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The herbicides played in wheat fields are systemic conductive herbicides, the effect of this kind of herbicides can only be fully exerted after a few days or even a few days, only two days later, the time is a little short, the control effect of grass will be affected, and the herbicide will flow to the low-lying land with the rainwater, if it accumulates to a certain amount, it may also cause damage to the crops in the low-lying land. It is best to wait for the weather to clear and let the people in the low-lying areas use Naian weeding safety additives to prevent damage and losses.
Pay attention to the time of spraying: do not spray in the morning when there is dew, because the herbicide may roll down with the dew or evaporate with the dew when there is dew on the crops, which will reduce the effectiveness and will not serve the purpose of weedicide. It should also not be sprayed at noon on a sunny day, because the temperature is high at noon on a sunny day, and the crops close the stomata in order to avoid the rapid evaporation of water, so that the effective part of the herbicide is difficult to enter the crop and cannot have the effect of weeding.
The best time to spray is before 10 a.m. and after 4 p.m. on sunny days, and can be sprayed all day on cloudy days. In addition, if it rains within 6 to 10 hours after spraying, it should be sprayed again after the weather is clear.
It should also be noted that some herbicides work on weeds and crops at the same time, and when using these herbicides, the liquid should be sprayed directly on the weeds to avoid spraying the liquid on the green leaves of crops and causing crop damage.
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What do you mean? Rice Qingqing is a herbicide, note that the ingredient is oxazolamid + cyanofluoxate. It mainly controls grasses in paddy fields, such as goldenrod, horsetail and barnyard grass.
Hope mine is helpful to you.
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Improper compatibility may cause precipitation, agglomeration, discoloration, and even failure or toxicity, and this unreasonable compatibility drug is called compatibility contraindications. The common types of physical compatibility contraindications: the physical properties of the drug ingredients in the prescription change (separation, precipitation, deliquescent) phenomenon; Contraindications for chemical compatibility:
adverse chemical reactions between drug components in the prescription (precipitation, discoloration, gassing, combustion, etc.); Contraindications for curative compatibility: The effects of certain drugs in the prescription are mutually inconsistent and affect the efficacy of the prescription (cholinergic drugs and anticholinergic drugs, sulfonamides and procaine, etc.).
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When some drugs are used together, there may be changes in reduced efficacy or even increased toxicity due to improper combination. This kind of compatibility change is a compatibility contraindication and must be avoided as much as possible. The compatibility contraindications of drugs can be divided into physical (physical changes such as deliquescent, liquefaction or precipitation crystallization), chemical (chemical changes such as precipitation, gas production, discoloration, combustion and even hydrolysis that are not visible to the naked eye) and pharmacological (pharmacological effects cancel each other out or increase toxicity).
These phenomena should be absolutely avoided when prescribing clinically, especially when multiple injections are used in combination. For example, when penicillin for injection is diluted with sodium bicarbonate injection, turbid precipitation occurs.
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Drug compatibility is the mixing of two or more drugs together in the process of pharmaceutical manufacturing or clinical use. In the process of compatibility, if there is a change that is not conducive to the quality or the best of the best, it is called a contraindication to compatibility. Proper drug compatibility can improve the performance of the drug and enhance the efficacy, such as choosing appropriate additives to make the drug stable, and adding vitamin C to the oral administration of ferrous salt can increase absorption.
However, compatibility contraindications also often occur. Compatibility contraindications are divided into three categories: physical, chemical and pharmacological. Physical compatibility contraindication refers to the change of physical properties during drug compatibility, such as the formation of eutectic mixtures during the development of some drugs, which destroys the appearance and causes difficulties in use.
The chemical compatibility contraindication refers to the chemical change in the process of compatibility, precipitation, redox and discoloration reactions, which make the drug decomposition ineffective. Pharmacological compatibility contraindications refer to the changes in pharmacodynamics and increased toxicity that occur after compatibility. Drug compatibility contraindications refer to:
When the application of one drug is not effective, it is necessary to choose other drugs for reasonable compatibility. However, not all drug compatibility is reasonable, and some drug compatibility weakens the best effect of the drug, resulting in the best failure; The compatibility of some drugs enhances the toxicity and causes serious adverse reactions; There are also some drugs that make the effect of ** excessively enhanced, beyond the ability of the body to tolerate, and can also cause adverse reactions, and even harm patients. These compatibility are contraindications.
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The use of two or more drugs in the same animal at the same time or in a short period of time is called a combination drug or a combination of drugs. The aim is to enhance efficacy and reduce adverse effects for different symptoms or comorbidities. After the compatibility of drugs, the drug effect is enhanced, and the synergistic effect is enhanced; After the compatibility of drugs, the effect of the drug is weakened.
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In traditional Chinese medicine, more than two drugs are selectively combined according to the needs of the condition and the performance of the drug. There will be a certain interaction relationship between drug compatibility. It's that you have several medicines in your drip.
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If there will be a certain interaction between drug compatibility, which affects the efficacy or drug interaction, it is not suitable to be used together.
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Compatibility is combination, that is, more than one drug is put together to treat the disease, the purpose of which is to improve the efficacy and reduce the efficacy.
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Compatibility, compatibility, compatibility is a medical term! To put it bluntly, it is collocation; The meaning of cooperation! What a stupid crab farmer!!
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1 All hello, rice green can prevent rice leaf disease, with pentaflusulam, it can enhance its bacteriostatic power, can be sprayed.
The use of two or more drugs in the same animal at the same time or in a short period of time is called a combination drug or a combination of drugs. The aim is to enhance efficacy and reduce adverse effects for different symptoms or comorbidities. After the compatibility of drugs, the drug effect is enhanced, and the synergistic effect is enhanced; After the compatibility of drugs, the effect of the drug is weakened.
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