Potato covered with small arch shed can be put on the market earlier.

The potato cultivated in the small arch shed can generally be harvested around the end of March of the following year, which can be put on the market about 20 days earlier than the potato cultivated in the open field, with a net income of 800 to 1200 yuan per mu.

Select extra precocious varieties such as Dongnong 303 and so on. Dongnong 303 only takes about 80 days from emergence to being able to dig. It has strong growth potential, oblong tuber, yellow flesh, smooth epidermis, dense tissue, shallow bud, medium-sized tuber, neat and consistent, concentrated tuber and good quality. It is suitable for cultivation of extra early vegetable potato.

Selecting paddy fields with good drainage (dry soil can also be cultivated), ploughing at the beginning of ploughing after late rice harvest, drawing lines to ash in sunny days, opening ditches, the width of the box is 1.3 meters, the width of the trenches is 0.5 meters, and make the compartments and ditches neatly consistent, and then sow the ditches according to the row spacing of 45 cm, and the ditch is 12 cm deep.

It is suitable to sow early in mid-late November and sow when the soil is dry in sunny days. The seed potato is placed in the sowing ditch according to the plant spacing of 20 cm, keeping it at about 7000 tons per mu. Apply sufficient base fertilizer, 2000-2500 kg per mu of rotten pig manure or soil manure, 20 kg of urea, 20 kg of calcium superphosphate and 15 kg of potassium sulfate. Organic fertilizer strips are applied to seed potatoes in sowing ditches, while chemical fertilizer strips are applied to seed potatoes without contact with seed potatoes. Take the fine soil between the rows to cover the sowing ditch to make sure that the soil is fine.

Plastic film arch cover with bamboo every 2 meters or so, and then cover the plastic film, the central arch height of the small arch shed is about 60 cm. Take the box trench soil block to press the film around, and strive to compaction to prevent the wind from blowing away the mulch film.

Strengthen the field management after sowing, generally do not uncover the film before emergence, if you encounter high temperature weather after emergence, we should pay attention to the cooling at both ends of the film, but generally do not uncover the film. In case of frost weather, cover the small arch shed with grass curtain in the evening to keep warm, and uncover the film the next day. In case of freezing weather, cover both sides of the greenhouse film with grass curtains during the day, exposing the top light of the film, and completely cover the greenhouse film with grass curtains at night. In case of drought, furrow irrigation should be used to allow water to permeate the soil and prevent flooding, immersion and long-term irrigation. Attention should be paid to the prevention and control of aphids and 28-star ladybugs. Aphids can be controlled by corresponding pesticides such as aphid lice Jing (Yichuanjing, great hero, Kangfuduo, imidacloprid, etc.). 2.5% enemy killing and other corresponding pesticides can be used to control 28 lady beetles.

Timely harvest listing can generally start early harvest listing in mid-late March to strive for a good price.