compound against plant virus

The invention relates to a compound which can resist plant viruses. The compound has the constituents and the weight percentages that bitter, berberine, and brass are 20-40 percent; bacteria reduqing is 1-15 percent; assistant is 5-30 percent; and filling agent is 15-74 percent. The invention is mainly used to prevent plant virus diseases such as baccy virus disease, capsicum virus disease, tomato virus disease, and the like, and the effect is obvious.