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If the phytotoxicity of trifluralin occurs in the cotton field, watering measures should be taken immediately to dilute the drug concentration in the plant, and at the same time, the irrigation solution can absorb 4000 times of liquid, which can solve the phytotoxicity. Cotton is tainted by 2,4-butyl butyl ester, which is generally the result of drift. The sprayer is not completely cleaned, especially the residue of the spray bar, which is the cause of frequent phytotoxicity. After the phytotoxicity, spray cytokinin 500-600 times solution + love more than 4000 times solution, use 2 times, interval 5-7 days.
The common phytotoxicity of cotton is that the leaves are chicken-clawed by 2,4-butyl butyl ketone, and the leaves become smaller and narrower. In recent years, herbicide phytotoxicity of film cotton has been more common, which is characterized by shortening of internodes, less secondary roots, enlargement of main rhizomes, and severe breakage from above the ground. According to the investigation, the use of herbicides - improperly Caused. Mainly at present, when the land preparation is large, the area of ​​rotary tillage is large, the depth of cultivation is small, the land is uneven, and the mixed soil is uneven. Fluroxyline sprayed on the ground is exposed to the surface, and volatilizes to the inner wall of the film, especially when the temperature is higher than normal. It is easier to form medicine drops or drug mists. When cotton seedlings are unearthed, they are damaged. The base of the heavy stems forms a tumor. The bumps are broken, the main roots are deformed, the lateral roots are few or no hair, the light plants are short, and the leaves become darker and smaller. Stiff or seedlings. There is also no soil mixing as required, or less water, and no different measurement of different soil quality, such as sticky soil and high organic matter (more than 2%) with 48% emulsifiable concentrate 125-150 ml, light loam and sand If the organic matter of the soil is low, the use of 48% emulsifiable concentrate is 100-125 ml, and the correct dosage is the lower limit of the film cotton.
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