The invention discloses a nano water suspending agent of oxine-
copper, which comprises the following components: oxine-
copper, a dispersing agent, an auxiliary dispersing agent 1, a
wetting agent, a
preservative, a defoaming agent, an antifreezing agent, a
thickening agent and the balance of water. The
particle size distribution of the nano
pesticide water suspension agent prepared by the invention is between 200 and 900 nm, so that the active ingredients of the raw
medicine can permeate and penetrate through tissue membranes of
plant tissues or thalli, and the
bactericidal effect of the active ingredients of the raw
medicine on a target is promoted; through reasonable combination and balance of the dispersing agent, the auxiliary dispersing agent and the
wetting agent, excellent
dispersity is formed, aggregation and particle
size increase of particles in the nano suspending agent can be effectively avoided, the quality stability is good, meanwhile, the nano suspending agent has excellent
wetting performance, the
adhesive force on a target is increased, the deposition amount on the target is increased, and therefore the
pesticide effect and the
utilization rate of
pesticide active ingredients are improved; the use amount and the use frequency of the pesticide are reduced, and pesticide residues and
pollution to the environment are reduced.