First, prepare before broadcast 1. The soil requirements of the selected potato are not strict, but there is a high requirement for the porosity of the soil. Therefore, it is better to choose sandy loam soil with fertile soil, deep soil, and easy irrigation and drainage. 2. Rotation of potato crops does not work continuously, nor can it be used in conjunction with root crops such as solanaceous crops, sugar beets and carrots. It can be used in conjunction with cereal crops, legume crops, and some vegetables. 3. Selection of good varieties of selected varieties suitable for local conditions is an economic and effective measure to increase production, and the varieties often used include the Netherlands 15, Shushu 3 and the Atlantic Ocean. 4. Seed-potting and selection of potatoes will be completed in advance according to the number of days required for seed-processing. The germination treatment must be completed 40-45 days before sowing. Potato-shaped rules, fine-grained potato chips, soft-smooth inner smoothies, sprouted eyes, and sprouted tubers should be selected as seed potatoes. 5, pre-planting cuttings pregermination generally in the selection of seed potato block in 10-20 degrees room for 15 days, when the bud just germinated, or just sprouted buds can be cut into pieces. 6, cut the general three membrane cultivation in mid-December. Potato yield per plant is positively related to the size of the cuts, but the cuts are too large to be used in large quantities, but they are not economical. The cuttings are too small, although they are seedless, but they affect the seedlings' robust growth and yield. It is advisable to cut the weight of 20-30 g in general, with 1-2 buds on each cut to facilitate the control of density. The cuts should be disinfected in time during the cutting process. 7. Sterilization with carbendazim for disinfection 1 kg carbendazim with 100 kg talc dressing 1000 kg for disinfection. 8. The soil preparation site was deep-frozen before mid-December, before the soil was frozen, and a film was laid before the sowing in order to increase the ground temperature. 9, fertilization potato hi fat, base fertilizer must be fully applied, generally Mushi fertilization 2000-2500 kg, but also should be accompanied by the right amount of nitrogen, phosphorus, potassium ternary compound fertilizer, general mu dosage of 20-30 kg is appropriate . The demand for potash from potatoes is relatively large. Potassium sulphate and other potassium fertilizers can be appropriately increased. The best use of base fertilizer is to use 20 kg of mu. Insufficient sensation must be made before the next species, usually 5 days before sowing. Large rows of 50 cm and small rows of 40 cm can be used, and the spacing between the rows is maintained at 20 cm. Second, sowing is generally planted in mid-January and the amount of mu is about 125 kg. After drying, select the areas with high dryness and good ventilation, so that germination should be carried out at night to prevent heat damage. During the period, sprayers should be used to spray 1-2 times of water above the seed blocks. When the shoots grow to about 0.8 cm, they can be sowed. . Sowing with potato sowing machine, general potato seed, drip tape, mulch filming at the same time, while sowing side cover mulch film and the soil to the plastic film pressure. Third, seedling management sowing about 20 days, that is when the emergence of seedlings will be at the emergence of the mulching of the mulching film to prevent steamed seedlings, until the seedlings grow to 10 cm high around the plastic film with soil pressure Yan. Fourth, fertilizer and water management Potato growth generally do not have to water before the flowers to be seen after the water. In the middle and late stages of growth, the demand for water is relatively large. Generally, it is kept dry and wet, and it can be watered once every 10 days. Generally, it can be matured by watering 3-4 times. Stop watering 10 days before harvest. In early April, tuber enlargement period should be about 150 kg of ammonium bicarbonate topdressing. In the later stage, spraying potassium dihydrogen phosphate foliar fertilizer to extend the leaf functional period can prevent premature aging and increase yield. V. Pest Control 1. Insect pests mainly include aphids, thrips, and other pests, and can be controlled by spraying with imidacloprid and other agents. 2. Diseases use anti-virus drugs, can kill, agricultural streptomycin and other diseases, black shank disease, bacterial wilt and other diseases. Six, harvest attention timely harvest. Early maturing varieties of three-film cultivated potatoes can be harvested at the end of April and beginning of May. At this time, the potato in northern China has not yet been listed in large numbers. At this time, the market supply is relatively small and the price is relatively high. Early listing and trading can obtain higher economic benefits. Tetanus Vaccine,Hepatitis B Vaccine For Adults,Tetanus Booster,Td Vaccine FOSHAN PHARMA CO., LTD. , https://www.forepharm.com
High-yielding Cultivation Techniques of Potato Three Films