Potatoes are tuber crops that prefer loose, sandy soil and require a cool climate. The amount of base fertilizer generally accounts for more than 2/3 of the total amount of fertilizer. The base fertilizer is mainly fully decomposed farmyard manure, and a certain amount of chemical fertilizers, especially phosphorus and potassium fertilizers, are used as base fertilizers. This can improve the physical properties of the soil and is beneficial to growth and Knot potatoes. The amount of nitrogen fertilizer in the base fertilizer accounts for about 50%. The application method of the base fertilizer is to apply it in a ditch or hole before planting, with a depth of about 15 cm. The specific amount of fertilizer applied is for a plot with a yield of about 1,500 kilograms per mu. Apply 1,500-2,500 kilograms of organic fertilizer per mu, 20 kilograms of urea, 20-30 kilograms of ordinary calcium, 10-12 kilograms of potassium fertilizer, or 40 kilograms of high-nitrogen and high-potassium compound fertilizer. -60 kg, the amount of fertilizer applied in high-yielding areas can be increased appropriately. Fertilizer should be applied 2-3 cm away from the seed potatoes to avoid direct contact with the seed potatoes, and should be covered with soil after application.

Top dressing should be applied rationally in conjunction with the potato growth period. During the seedling stage, top-dressing nitrogen fertilizer should be applied, which can be combined with cultivating the soil and applying 5-8 kilograms of urea per acre with water to help preserve the seedlings. After potatoes bloom, rhizosphere topdressing is generally not performed, especially nitrogen fertilizers. After potatoes bloom, phosphorus and potassium fertilizers are mainly sprayed on the leaves. Spray 50 kg of 0.3-0.5 potassium dihydrogen phosphate solution per acre of leaves. If there is a nitrogen deficiency, add 100-150 grams of urea and spray it every 10-15 days for 2-3 times. Potatoes are sensitive to boron and zinc. If the soil is deficient in boron or zinc, 0.1-0.3 borax or zinc sulfate can be sprayed outside the roots. Generally, spray once every 7 days, twice in a row, with a solution of 50-50% per acre. 70kg is enough. Potatoes are potassium-loving crops, and special attention should be paid to the application of potassium fertilizers in balanced fertilization. At the same time, it is not advisable to apply too much chlorine-containing fertilizers, such as potassium chloride, and potassium sulfate should be used, otherwise it will affect the quality of potatoes.