The invention discloses a
medicine for preventing and treating
mikania micrantha, which comprises major ingredients of
atrazine, 2, 4-D butyl ester and widepeint. The
medicine comprises the following ingredients in percentage by weight: 5 to 70 percent of
atrazine, 10 to 75 percent of 2, 4-D butyl ester, 1 to 50 percent of widepeint and 1 to 10 percent of organic solvents, wherein the
atrazine adopts 40 percent of atrazine
suspending agents or 50 percent of atrazine
wettable powder, the 2, 4-D butyl ester adopts 72 percent of 2, 4-D butyl ester missible oil or 82 percent of 2, 4-D butyl ester missible oil, the widepeint adopts 6.9 percent of widepeint missible oil or 8.05 percent of widepeint missible oil, and the organic solvents adopt
terpene substances, preferably pentadiene or alpha-
terpinene. The
medicine composition aims at simultaneously generating the prevention and
treatment effect on the strong growth parts,
nutrition conveyance parts or
root system parts of the
mikania micrantha. The medicine of the invention has the advantages of safety, high efficiency and economy when being used for preventing and treating the
mikania micrantha, and in addition, the medicine effect can not be influenced by
drizzle or moderate rain with one hour after the medicine spraying.