NOVELTY - Inland salt alkali dropping liquid fertilizer comprises 20-40 pts. wt. microorganism fermentation extract of fulvic acid, 20-30 pts. wt. urea, 5-10 pts. wt. ammonium polyphosphate, 10-20 pts. wt. potassium dihydrogen phosphate, 2-5 pts. wt. inorganic auxiliary agent, 2-3 pts. wt. ferrous sulfate, 2-3 pts. wt. zinc sulfate, 2-3 pts. wt. manganese sulfate, and 0.5-1 pt. wt. 15-20% plant growth regulator ethanol solution.    USE - Inland salt alkali dropping liquid fertilizer.    ADVANTAGE - The fertilizer reduces soil pH, and increases soil nutrient biological effectiveness, nutrient balance and water efficiency.    DETAILED DESCRIPTION - Inland salt alkali dropping liquid fertilizer comprises 20-40 pts. wt. microorganism fermentation extract of fulvic acid, 20-30 pts. wt. urea, 5-10 pts. wt. ammonium polyphosphate, 10-20 pts. wt. potassium dihydrogen phosphate, 2-5 pts. wt. inorganic auxiliary agent, 2-3 pts. wt. ferrous sulfate, 2-3 pts. wt. zinc sulfate, 2-3 pts. wt. manganese sulfate, and 0.5-1 pt. wt. 15-20% plant growth regulator ethanol solution. The microorganism fermentation extract of fulvic acid is prepared by inoculating Aspergillus niger or green Trichoderma bacterial strain in weathered coal, fermenting, taking citric acid and furfural residue, and extracting. An INDEPENDENT CLAIM is included for the preparation of inland salt alkali dropping liquid fertilizer comprising taking good active Aspergillus niger or Penicillium bacterial strain, adding weathered coal, adding 35-40 wt.% inorganic salt nutrient liquid glucose, standing and culturing at 25-30 degrees C for 10-15 days, continuously supplementing water; taking fresh furfural residue, adding water to water content of 60-70 wt.%, soaking for 12-24 hours, extracting furfural residue to obtain extracting liquid; adding citric acid to furfural residue extraction liquid, mixing with humic acid and weathered coal microorganism fermentation liquid, reacting at 25-30 degrees C for 12-0 hours, intermittent stirring, standing and layering, collecting upper yellow liquid to obtain microorganism fermented extract; and adding urea, stirring, heating to 50-60 degrees C, adding ammonium polyphosphate, regulating pH to 2.5-3.0, adding potassium dihydrogen phosphate, dissolving, adding inorganic auxiliary agent, stirring, orderly adding ferrous sulfate, zinc sulfate and manganese sulfate, stirring, adding plant growth regulator ethanol, and stirring.