1. 1 Variety selection

Potato varieties are directly related to the growth and yield of potatoes, so choosing suitable varieties is an important link in potato planting. When selecting seeds, we should first choose seed potatoes that have not deteriorated, and also consider varieties with strong disease resistance and early maturity. Because the growth period of potato is relatively short, early-maturing varieties are beneficial to the complete maturity of potato in a short growth time. Selecting suitable varieties can create good basic conditions for improving potato yield and quality.

1.2 is used for seed potato processing.

In order to shorten the growth time, seed potatoes should germinate. The method of accelerating germination is to soak in formalin solution or gibberellin solution for about 20 minutes, and then take it out and disinfect it with carbendazim or thiophanate methyl solution. After drying in the sun, put the seed potato blocks on the germination bed, cover with wet sand and accelerate germination. When the buds grow to about 2 cm, take them out of the germination bed and put them in the shade. After 2 days of greening, stay away from planting at noon.

1.3 Select suitable soil.

Potatoes should be planted in places with high terrain, loose soil, deep soil layer and convenient drainage. Because potatoes are more suitable for growing in slightly acidic soil, the soil pH is lower than 6.8 and higher than 4.8. The incidence of potato scab is high when planted in high alkaline soil. It should be noted that to avoid potato continuous cropping, continuous cropping will lead to a higher and more serious incidence of pests and diseases. When the previous crop is cereal, corn and other crops, you can rest assured to plant them.

1.4 planting method

Before planting, soil preparation should be carried out, and the depth of covering soil should be at least 20 cm. Then, the soil should be ridged in a way of 80 cm wide and 8 cm deep. When planting, it should be planted in a single ridge and two rows, with a spacing of 20 cm and a row spacing of 10 cm, and 4500 plants per mu. When planting, make sure that the buds are facing up. After planting, cover it with 5 cm thick soil and compact it. If the planting time is early, cover it with plastic film. Cover the flower buds with plastic film, and then cut the plastic film.

2 potato fertilization technology

2. 1 fertilizer demand characteristics

Potatoes have the characteristics of liking fertilizer, and the demand for fertilizer is relatively large. We should pay attention to fertilization management to ensure high yield of potatoes. In potato fertilization, it is best to use organic fertilizer and chemical fertilizer as a supplement, and the key point is to apply base fertilizer well and topdressing early in time. Organic fertilizer is rich in fertilizer nutrition, which can improve soil structure, loosen soil and improve soil fertility. , help plant roots develop and expand potato tubers, and increase potato yield. In the process of potato growth, flowering period is the period with the largest fertilizer requirement. At this time, the weather is hot and the rainfall is abundant. It is necessary to seize the opportunity to apply fertilizer, which is conducive to the rapid decomposition of fertilizer and give full play to fertilizer efficiency.

2.2 Fertilization amount

When applying base fertilizer, 2000 kg of organic fertilizer, 4 kg of urea, 0/2 kg of phosphate fertilizer and 0/5 kg of potash fertilizer were applied per mu. Because organic fertilizer is slow to take effect, it should be assisted by chemical fertilizer. Nitrogen, phosphorus and potassium play a very important role in the growth and development of potatoes, and the demand for potassium fertilizer is the largest, followed by nitrogen fertilizer.