Early spring potato preparation

The preparation of potatoes should be done well before sowing, so that the potato can emerge better, cultivate robust plants and obtain high yields. Mainly should prepare the following aspects:

One, site preparation base fertilizer

Planted soil is best ploughed before winter and ploughed and leveled before spring sowing. Or, after the land is thawed, deep plowing is performed immediately. Basal fertilizers are required to be fully decomposed and the grazing horse dung is the best, which has the effect of improving species and reducing scab. The application rate is 1000 kg/mu, plus 100 to 150 kg of high-potassium compound fertilizer.

Second, warm seeds, drying seeds

For early emergence of seedlings and Miao Qi, seedlings uniform, Miao Zhuang, the seed potatoes that have not passed dormancy must be warm seeded and dried. In the first step, 30 to 40 days before sowing, warm seed germination is required, darkness is required, and the temperature is maintained at 20°C for 10 to 15 days until the top has about 1 cm of bud. The second step is to plant strong shoots. See shoots to prevent sprouting of yellow shoots and shoots when they are planted. Put the seed potatoes after the warm shoots in the astigmatism or in the sun and keep them at a low temperature of about 15°C to allow the shoots to be green. Stout, this period takes about 20 days. Note: Warm seeding and drying time should not be too long, otherwise it will cause bud senescence, which will cause premature plant failure in the future and be susceptible to early blight.

Third, the cutting process

Select cool and sunny weather in the early morning or evening when the cuts, cut into pieces should be triangular (or Fangdun block), each weight 30 to 50 grams, each bud left only one strong buds, excess buds with a knife off. The seed potato that has been sunburned can be used to cut large chunks, seed potatoes that are not warmed in the sun, and small and medium-sized potatoes adopt the vertical cutting method to utilize the apical dominance. The large potatoes are cut by the buds, the cutting knife must be sharp, and the buds must be cut in order to facilitate Root buds, before and after cutting the first knife should check whether the seed potato is sick, cut the diseased seed potato, immediately cut the knife with alcohol disinfection, cut about 40 pieces per kilogram of potato. Seed potatoes should be soaked while cutting and drying. Don't wait until the cuts are piled up before processing.

Fourth, seed disinfection

For every 50 kg of buds, use 70% thiophanate-methyl WP, 27 g, Miaosheng powder, 30 g, and talcum powder, 650 g. Mix well and mix seed. In order to avoid touching the seed buds, the buds can also be cut and mixed with the powder.

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