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近几年来,全国各地不少农户利用鱼池、堰塘或稻田养鱼。而在养鱼生产实践中,不少养(?)者曾经饱尝过“苦头”,当鱼一时发生病害时有的使用药物不当,不是鱼被“(?)死”(用药量过大)就是鱼被病死(用药量过小),造成人力的经济损失。为此,用药物防治鱼病时必须注意以下10点:一、两种药物混合使用时,应先分别溶化后混合。硫酸铜、酸酸亚铁、高锰酸钾等都应在木桶或木盆中用50℃左右的清洁井水溶化;漂白粉、敌百虫等粉剂药物,应先用少量水调成浆糊状,再加水稀释,以免结声被鱼误食。要使用漂白粉时,要测定漂白粉含氯量,不使用受潮漂白粉。在使用敌百虫时,要采用喷雾器,使用前后清洗干净。变质受潮的药物不可施用,各种药物均应现配现用。二、施用药物的时间,应安排在晴天的凌晨4时左右,不可在中午阳光直射时施用,以免降低药效。
In recent years, many farmers throughout the country have used fish ponds, weirs or rice fields for fish farming. In the practice of fish farming, many of the adopters have experienced the “bitterness”. When the fish is temporarily ill, some drugs are improperly used, and the fish are not “(?) Dead” (the dosage is too large) Fish died of illness (dosage is too small), resulting in human economic losses. To this end, the use of drugs to prevent fish disease must pay attention to the following 10 points: First, the two drugs mixed use, should be dissolved after mixing. Copper sulfate, ferrous sulfate, potassium permanganate and so on should be in the barrel or tub with about 50 ℃ clean well water melted; bleach, trichlorfon and other powder drugs, should be adjusted with a small amount of water paste Shape, add water to dilute, so as not to end the fish was eating fish. To use bleach, determine the chlorine content of the bleach and do not use moisture bleach. When using trichlorfon, use a sprayer to clean it before and after use. Metamorphic damp drugs can not be used, all kinds of drugs should be allocated with the current use. Second, the time of drug administration, should be arranged around 4:00 in the sunny day, not at sunshine direct sunlight at the time of application, so as not to reduce the efficacy.