NOVELTY - Plantation of potato includes cutting potatoes, adding wood ash, rosin powder and lard mixture to get saponification liquid, soaking saponification liquid and water, drying and planting; ditching; spraying saponification fluid and water to disinfect; and mixing oyster shell, kitchen garbage, oat hulls or bran, grinding, stirring, fermenting to get organic fertilizer, applying, mixing potassium feldspar, sesame, coconut shell, grapefruit skin and banana peel, grinding, adding organic fertilizer and water, mixing to get compound fertilizer and applying.    USE - Method for planting potato used for improving soil acidity (claimed).    ADVANTAGE - The method improves soil acidic environment and reduces land pollution.    DETAILED DESCRIPTION - Plantation of potato comprises cutting 10-15 per kilogram of potatoes into pieces before 20 days of germination, where each piece is left with one eye, adding wood ash, rosin powder and lard mixture in mass ratio of 1:1:1 for 2 hours to get saponification liquid, soaking saponification liquid and water in mass ratio of 1:200 for 1-2 hours, sterilizing, drying, seedbed germinating, watering 1-2 times a day and planting if buds grow to 1-0.5 cm; ditching using 50 cm big line and 40 cm small line; spraying saponification fluid and water in mass ratio of 1:10000 to disinfect; planting buds with 18 to 22 cm spacing; watering flowers once every 10 days and stopping watering 10 days before harvesting; and mixing 1.5 pts. wt. oyster shells, 1 pt. wt. kitchen garbage, 0.5 pt. wt. oat hulls or bran, grinding through 200 mesh sieve, stirring, fermenting to get organic fertilizer, applying 0.5-1 kg per square meter organic fertilizer two days after spraying disinfectant before planting, mixing 2 pts. wt. potassium feldspar, 6 pts. wt. sesame, 18 pts. wt. coconut shell, 8 pts. wt. grapefruit skin and 10 pts. wt. banana peel, grinding through 200-mesh sieve, adding 100 pts. wt. organic fertilizer and 200 pts. wt. water, mixing to get compound fertilizer and applying 0.3-0.5 kg per square meter compound.