NOVELTY - Liquid fertilizer comprises rice bran (20-25 pts. wt.), coffee beans (8-10 pts. wt.), modified starch solution (20-24 pts. wt.), peanut cake powder (44-46 pts. wt.), cotton straw powder (26-30 pts. wt.), composite microbial inoculum (3-4 pts. wt.), Linum usitatissimum fiber (16-18 pts. wt.), and water. Composite microbial inoculum comprises silicate fungus, Bacillus subtilis and photosynthetic bacteria in ratio of 2:1:1. Modified starch solution comprises potato (45-55 pts. wt.), calcium acetate (2-4 pts. wt.), and potassium permanganate solution (2-3 pts. wt.).    USE - Liquid fertilizer used for increasing corn yield (claimed).    ADVANTAGE - The liquid fertilizer is degradable, and ensures supply of nitrogen, phosphorus and other nutrients to corn.    DETAILED DESCRIPTION - Liquid fertilizer comprises rice bran (20-25 pts. wt.), coffee beans (8-10 pts. wt.), modified starch solution (20-24 pts. wt.), peanut cake powder (44-46 pts. wt.), cotton straw powder (26-30 pts. wt.), composite microbial inoculum (3-4 pts. wt.), Linum usitatissimum fiber (16-18 pts. wt.), and water. Composite microbial inoculum comprises silicate fungus, Bacillus subtilis and photosynthetic bacteria in ratio of 2:1:1. Modified starch solution comprises potato (45-55 pts. wt.), calcium acetate (2-4 pts. wt.), potassium permanganate solution (2-3 pts. wt.), acrylic acid (15-20 pts. wt.), sodium hydroxide (3-4 pts. wt.), N,N-methylenebisacrylamide (0.1-0.3 pts. wt.), ferrous sulfate (8-10 pts. wt.), zinc sulfate (6-8 pts. wt.), and manganese sulfate (7-9 pts. wt.). Modified starch solution is prepared by boiling potato with water (2 times the quantity of potato) at 70-90 degrees C for 30-60 minutes. Obtained product is treated with potassium permanganate solution for 50-70 minutes to facilitate oxidation. Obtained mixture is treated with acrylic acid, sodium hydroxide solution, and N,N-methylenebisacrylamide for 20-30 minutes to facilitate crosslinking. Calcium acetate is added to obtained mixture under stirring condition. Ferrous sulfate is added to stirred mixture at 15-60 degrees C. Obtained mixture is treated with zinc sulfate for 15 minutes, and manganese sulfate for 20-30 minutes at 60-80 degrees C. An INDEPENDENT CLAIM is included for a method for preparing liquid fertilizer, which involves:    (A) fermenting peanut cake powder, rice bran, cotton straw powder and Linum usitatissimum fiber in fermentation pool for 3-4 weeks to obtain fermented product having water content of 50-60%;    (B) drying coffee beans at 60-70 degrees C;    (C) pulverizing coffee beans to obtain fine powder;    (D) heating obtained coffee powder with water at 85-95 degrees C for 5-10 minutes under stirring condition;    (E) cooling obtained product to 30 degrees C;    (F) adding composite microbial inoculum to obtained mixture;    (G) treating obtained coffee mixture at 35-45 degrees C;    (H) pulverizing obtained coffee mixture to obtain coffee powder;    (I) drying obtained powder at 100-120 degrees C for 20-30 minutes;    (J) mixing coffee powder, fermented product and modified starch solution; and    (K) drying obtained mixture at 60-70 degrees C to obtain the final product.