What are the specific drugs for dried cabbage heartburn?

Dry heartburn of Chinese cabbage is a disease in the process of growing cabbage. When this disease occurs, the appearance of Chinese cabbage is not abnormal, but the internal leaves will deteriorate, so what are the specific drugs for dry heartburn of Chinese cabbage?

I. the cause of dry heartburn in Chinese cabbage.

In saline-alkali soil, watering industrial sewage, applying too much ammonium sulfate and ammonium carbonate, or uneven application leads to root burning, squatting time is too long, lack of soil water and so on are easy to cause dry heartburn.

Most of them appeared in the rosette stage, the edge of the heart leaf dried up, curled inward, and the growth was inhibited. At the beginning of the heading, the edge of the leaf was flooded, then turned yellow and translucent to yellowish brown scorched, and there was no abnormal appearance after the heading. The upper part of the 4-layer globular leaf in the middle of the interior is dark brown water-stained paper.

2. Special medicine for dry heartburn of Chinese cabbage

When dry heartburn occurs in Chinese cabbage, calcium oxide, naphthylacetic acid, calcium superphosphate, manganese sulfate solution and other agents or mixtures can be applied.

How to use it:

Watering and spraying 0.7% calcium oxide and 2000 times naphthalene acetic acid mixture; or 1% superphosphate solution, or 0.70 manganese sulfate solution, once every 5 mi 7 days, a total of 3 times.

III. Other methods

Dry heartburn of Chinese cabbage can also be improved by watering, fertilization, stubble mouth, calcium supplement and other methods.

1. Watering

Sufficient water should be ensured in the process of cabbage growth, and watering management should be strengthened in case of continuous drought, which can prevent cabbage from dry heartburn.

2. Fertilization

When planting cabbage, the base fertilizer should be used as little as possible, and more organic fertilizer should be used to control the pH of the soil, which can also prevent the dry heartburn of cabbage.

3. Stubble

The plot of planting Chinese cabbage avoids that the previous crops are crops with high demand for calcium, such as cabbage, which is disadvantageous to the growth and development of Chinese cabbage. If there are diseases such as navel rot when planting cabbage, most of the reasons are caused by lack of calcium, so it is not suitable for the growth of Chinese cabbage. Another plot should be selected or enough calcium fertilizer should be added before planting.

4. Calcium supplement

Calcium is very beneficial to the growth of Chinese cabbage, which can not only reduce the phenomenon of dry heartburn, but also improve the growth rate and quality of Chinese cabbage.

It is easy to spray the right amount of calcium peracid every other week or so from the beginning of the rosette period, which increases the content of calcium and lasts for about a month.