Onion is a kind of vegetable variety with a large planting area in the central and southern parts of Hebei Province. This vegetable has the characteristics of low input, high yield, easy management and high efficiency. The first season of September is the best season for onion seedlings. The seedlings of onion are now introduced as follows:
Choose the best species in the production of purple jade, purple star, new red star and other purple skin types. These varieties generally produce 5,000 kilograms per mu, and the production capacity of high-yield plots reaches 7,500 kilograms. Linyi Fertilizer Network Copyright
Prepare the seedbed bed for seedlings. The soil should be loose, fertile and water-retaining. The plots of onions and garlic vegetables have not been planted within 2 to 3 years. The seedbed area per mu of cultivated fields is about 35 square meters, and the seed amount is 0.5 kilograms. Before planting, apply the fermented farmyard manure, apply 5 kg of ternary compound fertilizer with a ratio of 15-15-15 (calculated according to the area of ​​the seedbed of 35 square meters per mu), then plow the tillage, finely prepare the ground, and make 1.5~ 2 meters wide, watered, to be broadcast. Linyi Fertilizer Network Copyright
Appropriate sowing sowing date directly affects the size of the seedlings, which ultimately affects the yield of onions. Early sowing, prolonged seedling growth, will cause excessive nutrient area, seedlings are prone to convulsions in spring; late sowing, seedlings are weak, cold tolerance is low, wintering is prone to dead seedlings. Therefore, to achieve high yields, we should master the best seeding period. The most suitable sowing date in the central and southern parts of Hebei Province is suitable for 3 days before and after Bailu. It is spread by dry seeds and covered with fine soil after sowing. It is better to not see the seeds. After the soil is covered, 33% of the weeding bed can be sprayed with 100 ml of the weeding bed to remove the weeds on the seedbed. Linyi Fertilizer Network Copyright
The center of seedling management in seedling management is the main goal of cultivating strong seedlings. After sowing, cover a layer of wheat straw on the surface of the clam, which is good for moisturizing, anti-high temperature and rainproof. Before the emergence, the soil should be kept moist. When about 60% of the seedlings grow out on the seedbed, the cover can be removed. Sprinkle water in a timely manner according to the weather conditions, prevent the seedbed from squashing, and apply a small amount of urea in combination with watering to control the age-appropriate seedlings through fertilizer and water control. It is necessary to prevent the seedlings from growing too large, causing early convulsions, and avoiding the weak growth of the seedlings and affecting the safety of wintering. When the seedling grows to 4 true leaves, the plant height is 20-25 cm, and the diameter of the sheath is 6-7 mm, it can be colonized. Linyi Fertilizer Network Copyright
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