How to Apply Top Dressing to Red Flowering Stalk (Purple Flowering Stalk)? A Full Analysis of the Latest Top Dressing Key Points
I believe many people are no strangers to red flowering stalk in the market. It is a common vegetable in the south, and basically every household in rural areas grows some. Its taste is soft, its nutritional value is high, and it can also promote appetite. Now is the critical period for the growth of red flowering stalk, and also an important stage for top dressing, so how should red flowering stalk be top dressed? Let's learn about it together with the editor.
1. Seedling-promoting fertilizer
Generally, about one week after transplanting, when the seedlings have survived, new roots have already grown, and at this time seedling-promoting fertilizer should be carefully applied to accelerate the growth and development of the seedlings. At this time, the top dressing is mainly nitrogen fertilizer, generally applying 5-10 kg of urea per mu. At the same time, attention should be paid to the concentration, because the seedlings are tender, the root distribution range is small, and they are relatively sensitive to fertilizer concentration. High fertilizer concentration will cause seedling burn. It is recommended to apply diluted in 1000 liters of water, or pour thin manure water around the root zone.
2. Rosette fertilizer
About 20 days after the first top dressing, the seedling leaves have already grown fully, and at the same time, large primary rosette leaves will also grow. At this time, rosette fertilizer needs to be applied heavily, which can meet the needs of the primary rosette leaves of red flowering stalk and the growth and development of the main stalk. It is best to apply both quick-acting fertilizer and long-acting fertilizer, such as cake fertilizer, manure fertilizer, compound fertilizer, urea, etc. It can be applied by opening furrows between the beds, scattering the fertilizer into the furrows, and then covering it firmly with soil. Generally, the standard is 30 kg of compound fertilizer + 1 kg of urea per mu.
3. Stalk-promoting fertilizer
Stalk-promoting fertilizer is generally applied after the main stalk is harvested. Holes can be dug on the outer side of the plant and fertilizer applied, then the fertilizer can be covered with soil from cleaning the furrows. Per mu, 10 kg of urea + 10 kg of potassium chloride can be used. Its main function is to supply the needs of the growth and development of secondary rosette leaves and side stalks.
4. Stalk-maintaining fertilizer
After the side stalks are harvested, according to the growth condition of the plants, top dressing should be applied once every 3-5 harvests, with 10 kg of urea applied per mu, to maintain the fertilizer demand of secondary rosette leaves and regenerated rosette leaves and ensure the smooth emergence of flowering stalks. Under good fertilizer and water conditions, the flowering stalks of these two grades have better commercial value. Otherwise, the emerged stalks are thin, weak, and short, with low commercial value.
The above is an introduction to the key points of top dressing for red flowering stalk. I hope it can help you. If you want to learn more related knowledge, please stay tuned to us.