Film mulching cultivation techniques of Spring Potato with High yield and good benefit

When planting spring potato, selecting varieties, applying sufficient fertilizer, sowing at appropriate time, controlling diseases and insect pests, etc., the yield per mu can be 2000kg, and the commodity rate is as high as 80%.

potato mulching culture

Selected varieties: virus-free potato seed potatoes, such as Zhengshu 6, Dongnong 303, Jinyan 8, Zhongshu 3 and other early-maturing, strong disease resistance varieties.

Select crop: select deep soil layer, loose fertile soil, acid sandy loam planting potato. The previous crop should be vegetables, rice, soybean, etc. of Liliaceae and Cucurbitaceae, and the plots planted with solanaceous fruits and peanuts in the previous crop should be avoided as far as possible to reduce the harm of scab disease, cancer disease, insect and white grubs.

Fertilizers: 5kg pure nitrogen, 2 kg phosphorus pentoxide and 11kg potassium oxide are needed for each 1000kg potato production. If the yield per mu is more than 2000kg, 2000kg decomposed organic fertilizer, 10kg urea, 70~80kg sulfur-based compound fertilizer and 15~20kg potassium sulfate shall be applied per mu. Film mulching, the above fertilizer can be used as base fertilizer, one-time application.

Cutting and germination: 20-25 days before sowing, cut the seed potato into pieces, the weight of the potato pieces is about 40g, each potato piece has 1 - 2 bud eyes, soak in 25% carbendazim 500 times solution for 10 minutes, take out and dry, cut and air dry, pile the potato pieces in the leeward sun to germinate, pile 60 - 80cm high, cover with straw 10cm thick, cover with a layer of plastic film, and seal the film around tightly. Sowing when bud length is 0.5~1cm.

Early sowing: film mulching cultivation, sowing in late January to early February; open field cultivation, sowing can be postponed to mid-February. 10 days before sowing, spreading organic fertilizer, urea and potassium fertilizer, ploughing, applying compound fertilizer, and ridging, wherein the ridge distance is 85 - 90cm and the ridge height is 30cm. Sowing on sunny days, sowing depth above 10cm, seed quantity 180~200kg per mu, basic seedlings about 4500. After sowing, spray 100ml 50% acetochlor or 33% fertilizer 100ml per mu, add 50kg water to remove, and film 30 minutes after spraying.

Proper pruning: after the seedlings, each plant leaves a strong main stem to grow, except for the plants on both sides of the tree, so as to increase the yield and improve the commodity rate.

Disease control: the main diseases of spring potato are late blight, black shank disease, scab disease, etc., resistant varieties should be selected, crop rotation. Pests are mainly grub, ground tiger, aphid and so on. To control white grubs, 1.8kg of 3% ground pest was sprayed per mu before sowing, and 300ml of 50% phoxim and 1500~ 2000kg of water were applied to each mu before budding in early April. To control aphids, spray 15g 10% imidacloprid and 50kg water per mu from late April to early May, and then apply it again after 7~10 days.