Potato double ridge cultivation technique
First, seed potato preparation
1. Selection of good varieties: The varieties of “Cooperation 88â€, “Jianchuanhongâ€, “85g epidemic†and “Xiangshu No.6†which performed well in Jianchuan County were selected. The seed potatoes required health and the bud eyes were strong and full.
2, seed potato treatment: the seed potatoes to be planted should go through the dormant period. It is generally recommended to use about 50 grams of whole potato to be sown. The large amount of seed potato should be cut into pieces. When cutting, it should be cut longitudinally or beveled. It can be cut to about 70 grams per piece (improving drought resistance), and there are 2 pieces on each piece. Above the strong top buds, the seed potatoes are cut into pieces, and the wounds are rubbed with grass ash, and then exposed to sunlight for 2-3 days, so that the incisions heal and the wood is plugged.
Second, deep ploughing soil
Deep ploughing can improve soil water storage, water retention and drought resistance, improve soil physical properties, create good conditions for potato root development and potato swell. Generally, it requires about 30cm deep cultivation.
Third, fertilizer preparation
1. Farmyard manure: 2000 kg of farmer's fertilizer fully prepared for each mu.
2, fertilizer: 46% urea 15-20 kg, 16% calcium 70-90 kg, 50% potassium sulfate 12-15 kg.
Fourth, planting
1. Planting method: Planting with large ridges and double rows ensures 3,700-4,400 basic seedlings per acre.
2, planting: according to the topography, slope and wind direction, choose the direction of the line, according to the ridge distance 120cm pull line open (about 10cm deep), according to the large line spacing 80cm, small row spacing 40cm, plant spacing 25-30cm for seeding, evenly planted after planting Cover the farmyard manure and apply fertilizer, and finally cover a layer of 15-25cm of soil.
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