2, heating method: suitable for powder pesticides. Take 5-10 grams of pesticide and heat it on a metal plate. If there is a lot of white smoke and there is a strong pungent odor, it means that the medicine is good. Otherwise, it shows that it has failed.
3ã€Floating method: Suitable for wettable powder pesticides. Take 200 grams of clear water and place it in a container. Take 1 gram of pesticide and gently spread it evenly on the surface of the water. Observe it carefully. If it is wet within 1 minute and it is soluble in water, it will be an intact pesticide. Otherwise, it will be a failure pesticide.
4. Suspension: Suitable for wettable powder pesticides. Take 30-50 grams of pesticide and place it in a glass container. Add a small amount of water to make a paste. Add 150-200 grams of water to mix. Stand for 10 minutes to observe. The non-failure pesticide has good solubility, and the powder of the liquid is good. Small, slow sedimentation and less precipitation.
5. Dissolution method: Suitable for suspension pesticides. The precipitated pesticide was put in a bottle of warm water (temperature 50-60°C). After one hour observation, if the precipitate dissolved slowly, it means that the agent has not failed, otherwise it has become invalid.
With the development of large-scale and intensive aquaculture, the scale of aquaculture is amazing, and the economic benefits in the absence of infectious diseases have indeed brought considerable economic benefits to the aquaculture industry. At the same time, it has made a significant contribution to promoting economic construction and improving human living standards. However, with the development of aquaculture today, there are many problems that have plagued the aquaculture industry, That is, livestock and livestock have been the timing of the outbreak of infectious diseases, which has brought huge economic losses to the entire breeding industry, so we have to rely on a large number of animal drugs, a large number of antibiotic drugs to fight against the outbreak, resulting in serious food pollution, such as: the residues of drugs and antibiotics in meat and eggs seriously exceed the standard, Excessive residues of a large number of drugs after use will directly threaten human health. However, this will bring disastrous consequences to the entire breeding industry, that is, human beings are more and more afraid to eat meat and eggs. If we continue not to start from the source of breeding pollution, then the consequences will be unimaginable.
Because the breeding environment can not be fundamentally improved from the source, the use of a large number of drugs and antibiotics can not be avoided. In fact, it is completely possible to realize ecological breeding and green breeding from the perspective of environmental cleaning and daily disinfection, and farmers can also save a large amount of drug costs.
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