Cultivation techniques of Potato covered with plastic Film

First, the sowing date. Broadcast early at the right time. Seeds are usually sown in plain areas from late January to early February. The seeds are sown on the ground after thawing in the mountain area, usually from mid-late March to early April.

Second, sowing method direct ridging after ridging should take advantage of soil moisture to sow seeds. If the soil is dry and the soil moisture is insufficient before sowing, the soil moisture should be irrigated in spring first, and there should be no lack of soil moisture to sow. Plant two rows in each ridge and plant in the ridge. It is strictly forbidden to plant on the edge of the ridge or even on the ridge slope, sowing in the shape of "grade" when sowing. Ridging, sowing and plastic film mulching should be completed at one time, and be careful not to sow too deep to prevent seedling emergence.

Third, planting density. It should be planted in close planting reasonably. The distance between upward ridges (30cm~40cm), plant spacing (25cm~30cm) and sowing depth (5cm~8cm). Generally, the amount of seed per 667m2 is 100kg~150kg. After sowing, cover the soil to flatten the ridge surface and prepare for film mulching.

Fourth, cover the film correctly. Choose mulch with thick 0.005mm~0.006mm and wide 80cm~100cm. Plastic film 3kg~4kg was used per 667m2. When covering the plastic film, open a ditch on both sides of the ridge, spread the film along the vertical and horizontal direction, make the film close to the ridge surface, at the same time, compact both sides with fine soil, press 5cm-8cm into the soil, and press some broken soil every 1m on the ridge, in case the strong wind blows the film away, so that the plastic film can really increase the yield of weeds by raising temperature, preserving moisture and killing weeds.