Select suitable varieties of autumn potatoes should choose varieties with good yield, strong disease resistance, strong drought resistance and short growing period.
Timely sowing, increase density Suitable sowing time for autumn potato is mid-to-late August, in order to ensure that the emergence of the first frost has a growth period of more than 60 days. Sowing should be done in the morning and in the afternoon, and it can be sown on a cloudy day. In the event of intense sun, the broadcast should be deeper, and with the broadcast with the cover soil, after sowing with grass cover, after removal of the grass will be removed to plant 0.8 to 10,000 / acre is appropriate.
Apply base fertilizer, increase application of phosphorus and potassium fertilizer to apply basic fertilizer, apply early fertilizer, apply high-quality soil and mixed fertilizer 3 to 4 tons/mu, pure nitrogen 8 to 9 kg/mu, phosphorus pentoxide 5 to 6 kg/mu, oxidation Potassium 9 to 10 kg is used as base fertilizer. Potatoes are chlorine crops. Potassium sulfate should be used instead of potassium chloride. When the potato grows to 20 centimeters or so, top dressing is carried out, and topdressing is about 15 kg/mu of urea; at the same time, magnesium fertilizer is applied. Studies have shown that in the potato growth process, such as magnesium fertilizer, not only high yield, and starch accumulation, good quality, each plant can be followed by 50 to 100 grams of magnesium sulfate.
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