Every year there are a lot of deaths of seedlings at the time of change. Faced with the higher and higher prices of seedlings, reducing the rate of dead trees and ensuring the successful survival of seedlings after planting has become a technical activity for vegetable managers to manage vegetables. Faced with the weather conditions of low temperature and low light, how can we achieve that the seedlings will not die after planting? The first is to choose roots and seedlings. In general, the nursery factory will select the seedlings when they go out, and remove the seedlings that are growing poorly in order to ensure that the seedlings are united. After the vegetable farmers received the seedlings, they first pulled out to check the growth of the roots, and the substrate surface was covered with white root hairs, indicating that such seedlings were more robust. If there are few roots and yellow hair, it is recommended that growers do not use such seedlings, or need to strengthen the cultivation after planting to reduce the risk of dead trees. The second is to do a good job of workmanship. The workmanship plate is the first line of defense against root disease infestation. On the one hand, it eliminates some of the pathogens found on the roots and substrates, and on the other hand, blocks the harmful bacteria in the soil.è¶ Slow seedlings invade the root system. At present, there are two main types of products used for retort, one is the beneficial bacteria product, which promotes the root system through bacteriostatic and prevents diseases, such as the 968 anti-bacterial antibacterial, root baby in Mumeitu, etc.; One is a protective bactericide, such as Prok, A-liang combination, Orange-like combination and so on. When soaking the tray, it is necessary to make it through the tray. Pay attention to the dosage of the medicine. If a variety of fungicides are mixed together with some root-strength seedlings, the concentration of the solution may be too large and the roots may be damaged. This should be avoided. The third is rational fertilization, avoiding direct contact with seedlings. Dead trees appear after planting seedlings. On the one hand, they are caused by diseases, and another important aspect is caused by irrational fertilization. Whether it is chemical fertilizers or organic fertilizers, after application, the seedlings should be prevented from direct contact with the roots and stalks during the colonization of the seedlings. Dissolving the fertilizer granules will cause the local soil solution concentration to be too large. Contact with the seedlings will lead to roots and stems. Stalks and other water loss, resulting in dead trees. Therefore, when the seedlings are planted, it is necessary to look at the situation where there is no concentrated fertilizer nearby. If there is, it is necessary to mix well with the soil or move the fertilizer granules slightly to maintain a certain distance from the seedlings. The fourth is to raise the ground temperature with water first, and then the majority of current vegetable farmers adopt the management method of watering after planting. In the winter and spring when the ground temperature is low, watering after planting is very unfavorable to the growth of seedling roots. This is because it takes a long time for the water to recover to normal temperature after watering. And if the temperature of the watering after seedling planting is too low, it will also 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 arrival time, the gully ridge was poured 3-4 days in advance, and the ground temperature was restored early in the enclosed shed, and then the planting hole was opened according to the water level line formed in the ridge. After 4 days of seedling colonization, the root system expanded outwards, and deep rooted water led deep soil under the guidance of the soil, thereby reducing the impact of changes in surface temperature on the root system. Adhesive Wound Dressing,Medical Small Wound-Care Plaster,Medical Waterproof Transfusion Wound Plaster,Medical Elastic Adhesive Aid-Band Surgimed Medical Supplies Co.,Ltd , https://www.surgimedcn.com