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冬白菜和青花菜叶面喷洒奥普尔可以增强冬白菜的抗病性和青花菜提早上市，使蔬菜产量大幅度提高。
Winter cabbage and broccoli foliar spray Opal can enhance the resistance of winter cabbage and early listing of broccoli, so that a substantial increase in vegetable yield.