Every year, when there are many sheds, there are many cases of seedlings dying. In the face of the increasing price of seedlings, reducing the rate of dead trees and ensuring the success of seedlings after planting has become a technical activity for vegetable farmers to manage vegetables. In the face of the low temperature and low weather conditions, how can we do not die after the seedlings are planted?
Choose strong seedlings
Generally speaking, when the seedling plant is out of the seedlings, the seedlings will be selected, and the seedlings with poor growth will be removed to ensure the uniformity of the seedlings. After receiving the seedlings, the vegetable growers must first pull out the growth of the root system. The surface of the substrate is covered with white root hair, indicating that the seedlings are more robust. If there are few roots and yellow hair, it is recommended that the vegetable farmers do not use such seedlings or strengthen the cultivation after colonization to reduce the risk of dead trees.
Do a good job
The sputum tray is the first line of defense against root infection by disease. On the one hand, it eliminates some pathogens on the roots and substrates, and on the other hand, it blocks the harmful bacteria in the soil. Root system. At present, there are mainly two types of products for use in pans, one is a beneficial fungus product, which promotes roots by means of bacteria inhibition, and prevents diseases; the other is a protective fungicide. When smashing the tray, it is necessary to soak the trays. Pay attention to the amount of the medicinal agent. If a mixture of various bactericides is added, and some rooting and stimulating agents are added, the solution concentration may be too large and the roots may be damaged. This should be avoided.
Rational fertilization to avoid direct contact with seedlings
Dead trees appear after planting, which is caused by diseases on the one hand, and another important aspect is caused by unreasonable fertilization. Whether it is chemical fertilizer or organic fertilizer, the seedlings should be kept away from the roots and stems when they are planted. After the fertilizer particles are dissolved, the concentration of the local soil solution will be too large. If it is in contact with the seedlings, it will lead to roots and stems. The stalks lose water, and the dead trees appear. Therefore, when planting seedlings, it is necessary to look at the situation where there is no concentration of fertilizer nearby. If it is, you need to mix well with the soil, or move the fertilizer particles slightly to maintain a certain distance from the seedlings.
Watering first to raise the ground temperature, then planting
At present, most vegetable farmers adopt the management method of watering after planting, and in the case of low ground temperature in winter and spring, watering after planting is not conducive to the growth of seedling roots. This is because it takes a long time to warm after watering. Returning to normal temperature, and the temperature of watering after seedling colonization is too low, it will damage the root hair in the original matrix, and increase the risk of dead trees.
Therefore, in the winter and spring season, it should be poured first. After a general understanding of the time of seedlings, the ridges and ridges are irrigated 3-4 days in advance, and the closed sheds are restored to the ground temperature early, and then the points are set according to the water level line formed in the ridges. After 4 days of planting, the roots expanded outward, and the roots were deeper under the guidance of deep water in the soil, which reduced the influence of the surface temperature on the roots.
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