The growth of onions requires the root system to absorb nutrients and water. Whether it is planted in late autumn or early spring, seedlings are grown first and then planted, which causes the problem of seedling transplantation. How to improve the survival rate and enter the vegetative growth period early, there are several methods for reference.
1. Ensure a certain seedbed soil temperature, and the seedbed soil temperature should not be lower than 18 ℃ within 3-5 days after seedling division.
2. The seedlings should be divided sooner rather than later. The seedlings can be divided when there are 1-2 true leaves, and no more than 3 true leaves at the latest.
3. The day before seedling splitting, the "seedling water" should be poured to facilitate seedling rise, reduce root damage, and speed up the slow seedling after seedling separation. Don’t raise too many seedlings at one time, pay attention to shade, avoid too much water loss of seedlings, combine seedlings to select seedlings, require shallow planting, irrigation after planting, and the water should not be too large.
4. Plant rooting agent can be used. After the seedlings are raised from the seedbed, the seedlings are bundled together and dipped in the prepared rooting agent mucus to make the onion roots fully contact with the rooting agent, which is conducive to the early rooting of onions and also prevents onions Phenomenon such as dead seedlings and rotten noodles.
5. The method of removing onion leaves in the seedbed can be adopted, which is suitable for early spring planting. Most of the seedlings planted in early spring are cultivated in protected greenhouses. The stems of these seedlings are not thick and grow taller. They have a feeling of top-heavy and shallow roots. Two methods can be adopted to shorten the time of slowing the seedlings: one is to directly transport without transportation. Plant the seedlings just after the seedlings rise. After grading the onion seedlings, cut off the upper leaves with scissors 1 cm above the innermost heart. This is not only good for slow seedlings, but also good for rooting.
Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone
Co2 Fire Extinguisher,Co2 Powder Fire Extinguisher,Carbon Dioxide Extinguisher,A Carbon Dioxide Extinguisher
JIANGSU NEW FIRE FIGHTING TECHNOLOGY CO.,LTD , https://www.newayfire.com