One, site preparation
Plowing depth is about 30cm, and it is better to be more sturdy and finer. For drip-irrigated plots, there must be no large earth blocks, and sharp impurities such as stones in the plots should be cleared out so as not to damage the dropper belt.
Second, concentrated fertilization
Potatoes have a large demand for fertilizers. According to the actual situation, based on the principle of economical efficiency and high yield, conventional fertilization methods can be used before fertilizing by soil testing, 2000 kg of farmyard manure is applied to mu, and 10 kg of diammonium phosphate is applied. 3 kg of urea and 6 kg of potassium sulfate are used as base fertilizer.
Third, the use of virus-free seed
The virus-free seed potatoes were rigorously selected 15-20 days before sowing. Farmers should choose legal, qualified and reputable seed potato management companies to purchase virus-free seed potatoes, choose potato-shaped rules, and have a smooth and bright potato peel, with a weight of 75-100 g. . When selecting the seed potato, it is necessary to strictly remove the epidermis cracks, malformations, pointed heads, necrotic buds, raw lesions, or black rot tubers of the umbilicus.
Fourth, the germination
The selected seed potatoes were germinated in a large vacant room at 12-15°C with scattered light conditions. During this period, attention was paid to preventing freezing and freezing. When the buds grow 1-1.5cm, they are sown. Avoid germination can not be placed directly under the light, can not be packed in a bag together, be careful to prevent broken buds, stored in a well-ventilated place.
Fifth, science cuts
Before cutting each person, prepare two cutting knives, 75% alcohol or 0.5% potassium permanganate disinfectant solution, immerse the cutting knife in the disinfectant solution. When the cutting knife cuts one seed potato, immersed in the disinfecting solution. Sterilize, use another knife to cut a seed potato, and use two cutters for disinfection. When cutting, try to use the advantage of apical buds and cut into squares to reduce the wound area, ensure that there are 1-2 buds on each tuber, and weigh about 40-50 grams.
Six, sowing
When the soil temperature of 10cm is stable at 8 to 10°C, it can be planted. The general sowing date should be selected from late April to early May.
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