| abstract |
The invention discloses a compound fertilizer resistant to low temperature and segmental absorption and a preparation method thereof. Compound fertilizers include polar organic solvents, urease inhibitors, water, inorganic salt fertilizers, and urea. The preparation method is as follows: adding the urease inhibitor into the polar organic solvent and stirring uniformly to obtain a mixed liquid; adding water, inorganic salt fertilizer and urea to the prepared mixed liquid and stirring evenly. In the present invention, first adding water to the organic solvent can lower the freezing point, effectively prevent the sudden drop in temperature caused by heat absorption when adding urea, and cause problems such as uneven precipitation and mixing of fertilizers. It can conveniently and quickly prepare compound fertilizers, and dissolve inorganic salt fertilizers and urea components to the greatest extent. |