The invention discloses a
niclosamide controlled-release dispersing agent for killing
schistosoma japonicum cercaria and a preparation method thereof. The
niclosamide controlled-release dispersing agent for killing the
schistosoma japonicum cercaria is characterized in that the compositions of the
niclosamide controlled-release dispersing agent are niclosamide,
paradichlorobenzene, floating carriers and a dispersing agent and the main compositions of the niclosamide controlled-release dispersing agent are the niclosamide and the
paradichlorobenzene, wherein the weight ratio of the niclosamide to the
paradichlorobenzene is between 10 and 30 to between 90 and 70. The niclosamide controlled-release dispersing agent and the preparation method have scientific and reasonable formula and ratio, advanced and simple technique and good effect of killing the
schistosoma japonicum cercaria. The controlled-release dispersing agent for killing the
schistosoma japonicum cercaria, which is prepared by
processing the niclosamide, the paradichlorobenzene,
corncob particles and so on as materials, is applied to a
pathogen generation
water area, releases the niclosamide at a fixed quantity in virtue of sublimation of the paradichlorobenzene, freely diffuses in virtue of the molecular tension and the function of the dispersing agent, reaches the predicted concentration in a
water body, has
long lasting period, effectively kills the
schistosoma japonicum cercaria, and prevents the
schistosoma japonicum cercaria from infecting human beings and
livestock; and the death rate of the schistosoma japonicum cercaria reaches 100 percent.