1, the application of plastic film: mulching the cultivated crops, inconvenience after weeding the film, must be applied 30-50 kg of herbicide diluent per acre after sowing. Herbicides are applied to the film, and the amount of the herbicide is generally 1/3 less than that of conventional drugs. 2. Soil treatment: Spray or pour the herbicide on the soil before planting after soil preparation, or before emergence after sowing, generally do not need to turn the soil layer after applying the herbicide. However, for herbicides that are easily volatile and have poor mobility and mobility, when the soil is dry, the soil layer should be ploughed 3-5 cm deep immediately after application, and when spraying, generally 30-50 kg per mu. Trifluralin, quinones, etc. are commonly used soil treatment agents. 3, stem and leaf treatment: During the growth of the crop should be used more adaptable herbicides, or in the crop against the herbicide resistant growth stage spray or directional spray, generally about 30 kg per mu of liquid medicine. 4. Rational mixing: Not all herbicides can be mixed. The herbicides that can be mixed must be different in the type of grass to be killed. At the same time, the pot life and the use method must be kissed. In addition, precipitation should not be used when several herbicides are mixed. The amount of each herbicide used after mixing should be 1/3-1/2 of the single amount.
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