Weeds in corn fields mainly include crabgrass, beef tendons, dogtails, li, ramie, bowls of flowers, purslane, etc. In addition to competing with crops for water, they can also be used as a source of virus to spread viruses. . Choose high-quality herbicides, master the best medication period, and strictly follow the dosage.
(1) 40% isopropyl oxaloquinone? èŽ suspension emulsion 200ml, 50kg water, sprayed before the corn is sown.
(2) After the emergence of the seedlings, use 23% of the nicotinamide, the toluene oil suspension agent, 100 ml, or 40 g / liter of the nicosulfuron oil suspension, 100 ml, and add 100 ml of the torazine, spray at the 3-5 leaf stage of the corn. Shi. It should be noted that when spraying post-emergence herbicides containing nicosulfuron, it is strictly forbidden to add organophosphorus pesticides mixed spray, and organophosphorus pesticides cannot be used one week before and after spraying to avoid phytotoxicity.
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