The invention relates to the field of liquid
fertilizer, particularly relates to high-concentration suspended liquid
fertilizer, and further relates to the solving of the defects that
sedimentation is generated due to the fact that a
crystal is separated out and grows to be a
large particle in a high-concentration suspended liquid
fertilizer storage process. The high-concentration suspended liquid fertilizer is characterized in that an insoluble substance in fertilizer is suspended through using a suspended auxiliary; specific nano-pore colloidal particles are added as a
crystal growth inhibitor; the colloidal particles have excellent
dispersity in the suspended fertilizer; nano pores of the colloidal particles have big enough surface areas and in-pore chelating agents to adsorb and collect crystalline gains; the aggregation of newly separated out crystalline grains and the growth of
crystal grains in the storage process of liquid fertilizer are effectively limited through a space effect of the dispersion of the colloidal particles; thus, the high-concentration suspended liquid fertilizer is stably suspended for a long time. The
crystal growth inhibitor has fixation effects on amidonitrogen,
ammonium nitrogen and nitric
nitrogen; after the high-concentration suspended liquid fertilizer is used for water-fertilizer integrated fertilizer application, the loss and the volatilization of
nitrogen fertilizer are reduced; thus, the defect that the
utilization rate of a nitrogen element is low for a long time in water-fertilizer integration is effectively solved.