When is the soil herbicide sprayed? There are many factors affecting the herbicide weeding effect of the soil, such as soil type, flat quality, poor mechanical properties, and no soil after application, which will affect the weeding effect to some extent. When spraying herbicides, it is necessary to choose sunny and windless weather for application, because spraying herbicides at other times will cause the wind speed to be too high due to the application of the herbicide, which will affect the herbicidal effect, and the specific small series will be It is explained in detail below.
First, the soil type
Because of the different soil textures, the amount of pesticide used is slightly different when using herbicides. In general, sandy land and soil fertility plots should be applied according to the lower limit of the recommended dosage; clay soil and fertile soil should be used according to the recommended high dose; sandy soil and other general soil textures should be based on In the case of weed bases over the years, adjust the dosage as appropriate.
Second, the quality of the ground
Soil-sealed herbicides mainly kill the unearthed weeds through the drug film layer, and the quality of the drug film layer is closely related to the quality of the flat land. The land with good quality is flat, the soil is broken, fine, the residual film is less, the effect of the drug is good, the weed control is better; the land with poor quality of flat land has more large soil blocks, and the drug film layer is easy to shift. Affect the effect of the drug.
Third, the liquid is configured with water
The quality of the water used to dispose of the liquid will affect the efficacy of the herbicide, so it is best to use clean water.
Fourth, the application of technology
The second dilution method should be used to ensure uniform application.
5. Poor performance of medical equipment or non-standard work
For example, the nozzle flow rate of each nozzle is inconsistent, the spray is uneven, the nozzle is dripping, etc., which will affect the weeding effect.
Sixth, do not mix soil after application
Soil 3-5cm tillage layer is too dry, which will affect the efficacy of herbicides. Generally, shallow soil should be applied after application, and the soil depth is about 3-5cm.
7. The process of strong rainfall within 5-10 days after application will affect the weeding effect.
8. When planting, the scraper of the planter scrape the soil thicker, causing the film layer to be destroyed, which will affect the weeding effect.
9. Agricultural operations such as alkali-breaking shells, replanting and re-casting will destroy the surface layer of herbicides and affect the weeding effect.
10. The temperature during the emergence period is low, which makes the herbicide activity lower, resulting in poor weeding effect.
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