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First, the spring potato cultivation 1, site preparation fertilization: Select fertile soil, good permeability of sandy loam soil, combined with winter ploughing, per acre Shi quality soil mixed fertilizer 4000-4500 kg, 50-60 kg of phosphorus and potassium fertilizer, deep plowing. 2. Selecting germination: choose the early-maturing variety Luyin No. 1 and use 100-125 kilograms of seed per acre. Each 500 g of seed potato should be cut into about 20 pieces in the longitudinal direction to ensure that each piece of seed potato contains the terminal buds, which are then warmed after cutting. A germination. 3, sowing: the use of arch shed planting, in early January cut prime germination, the beginning of spring, suitable for planting ditch planting, ditch depth of about 6 cm, after the next kind of cover soil 6-8 cm thick, planting spacing 60 cm, spacing of 20 cm. After covering the soil, flatten ridges, spray 200ml of acetochlor per acre on the ridge to prevent weeds, cover the plastic film, and build a shed. 4, field management: timely membrane ruptured seedlings, no ventilation before emergence, after the emergence of the greenhouse temperature should be maintained at 20-25 °C. Into the end of April can be fully exposed film ventilation. Strengthen the management of fertilizer and water, combine cultivating with shallow soil, deepen the sloping layer between rows, and promote early-onset trees. In the later period, the soil is cultivated and the ridges are intensively cultivated between the ridges, and the vegetative growth is appropriately controlled to promote the expansion of the tubers. In addition to cultivating soil, timely spraying of pesticides to prevent late blight and locusts. 25% carbendazim can be used to prevent late blight, and 40% omethoate 1900-2000 times can be used to control aphids. When the potato buds off, the removal of buds can increase production by about 15%. The late stage foliar spray fertilizer prevents premature aging and timely harvest. Second, the summer onion cultivation 1, early onion transplanting: Potato harvested at the end of April, grab the land when transplanting sorghum transplanting onion seedlings. Before transplanting, apply 30 yuan of compound fertilizer and 20 kg of urea per acre of the ditch, and plant the ditch with a row spacing of 40 cm, a spacing of 4 cm, and a density of 40,000 plants per mu. Watering after planting. 2, field management: 15 days after planting combined with watering 10 centimeters away from the root chase fertilizer 1 times, per kilogram of potassium sulfate compound fertilizer 16 kg, 15 kg of urea. After 30 days, 25-40 kg of urea was topdressed per mu and attention was paid to pest control. Can be listed in July. Third, the winter cabbage cultivation 1, selection seedlings: selection of good quality, strong winter, late bolting, cold winter varieties strong winter sweet 2. In the middle and late July, soil preparation and high-quality soil heterotrophic seedlings were planted. Before planting, pour enough bottom water, spread it evenly after sowing, or broadcast, cover soil 2-3 cm thick. Immediately after the emergence of weeds and cabbage caterpillars. 2. Transplanting: After scallion harvesting, in mid-August, the seedlings were transplanted at 4-6 leaves with a row spacing of 45 cm and a spacing of 35 cm. Before transplanting, sufficient base fertilizer should be applied, and 3500-4500 kg of high-quality soil-fertilizer and 40-50 kg of ternary compound fertilizer should be applied per acre and watered after planting. 3, field management: Transplanting 20-30 days, about 25 kg of urea per acre, with watering into the lotus root period and then applied 23 yuan compound fertilizer per acre. In November, suitable topdressing and pouring of overwintering water will improve the ability to resist drought and cold. Knotted cabbage can be harvested and marketed at this time. When the leaf pack reaches 80% or more, it must be covered with straw if not harvested.