使用土农药烟草水防治柑桔红蜘蛛,杀虫率可高达94.8％以上。烟草水的配制十分简单,只要将烟叶(或烟茎、烟骨)500克加5公斤开水泡在盆或桶里加盖浸一昼夜后,用手揉搓烟叶,到没有浓烟汁揉出,然后捞出烟叶,用纱布过滤,在过滤液中加入15公斤清水混和即成。用制备的烟草水喷树冠,隔5天再喷1次,连续2次便基本控制。 Use pesticide tobacco water to control citrus red spider insecticide rate can be as high as 94.8%. The preparation of tobacco water is very simple, as long as the tobacco (or tobacco stems, tobacco) 500 grams plus 5 kg of open water in a pot or bucket cap dipped in a day and night, hand rubbing the leaves until no thick juice rub out, and then Remove the leaves, filter with gauze, in the filtrate by adding 15 kg of water Serve. With the preparation of tobacco canopy spray crown spray again every 5 days 1, 2 times the basic control.