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When the land encounters low temperature, the seeds grow slowly and cannot pass through the herbicide layer at the expected rate, which increases the contact time between the seeds and the herbicide, resulting in the size of the seedlings, the dead leaves of the powdered seeds, and the wrinkles. Some unsafe seed treatments inhibit the growth of seedlings, thus prolonging the time it takes to pass through the herbicide layer and cause harm. For example, low temperatures and rainy weather, such as tetrazole, can inhibit seed germination and growth, resulting in prolonged contact time between the growing site and the herbicide area, resulting in herbicide hazards.
The initial herbicide damage is localized or locally on the ground, but can be recovered by applying fast-acting fertilizers to supplement nutrients such as nitrogen. Herbicides are mostly acidic substances, which can be sprinkled with lime, grass ash, etc. to reduce harm. The mixture of organophosphorus pesticides and herbicides, the residual components in organophosphorus pesticides will affect the growth of plants and crops, resulting in necrosis or death of plant growth points or leaf sheaths, and seriously affect crop yield and quality.
Organophosphorus pesticides are highly toxic and have the greatest impact on humans and the atmosphere.
Therefore, we should reduce the use of organophosphorus pesticides and herbicides, and before use, organic acid treatment should be carried out to eliminate pesticide residues. Before the use of organophosphorus pesticides, organic liquid treatment can be carried out with a solution, such as soaking or spraying after soaking. Before the organophosphorus pesticide is used, immerse it in the solution around the roots of the crop for 20 minutes and 20 minutes.
When soaking, the liquid can be diluted to the desired concentration. Generally, after soaking for 2 hours, the liquid can reach the minimum amount of organophosphorus pesticide residues.
When the liquid reaches the required concentration, it can be sprayed. When spraying, the liquid medicine should be 1-3 cm away from the crop, the nozzle should be 30-50 cm away from the crop, the nozzle diameter should be larger, the spray amount should be sufficient, and the spraying time should be short. When the liquid reaches the required concentration, it can be prescribed for the case, or foliar spraying, the spray head should be more than 30 cm away from the crop, and the prevention and control of pesticide damage can be based on the actual situation, chemical methods, physical methods and biological methods can be used.
For example, it can be directly mixed in plant ash or lime, and then mixed with organic liquid, etc., to reduce the occurrence of pesticide damage.
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Because the herbicide is sprayed too much, because the herbicide is used improperly, because the amount of herbicide is used too much, but also because the herbicide is not reasonably matched, and because the herbicide is not used to pay attention to the proportion of regulation.
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The main reason is that it is not diluted, and secondly, it is also because it is raised too high when it is used, so it will cause great damage, and I have not done a good job of protection, I did not wear a mask, and it was windy weather when spraying pesticides.
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It may be that the method of medication is wrong, or the temperature is not paid attention to, or it may be caused by wind speed, or because of the environment, or it may be rainy, or the temperature is too high, which will cause drug damage.
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Dizziness, nausea, muscle tremors, loss of orientation, loss of appetite, diarrhea, etc., may occur, these conditions, poisoning is severe, be sure to go for a checkup.
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It causes problems with the growth of the plant, it leads to the situation of falling flowers and fruits, and the leaves and petals of the plant will curl and the leaves will become thicker.
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The root system of the plant is underdeveloped, and there will be symptoms such as yellowing of leaves, distortion of leaves, uneven seedling planting, and then many bitter seedlings.
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It may be that the proportion is wrong, the water is added too much, so the effect of the herbicide is affected, not all of it is played, and there is also the weather, if it rains just after the pesticide, it will also affect the effect of the herbicide, which will make the herbicide ineffective, so that there is no way to clean the grass.
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It is very likely that the effect of the herbicide is not particularly good, it may also be because the herbicide has expired, it may be caused by the inappropriate ratio of herbicide, it may also be because the plant is affected by diseases and insects, or it may be because there are more weeds, or there is a problem with the method used.
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Rainy weather, hail weather, the way the herbicide is sprayed, the time the herbicide is sprayed, the way the herbicide is used, these reasons will affect the efficacy of the herbicide.
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The reasons include the temperature at that time, the humidity of the air, the moisture of the soil, the precipitation, and the light.
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Herbicide damage refers to a series of abnormal phenomena caused by the inappropriate application of herbicides and the stunting of the normal physiological function or growth and development of crops. Acute drug damage has obvious symptoms in a few hours to 3 4 days after spraying, and it develops rapidly, such as burns, perforations, wilting, falling leaves, falling flowers, falling fruits, etc. Chronic pesticide damage caused obvious reactions after spraying for a long time, showing poor growth, leaf deformity, greening and yellowing, delayed ripening, poor flavor, and dissatisfied grains.
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