NOVELTY - Production of special fertilizer includes preparing main material comprising providing cow dung, chicken manure, corn stalk powder, corn meal, and organic material decomposing agent, mixing, adding into water, controlling water content, piling and preserving humidity, fermenting, drying, crushing, adding into humic acid powder and bentonite powder, and continuously drying; preparing auxiliary material by mixing corn stalk section, corn stalk powder, broomcorn straw powder, calcium superphosphate, and potassium sulfate; and mixing the main material with the auxiliary material.    USE - Production of special fertilizer for Isatis indigotica continuous cropping (claimed).    ADVANTAGE - The special fertilizer can guarantee the nutrition needed for the growth of I. indigotica according to the growth characteristic of I. indigotica. It contains organic material and beneficial bacteria, improving the rhizosphere environment, degrading toxic substance, and reducing the occurrence of diseases. Thus, continuous high and stable yield of I. indigotica is realized.    DETAILED DESCRIPTION - Production of special fertilizer comprises:    (A) preparing main material by providing (pts.wt.) cow dung (350-500) with water content of 11-15%, chicken manure (80-150) with water content of 11-15%, corn stalk powder (120-200) with water content of 10-17%, corn meal (15-30) with water content of 10-15%, and organic material decomposing agent (1-5); mixing and stirring; adding into water; controlling water content at 40-50%; stirring uniformly; piling and preserving humidity; controlling environmental temperature at 18-25 degrees C and humidity at 50-65%; fermenting for 7-13 days; drying the fermented mixture at 35-45 degrees C while keeping out of the sun to reduce water content to 14-17%; crushing into 60-100 mesh; adding into humic acid powder (8-12 wt.%) and bentonite powder (5-10 wt.%); and continuously drying until water content reaches 11-14% to obtain the main material;    (B) preparing auxiliary material comprising mixing corn stalk section with water content of 10-17% and length of 3-5 cm, corn stalk powder with water content of 10-17%, broomcorn straw powder with water content of 10-17%, calcium superphosphate, and potassium sulfate at 220-310:200-280:200-300:3-7:1 weight ratio; and    (C) preparing special fertilizer by mixing the main material with the auxiliary material at 1:1-4 weight ratio to obtain special fertilizer.