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Closed weeds before seedling sowing
Clomazone can control a wide variety of annual grasses and broad-leaved weeds. It is mainly used in rapeseed transplanting fields, and soil sealing treatment is carried out before transplanting rapeseed. It is usually used together with acetochlor to improve the control of weeds that are difficult to prevent with acetochlor. In the case of better cover seed, low-dose clomazone is used before seedlings after sowing, which generally does not produce phytotoxicity. Live rape field and rapeseed bed seedlings were treated with isoamrylate acetochlor before seeding. The amount of pesticide should not be too large, so as to avoid whitening or even dead seedlings of rape seedlings.