When the spring potato just emerged, it was timely to break the membrane and raise the seedlings. It was found that the dead seedlings and the lack of seedlings were supplemented with the ready-to-prepare seedlings. Qimiao after the top dressing balance fertilizer, mu urea 5 kilograms watering point, Mu urea recovery 5 kilograms of potato, high-concentration compound fertilizer 10 kg for the expansion of large fertilizer. Spring potatoes generally do not require burping, but flower stems must be removed before flowering to concentrate nutrients for tuber enlargement. Always keep the field dry and wet suitable, especially after the potato, the field can not accumulate water, it is necessary to drain the soil in time, otherwise it is easy to cause the rot of the tuber. The main diseases are viral disease, bacterial wilt, and black shank disease. It can be used to prevent virus disease and bacterial wilt by 1:200 times carbendazim soaking and prevent root disease with 200-250PPM of agricultural streptomycin. In the bud stage, there is a tendency for the crops to grow with 15% paclobutrazol in the plots with 30 grams of water and 50 kilograms of water spray. In the full flowering period, the use of Vitalin 4 25 ml water spray 20 kg, can make the plants dwarf, promote underground The enlargement of tubers increases the yield. According to field experiments, after spraying Vitrazine 4, the plant height can be reduced by 7.2 cm, the ratio of large tubers increased by 12.06%, and the yield increased by 9.02%.
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