Yellow-skinned onion is a species of onion, bulb flat or round to the highest pile shape, the skin is yellow to light yellow, yellowish flesh. The meat is dense and tender, sweet and spicy, and of good quality. Now we will introduce the cultivation techniques as follows:
The varieties with excellent varieties were selected as early as early-maturing varieties such as Golden Globe No.2 and Brocade. The medium-early-maturing varieties were selected from the group consisting of Golden Grand Green onions, Quanzhou Zhongjia Gaohuang and Quanzhou Yellow No.2; the late-maturing varieties were selected from Hongye No.3 and Dabao. Yellow skin onions can not be preserved, so as to avoid loss.
The standard for cultivating strong seedlings and strong seedlings is 3 leaves and one heart, 15 to 20 cm in plant height and 0.5 to 0.7 cm in stems. Cultivate strong seedlings as follows:
1 Seedbed selection and fertilization The selection of fertile, neutral organic soil with high content of neutral loam seedbeds requires 50 square meters per acre field. 15 days before sowing, high-quality soil and mixed fertilizer should be applied to fertilize and fertilize.
2 Fine onion chloroplast vernalized crops are sown in appropriate period. The appropriate sowing date is the key to high yield of strong seedlings. Seeding is too early and the plants before winter are too large, and it is easy to produce early bolting. The planting time was late, and the plants before winter were small, with heavy frost damage, slow growing back to green, and low yield. It is generally appropriate to sow in mid-September. 150 grams of seeds per mu of field. Before sowing, the seedbed is first made into a 1.2 to 1.5-meter-wide broom, and the cockles are smashed. After the water is poured, the seeds are spread on the seedbed twice in uniform, and then the soil is finely grounded. 1.5 cm thick. The thickness of the soil should be consistent. After the soil is covered with clay, 33% of the straw is sprayed with 150 kg of water and sprayed with 30 kg to prevent weeds. Simultaneously spread bait to control underground pests. In order to ensure the whole seedlings, it must be covered with rice straw or grass mats after sowing, generally 5 to 7 days to emerge. Remove the cover promptly after emergence.
3 After the emergence of seedling management, according to the growth of onion seedlings and soil moisture timely pouring a small water. If thin seedlings are found, 5 kg of urea can be applied per acre bed in combination with watering. Wang Miao should appropriately control water to promote robust growth. If weeds are manually removed in time, pests and diseases can be prevented and treated in time.
Daejeon colonization and management
1 Fertilizer basal fertilizer has high onion yield and large amount of fertilizer. Before transplanting Mushi 5000 tons of high-quality soil miscellaneous fertilizer, chemical fertilizers and nitrogen 15 kilograms, pure phosphorus 10 to 12 kilograms, 15 kilograms of pure potassium, fine soil preparation for rake, hoe width of 2 meters.
2 Transplanting in proper period, the suitable planting time for the planting of yellow-skinned onions is generally mid-November, and it is susceptible to freezing injury later in the day. Strict onion grading when planting, it is best to use 2 leaves from one heart to 3 leaves a 15 to 20 cm plant height seedling colonization. Do not plant seedlings, dwarfing seedlings, leggy seedlings, tillers, overage seedlings. The spacing between rows is preferably 2015-17 cm, and 1.8-20,000 acres are planted.
3 to improve the quality of transplanting requires film cover, before the film covered with herbicides 33% of grass weed 150 ml water 30 kg spray, and then cover the film planted. Transplant with water to ensure quick return. Planting depth of 2 to 3 cm is appropriate, which is conducive to lateral growth of onion bulbs, too deep and shallow are not conducive to high yield.
4 Winter and spring management Overwintering water is poured according to the conditions of wintering. After returning green in spring, the combination of pouring water and urea of ​​Mushi 8 to 10 kg, finely crushed superphosphate 20 kg. About 30 days after returning green, it enters a period of prosperous growth, and it is necessary to combine fertilizer and water to meet its growth needs. At this time, urea is applied in 15 to 20 kg of urea. Phosphate stems should be filled with horse water 10 days prior to the expansion of the phosphorus stems, and then the seedlings should be appropriately planted to promote bulb enlargement. During this period, the temperature is high, and the amount of growth is large. The soil should be kept moist. When the diameter of the bulb reaches about 3 cm, 10 to 15 kg of urea and 5 to 10 kg of potassium sulfate are recovered according to the growing trend. It was found that individual strains of bolting should be removed as soon as possible to promote bulb enlargement.
5 When timely harvesting of the onion bulbs approaches maturity, the stems on the ground are softly laid down and irrigation should be reduced to reduce the water content of the bulbs and increase their storage stability. The harvest should be conducted on a sunny day and fully aired after harvest to prevent spoilage and facilitate storage.
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