The main points of the latest Onion Seedling raising techniques and methods

Onion is a very common side dish, which can be seen in all kinds of dishes in our country. At present, the area of planting onion in our country is also very large, and its planting technology is relatively mature. However, when planting onions, it is usually based on seedling and transplanting. Seedling transplanting can improve the growth ability, yield and quality of seedlings. Then the following editor has brought the seedling technology of onion, let's have a look!

1. Select superior species

Before raising seedlings, we should first choose a good variety of onion, which is closely related to the growth and yield of onion in the later stage. Therefore, the selection of varieties is very important, we should pay attention to the selection of varieties with strong growth, high yield and strong disease resistance when planting. Now the main varieties on the market are purple jade, new red star and other purple onions, the output of these onions is relatively high. Under normal planting management, the yield can reach 5000 kg / mu, and the yield will be even higher for some high-quality plots.

2. Seedbed preparation

The seedbed should be prepared before raising seedlings, and the soil of the seedbed should be fertile, deep and soft, with strong water and fertilizer conservation, and no crops of the same family have been planted for at least two years. Control the area of the nursery bed, and then turn the ground deeply, and the depth is controlled at about 25-30 cm. Combined with the application of sufficient base fertilizer, the base fertilizer is mainly rotten farm manure and compound fertilizer. The fertilizer is fully mixed with the soil to improve the utilization rate of fertilizer. Finally, water the bed and wait for sowing.

3. Sowing seeds at the right time

The sowing time is closely related to the growth of seedlings, which will directly affect the yield and quality of onions. Sowing prematurely will prolong the growth period of seedlings, resulting in excessive nutrient consumption and excessive absorption, resulting in bolting of seedlings. If sowing too late, the resistance of the seedlings will decline, the cold tolerance is insufficient, and it is easy to freeze and kill the seedlings when they are overwintering. Therefore, when sowing, we should pay attention to the sowing time, and the specific sowing time is determined according to the planting area, variety, weather change and other factors. For example, the central and southern regions are generally sown about 3 days after White Dew. Cover fine soil after sowing, and then use appropriate amount of herbicides to do a good job of weeding.

4. Seedling stage management

Cover straw after sowing, improve the ability of the soil to maintain heat preservation, properly prevent rain, and then keep the soil moist before the seedlings break the soil. When about 65% of the seedlings are unearthed, the straw can be opened and then properly watered according to weather changes to prevent soil consolidation from affecting the growth of the seedlings. Then reasonable topdressing, through the management of water and fertilizer to cultivate seedlings. In the management of seedlings, we should not only prevent the seedlings from growing too large and cause early bolting, but also prevent the seedlings from being too weak and reduce their resistance. Then when the seedling grows about 4 true leaves and the plant is about 22 cm, it can be planted.

The above is a brief introduction of the key points of onion breeding technology. Onion breeding is an important part in the process of onion planting. We should avoid using the method of direct seeding in the open field as far as possible, enhance the growth ability of seedlings, increase the yield and expand the economic benefits of planting. That's all for today's introduction. This article is for reference only. Thank you for your reading and support.