大豆播种一般行距较宽,而苗期作物覆盖面小,极有利于杂草的生长与危害。大豆田杂草的化学防治能收到事半功倍的效果。一、播种前用药。每亩用48％氟乐灵乳油100—150毫升,兑水25—35公斤均匀喷洒地面,要边喷药边混土,混土深度5厘米左右,混药后2—5天即可播种。也可每亩用88％灭草猛乳油150—200毫升,或 Soybean seeding generally wide spacing, and seedling crop coverage is small, very conducive to the growth of weeds and hazards. Chemical control of weeds in soybean fields can receive a multiplier effect. First, before sowing medication. Bleach with 48% of trifluralin EC 100-150 ml, water 25-35 kg spray evenly on the ground, side spray side of the soil, mixed soil depth of about 5 cm, 2-5 days after mixing can be sown. Can also be used with 88% of the grass per hectare Emulsion 150-200 ml, or