1. It is necessary to clarify the performance characteristics of pesticide varieties. Pesticides are agricultural poisons that have selectivity for different organisms. For example, pesticides can be divided into contact agents, stomach poisons, systemic agents and fumigants according to their mode of action. Acaricides can be divided into killing agents. In the state of insects, only killing, sputum, and only killing eggs and sputum or only killing eggs; fungicides are divided into protective agents, systemic therapeutic agents and protective therapeutic agents; herbicides are divided into stems and leaves Agent and soil treatment agent. The same insecticide, is not versatile for all kinds of pests, each agent has its own range of control, such as anti-Riwei is used to control aphids, but the activity of cotton aphid is very poor; tetrazine (Abo Luo) Controlling the fruit tree red spider, only the activity of the egg is high, and it is not effective for Cheng and Ruo. The efficacy of a drug is also staged. When a new drug is just put into use, it tends to work better. With the heavy use, the resistance of pests and other harmful organisms will gradually increase, and the control effect will decrease. In the treatment stage of controlling a certain pest, the first drug and the later drug have different pharmacodynamic effects. For example, for the cotton bollworm, in the hatchery period of the first generation of the cotton field, before the larva 3 years old, the drugs generally used for controlling the cotton bollworm are Good control, but when the larva reaches 4 to 5 years old, it is difficult to achieve satisfactory efficacy with any agent.
2. Read the instructions on the instructions and the bottle label carefully. Pesticide is a technical product of informed consumption and needs to be used in strict accordance with the instructions on the instructions or on the bottle label. In other words, people should first use the full performance of the performance characteristics of the selected pesticides. Blind use not only fails to achieve the purpose of effectively controlling pests and diseases, but also brings side effects such as phytotoxicity to plants, pollution to products and the environment.
3. The contents of the bottle label and the instructions should be clarified. Active ingredient content: marked by percentage, the same drug name, different content, different dosage. Control object, dosage and method of use: The target of the drug should be marked according to the scope registered in the pesticide testing department of the Ministry of Agriculture. The dosage and method of use should be specific. For example, the cotton used to control cotton bollworm on cotton can not be used to control cotton bollworm on vegetables and other crops; the method of use cannot be changed at will, and the use of pre-emergence herbicides in corn fields is often difficult due to insufficient water consumption. The film is formed on the surface to reduce the efficacy; the control of fruit trees is often caused by insufficient water consumption, which reduces the efficacy. Safety interval: the number of days from the last application to the harvest. If it is used on vegetables, it must wait until the specified number of days, and the pesticides in the product can be decomposed. Note: Mainly for the characteristics of the agent, to remind people of the problems that should be paid attention to during storage, transportation and use. At the same time, attention should also be paid to the proper handling of pesticide packaging.
4. Scientific use of pesticide additives. Pesticide preparations already contain certain surfactants, but due to different control objects, different stages of use, different processing quality, and different water quality, in order to improve the wet performance of the spray liquid and improve the efficacy, it is often necessary to add certain Application of additives.
5. Scientifically evaluate the effects of prevention and treatment. The efficacy of insecticides and acaricides can be divided into two types according to the time of performance, such as quick-acting and sustained-effect. Especially insect growth regulators, the efficacy of drugs is slow; the efficacy of fungicides can be divided according to the principle of prevention and treatment. Both systemic treatment and protection, the protective agent is for the purpose of prevention, the therapeutic agent can be targeted after the onset of the disease; the efficacy of the herbicide is divided into pre-emergence treatment and stem and leaf treatment according to the time of administration. To this end, in evaluating the efficacy of the drug, different evaluation indicators should be selected according to their respective characteristics.
A solvent dye is a dye soluble in organic solvents. It is usually used as a solution in an organic solvent. Solvent Dyes are used to color organic solvents, hydrocarbon fuels, waxes, lubricants, plastics, and other hydrocarbon-based non polar materials. Fuel dyes are one use of solvent dyes. Their molecules are typically non polar or little polar, and they do not undergo ionization. They are insoluble in water.
Names of solvent dyes are often generic, of the scheme [solvent ", eg. Solvent Red 197, solvent orange 107, Solvent Violet 13, solvent yellow 185, solvent blue 104, etc.
Red and yellow solvent dyes are often azo dyes, green and blue ones tend to be anthraquinone dyes.
Solvent Dyes
Solvent Dyes,Solvent Blue 97,Solvent Red 197,Solvent Violet 13
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