The invention relates to a liquid anti-
caking agent for a compound
fertilizer, which consists of 1 to 50 weight percent of aqueous
polymer, 1 to 50 weight percent of surfactant, and the balance of water. The surfactant is one or combination of any of an anionic surfactant, a non-ionic surfactant, a cationic surfactant and an amphoteric surfactant. Optionally, one ore more additives which are selected from a defoaming agent, a
preservative, a dye and a
pigment can also be added into the liquid anti-
caking agent for the compound
fertilizer; and the consumption of the defoaming agent is 0 to 5 weight percent, the consumption of the
preservative is 0 to 5 weight percent and the total consumption of the dye and the
pigment is 0 to 50 weight percent. The liquid anti-
caking agent for the compound
fertilizer can effectively solve the caking problem of a compound fertilizer product, particularly the caking problem of a compound fertilizer with high
nutrient content such as a
high nitrogen compound fertilizer which is difficult to solve by present enterprises producing compound fertilizers, and ensures that the compound fertilizer product has the characteristics of green fertilizers.