Potatoes are typically high-potassium, acid-resistant, and boil-free crops. Potato in the three elements of nitrogen, phosphorus and potassium need more potassium, followed by nitrogen, less phosphorus. The approximate ratio of nitrogen, phosphorus and potassium is 1:0.4:1.85. According to research, every kilogram of fresh potatoes produced requires 5.5 kg of nitrogen, 2.2 kg of phosphorus pentoxide, and 10.2 kg of potassium oxide. The law of potato fertilization is: Seedling-flowering, absorption of potassium accounts for about 95% of total absorption in a lifetime, absorption of nitrogen and phosphorus accounts for about 70% of the total absorption in a lifetime; In the later period of fertility, it absorbs more nitrogen and phosphorus, About 30% each, potassium is only about 5%. Therefore, potato fertilization advocates farmyard manure and nitrogen, phosphorus and potassium fertilizers for one-time application of base fertilizers, and mid-late crops for seedlings.

1, "Mi La", "Ukrainian Oyster" and other low-yield farmer fertilizer applied per mu 1500-2000 kg, 40-60 kg of acacia fertilizer as a base fertilizer one-time full.

2. 2000-2500 kilograms of farmyard manure per mu, such as "Shanshu No. 2", "Xuanshao No. 3", "Hui-2", "Weihao No. 3" and "Gama No. 2", etc. Special fertilizer 60-80 kilograms as a one-time application of base fertilizer.

3, "Cooperative No. 88", "Xuanshu No. 4", "Xuanshu No. 5" and other high-yield species applied 2500-3000 kilograms of farmyard fertilizer per acre, 80-100 kilograms of acacia fertilizer as a base fertilizer; 20-flowering period reuse 40 kg of acacia special fertilizer for top dressing.

In the scientific fertilization techniques of potato, whether it is farmyard manure or special fertilizer for artichokes, it is necessary to master the principle of fertilizing land with less land and leanly; applying low-yielding and early-maturing varieties; applying high-yielding late-maturing varieties to apply the principles of scientific fertilization to increase fertilizers. The effective utilization rate and use efficiency. Potatoes are sensitive to zinc and boron, and attention should be paid to the application of zinc and boron fertilizers (apricot kernel fertilizer contains zinc and boron fertilizers). Potatoes are chlorine-free crops and large amounts of chlorine-containing fertilizers should be avoided

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