The invention discloses a high-yield cultivation method for potato high-
ridge close planting. The method includes the following steps that firstly, a sandy planting field is selected, deep
scarification and ridging are conducted, ditches are communicated with each other, and the furrow
ditch is deeper than other ditches; secondly, 500-750 kg of composted
chicken manure or 300-500 kg of organic composite
fertilizer with the composted
chicken manure as the
raw material, 75 kg of long-acting controlled-released composite
fertilizer, 40-45 kg of quick-acting composite
fertilizer, 2.5 kg of
magnesium sulfate and 1 kg of
zinc sulfate and agricultural
borax are applied to each mu of planting field, and soil covering is conducted after the fertilizers are applied to the ditches in furrows; thirdly, seed potatoes are purchased and diced, wherein each potato dice is 30-50 g heavy, and 1-2 holes are formed in each dice; fourthly, the seed potatoes are sown from the late October to late November at the temperature of 17-21 DEG C, and 4000-5000 plants are sown in each mu; fifthly, soil is watered and wetted 4-7 days after
sowing, the soil is irrigated with a proper amount of water according to actual conditions in the
seedling period, accumulated water is drained 20 days before harvesting, and the situations that rotten potatoes are caused due to accumulated water and ditches need to be drained when the amount rainwater is excessively large are prevented; sixthly, when stems and leaves of potatoes become yellow and after potato
skin is lignified, the potatoes can be harvested. The method increases the potato yield.