1. After covering the mulch with potato mulching, it can not only keep the soil ridge surface moist, save water, but also increase soil temperature and promote potato growth and development. According to the experiment, the potato tubers cultivated with plastic film mulching are swollen early and grow fast, which not only shortens the growth period, but also increases the market rate of potato chips. Specific practice: adopt wide-ridge double-row cultivation, ridge width 1.5 meters, double-row wrong nest sowing, cover the mulch film in time after sowing, rupture the membrane after emergence, prevent the temperature from being too high and burn the seedling.