The main points of green onion seedlings in autumn

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In recent years, farmers in Yinan County have greatly benefited from planting green onions, especially the fresh onions that were marketed from July to August this year. The average price of the wholesale market reached 1 yuan/kg, the highest price was 1.5 yuan/kg, and the output value was about 5,000 yuan/mu. . In order to achieve good yield and yield of welsh onion, it is crucial to cultivate strong seedlings before winter. According to the successful experience of planting fresh shallots for many years in Gaogezhuang and Gaoshang villages in Fanggezhuang County of our county, scallion cultivation and strong seedlings should mainly grasp the following key technologies:

1. Variety selection. Weinan County onion varieties mainly choose cold resistance, light blue long, lodging resistance, high yield and good quality Liao onion No. 1 and Tang onions.

2. Sowing period. Scallions are very strict on the sowing date and are generally sown at the end of September of the previous year. Seeding early in the winter before the large seedlings, easily through the vernalization in the spring of the second year of early convulsions can not grow strong seedlings, sowing seedlings before the winter is thin, easy to die during the winter.

3. Choose seedlings. Choose flat, ventilated sunny, close to water, loose soil and fertile soil. Avoid breeding seedlings on the same plot, and plots with underground pests should be controlled by pesticides.

4. Soil fertigation. The application of potassium sulfate compound fertilizer 15 to 20 kg per mu. To do 畦, 畦 width about 1 meter, 7 meters long, easy to manage. The area ratio of seedbeds to planted fields is 1:6 to 1:4. Calculated according to sowing volume, 500 grams of seeds can be planted 1,000 square meters, equivalent to 0.35 kilograms per mu.

5. Immersion germination. Before sowing seeds, they are soaked in cold water for 8 to 10 hours. After they are removed, they are wrapped in a clean damp cloth and placed in germination at 15°C to 20°C. They are rinsed with fresh water once a day. After about 6 days, the radicles should be exposed in time. sowing.

6. Seeding method. In order to make the seedlings grow neatly, it is best to use drills, according to the spacing of 10 to 15 centimeters, shallow depth of 1.5 to 2 centimeters of open ditch, along the ditch irrigation, water soaked evenly sowed in the ditch. After the whole broadcast, it was flattened.

7. Seedling management. From sowing to unearthing, we should always keep the ground moist to prevent soil compaction. When the young shoots are unearthed, we can pour water once to make the cotyledons straight and take roots to stabilize the seedlings. Afterwards, according to the public opinion, we can pour 1 or 2 times of small water again. Many, in order to avoid seedlings grow, and pay attention to timely cultivation and weeding. The seedlings must be poured with frozen water before wintering, or they can be covered with a layer of excrement to facilitate the raising of the ground temperature and ensure the safe wintering of the seedlings. After returning green, it is poured back to Qingshui for 1 time. As the temperature rises, it enters the seedling growth stage. It should be combined with watering, top dressing 2 or 3 times, and weeding the seedlings. After the second thinning, appropriate water control to prevent onion seedlings. Lodging, appropriate 10 days before planting seedlings, onion training.

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