High-yielding cultivation of potato in spring

Potato is a kind of grain and vegetable crop, the tuber is very resistant to storage and transportation, and is the main vegetable to regulate the off-peak season in the market. Dianzi Township of Pingyin County has accumulated rich experience in planting potatoes and achieved obvious economic benefits.

Soil preparation and fertilization in early March, soil preparation immediately after thawing, combined with deep ploughing fine Harrow per 667 square meters (1 mu), 2000 kg 3000 kg of high quality barnyard manure and 50 kg of superphosphate were applied, then mixed and leveled.

Virus-free Luyin No. 1 with high quality, high yield and early maturity was selected to treat seed potato. 5-7 days before sowing, choose sunny and warm weather to spread the disease-free and insect-damaged seed potatoes flat on canvas until the bud eyes turn green.

Cut and plant (1) choose the part of seed potato with bud eyes to cut into pieces according to a three-dimensional triangle, each piece weighs about 20 to 25 grams, when cutting diseased seed potatoes, use alcohol disinfection cutter. (2) cut into pieces and soak in gibberellin solution with a concentration of 5 mg / kg, remove and dry after 10 minutes for sowing. (3) planting density: row spacing 60 cm, plant spacing 20 cm, single plant in each hole, and apply ternary compound fertilizer mixed with phoxim into the hole as seed fertilizer to prevent the harm of underground pests. Then pour water into the planting ditch, cut it into pieces and plant it when the water is completely seeped, cover it with 5 cm thick soil, and finally cover it with plastic film.

Field management focuses on soil, fertilizer and water, among which water is the main factor affecting yield. (1) Seedling stage management: check the emergence of seedlings 20 days after sowing, break the membrane of the seedlings with top membrane, and seal it with soil at the break. This period can be combined with watering every 667 square meters of urea 10 20 kg, and then carry out intermediate ploughing and weeding to promote roots and trees. (2) the management of the growing stage: in order to prevent the seedling from becoming too prosperous, we should strictly control the fertilizer and water, try our best to make sure that the soil is not dry or watered, and cultivate the soil when the plant is closed. (3) tuber-bearing period management: pay attention to watering during flowering, generally watering once at the first flowering, full flowering and final flowering, to keep the soil moist all the time. In addition, every 667 square meters in the early flowering stage, 2025 kg of multi-component compound fertilizer can be applied with water, and potato expander can be sprayed on the leaves, and all the flowers can be pulled out at the same time.

The prevention and control of diseases and insect pests are mainly potato late blight, potato ring rot and potato ladybug, which can be controlled by Nonglilai, bacterial Sujing, Aweichuqing and other corresponding agents respectively.

Harvest in mid-late May to early June, choose sunny days, the soil is properly dry harvest.