seed potato processing

before sowing, it is necessary to ensure that the dormancy period of seed potatoes has passed, and it is best to start sprouting, so as to germinate as soon as possible after sowing and achieve high yield. Please remove the sick and rotten potatoes when sowing. In addition to the above-mentioned detoxification methods, healthy seed potatoes can be effectively realized by purifying and rejuvenating (removing impurities and inferior quality) in high altitude areas every year. If the seed potato is large (more than 4g) or not germinated, cutting can be used, which can not only preserve the seeds, but also break dormancy, sprout early and increase the number of main stems (especially potatoes in autumn). Reach the season of high yield. Each seed potato weighs about 25 grams, and each seed potato has bud eyes. When cutting, the cutter can be disinfected with .2% potassium permanganate solution or 75% alcohol. Spraying Jin Rui toxin and Anke manganese and zinc after cutting can significantly improve the emergence rate and growth rate. After the cutting edge is dried and healed, it can be further germinated under dark and humid conditions; Make a germination bed in a cool and humid place. First, spread grass or sand with a thickness of 5 cm on the bed, then densely arrange seed potatoes (blocks) with a thickness of less than 5 cm, and then cover them with grass or sand with a thickness of 5 ~ 7 cm to keep the bed soil moist, and the bed temperature is 16 ~ 2℃. When the buds are .5-1 cm long, spread out the fine buds and sow them 2-3 days before sowing.

ground preparation

potatoes should be planted on ridges in winter and spring. The yield of ridged potato is obviously higher than that of non-ridged crops. Its main function is to promote rooting, rapid expansion of potatoes, good and smooth potato shape, drainage and ventilation. The soil should be deeply ploughed for 2-25cm, finely raked, leveled and ridged. The ridge spacing is about 8 cm, the groove depth is about 12-15 cm, and the ridge top is slightly flat. Trenching is carried out on the ridge surface, with a depth of 8-1 cm and a width of 25-3 cm. Basic fertilizer is applied in the trench, and then the soil is covered slightly. Autumn potatoes should be planted immediately after rice harvest, and drainage ditches should be dug immediately. The gutter is 3 cm wide and 3 cm deep; The gutter is 3cm wide, 15cm deep and 17cm wide. The excavated soil should not be piled up beside the ditch, and the ditch surface should be slightly arched to avoid water accumulation.

sowing time and planting density

The suitable sowing time for winter and spring potatoes is from December of the current year to February of the following year, and the potatoes can be sown with plastic film 15 days in advance. ? The sowing period in mountainous areas above 8 meters is February-April. Ditching or digging holes on the ridge for sowing, planting in two rows on each ridge, with a row spacing of about 3 cm and a plant spacing of about 3 cm, alternately arranged, with more than 5, plants per mu, 13-2 kilograms of seeds per mu and 8-1 mulches. Cm, if the seedlings are covered with plastic film after emergence, when the plants have 3-4 leaves, the seedlings are exposed to the opening of the film in time, and the plastic film is broken and pinched at the roots. The suitable sowing time of potato in autumn is from mid-August to early September. Autumn potato stubble, 5 rows on the box, row spacing of 35 cm, plant spacing of 22 cm, horizontal film thickness of 5 cm. Seed potatoes are placed on the soil surface, and the bud eyes are close to the soil surface, about 7 plants per mu, and the dosage of seed potatoes is appropriately increased. ?

then cover it evenly with 8-1cm thick straw, and tap lightly to ensure that it is not compacted. The straw should cover the whole frame without leaving any gaps. Can be intercropped with rape (no-tillage, which can effectively control weeds) and corn.