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(B) spraying time: spray time before the germination peak weeds will be sprayed on the surface of the earth, so that the herbicide in the effective period to fully play a role.
(3) Operation requirements: The unit's forward speed is 4-6.5 km/h, the pressure is 0.3-0.6 MPa, and the agent dilution rate is 50-100 times. The crew must walk in strict accordance with the pre-determined route, and should not stop or shift at will. The opening and closing of the sprayer should be accurate, and should not be half-opened or semi-closed. Avoid adding water in the middle of the plot to add drugs. The joints should be quasi-adjusted, not sprayed or sprayed, and sprayed evenly. More than three wind can not work.
(4) Matters needing attention: Weighing heavy acid, heavy alkali, land with severe water and soil loss and land with dry soil should not use herbicides for weed control; Soil organic matter content greater than 3% and heavy clay soil, the amount of pesticide application should be large; soil moisture is good, sunshine is sufficient, It is conducive to the exertion of medicinal effects and has a good weeding effect; when atrazine exceeds 0.25 kg per acre, it will be prone to phytotoxicity to the buckwheat and legume crops of that year, and if it exceeds 0.4 kg, it will produce medicine for wheat and beans in the next year. harm.
Mechanical weeding
(1) Herbicide preparation: Atrazine 0.15-0.3 kg Gala 0.25-0.3 kg; Atrazine 0.15-0.5 kg Gardur 0.1-0.15 kg; Atrazine 0.15-0.3 kg plus B-Grass Amines 0.13-0.2 kg (Mu Shi).
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Millet high yield cultivation techniques