和充分发挥药物的防治效果。治疗赤皮病、
First, we must understand the nature of the drug. Many types of drugs, different drugs, their prevention and treatment of different objects. Some drugs can kill crustaceans but can not eliminate germs, such as 666. The same drug may have a powder, wettable powder, emulsion, granules and many other dosage forms. The same drug of different dosage forms, methods used are also different, the effect of disease prevention and treatment are also significantly different. Therefore, before spraying, we must first understand the type of drug, performance, dosage form and the role of disease, insects, fish, or can not be rational and effective use of drugs and give full play to the drug control effect. Red-skin disease treatment,