NOVELTY - Potato special liquid fertilizer comprises fresh chicken manure fermentation liquid, urea, potassium dihydrogen phosphate, potassium humate, ammonium molybdate, boric acid, ferrous sulfate, magnesium sulfate, zinc sulfate, composite acid, water-retaining agent, diammonium phosphate, potato extract, chitosan, alginic acid, soybean extract, expanding agent, water, and vegetable fermentation liquid.    USE - Potato special liquid fertilizer.    ADVANTAGE - The fertilizer is rich in nutrients and environment-friendly and has inexpensive organic substances as waste.    DETAILED DESCRIPTION - Potato special liquid fertilizer comprises 100 pts. wt. fresh chicken manure fermentation liquid, 8-10 pts. wt. urea, 1.5-2 pts. wt. potassium dihydrogen phosphate, 5-8 pts. wt. potassium humate, 0.01-0.03 pt. wt. ammonium molybdate, 2-5 pts. wt. boric acid, 3-7 pts. wt. ferrous sulfate, 3-6 pts. wt. magnesium sulfate, 2-5 pts. wt. zinc sulfate, 8-10 pts. wt. composite acid, 1-3 pts. wt. water-retaining agent, 5-10 pts. wt. diammonium phosphate, 20-35 pts. wt. potato extract, 15-20 pts. wt. chitosan, 5-10 pts. wt. alginic acid, 3-5 pts. wt. soybean extract, 0.2-0.5 pt. wt. expanding agent, 10-12 pts. wt. water, and 40-60 pts. wt. vegetable fermentation liquid. An INDEPENDENT CLAIM is included for preparation of fertilizer comprising adding fresh chicken manure fermentation liquid into fermentation tanks, adding microbial inoculum, heating to 35-40 degrees C for 6-7 days, and controlling pH at 7.2-8; diluting with 10 times sterile water, adding 3-5 wt.% sucrose and 2-3 wt.% urea, slowly stirring for 10-20 minutes, fermenting at 30-35 degrees C for 6-8 days, and controlling pH at 6-7; adding into mixing tank, stirring with composite acid, putting back to fermentation tank, deodorizing, and fermenting for 1-2 days; adding with urea, potassium dihydrogen phosphate, potassium humate, ammonium molybdate, boric acid, ferrous sulfate, magnesium sulfate, zinc sulfate, composite acid, water-retaining agent, diammonium phosphate, potato extract, chitosan, alginic acid, soybean extract, expanding agent and vegetable fermentation liquid, heating to 30-35 degrees C, fermenting for 1-3 days, and controlling pH at 6-7; adding with 0.01-0.02 wt.% carbendazim and stirring for 20-24 hours; and ultrasonically dispersing for 10-15 minutes, separating by filtration to remove solid impurities, and aseptic filling.