1, selection of excellent varieties: lines with excellent characters such as line 36 and line 20 should be selected.

2. Stacking fermentation: corncob, dry cow dung, urea, calcium superphosphate, cooked gypsum powder and dry lime powder are mixed for stacking fermentation.

3. Inoculation: Inoculate mushroom strains on the bed surface, and cover with soil to keep moisture.

4. Mushroom management: the soil water content is stable at 16%- 18%.