What should be paid attention to when vegetables are changed in winter?
Currently, some of the winter quail vegetables are being harvested and removed from the fields, while it's time to prepare for planting winter and spring crops. Due to the cold weather and tight schedule, farmers often overlook certain important steps, which can lead to poor plant growth after sowing. To ensure healthy development of winter vegetables, there are three key areas that should be carefully addressed: First, proper disinfection of the greenhouse is essential. After harvesting, farmers rush to plant new crops without taking the time to clean and disinfect the greenhouses thoroughly. This oversight can leave behind pathogens that may cause diseases in the next crop. Therefore, before planting new vegetables, it's crucial to remove all dead leaves and debris from the greenhouse and apply a proper disinfectant to reduce the risk of disease outbreaks. Second, the base fertilizer must be fully decomposed during winter. Due to low temperatures, chicken manure stored outside the greenhouse often doesn't ferment completely. In enclosed greenhouses, this can lead to the buildup of ammonia, which is harmful to plants. Before applying base fertilizer, always check if the chicken manure is fully decomposed. If it still has a strong odor or hasn't turned dark brown, it's not ready. Mixing 1 kg of compost activator with 2 cubic meters of chicken manure can speed up decomposition. Also, avoid using high-nitrogen fertilizers as base fertilizers in winter, as they can release excess ammonia and damage the plants. Third, pre-warming the soil before planting is critical. In winter, low temperatures can slow down root development, and high humidity combined with cold can lead to root rot. To prevent this, farmers should close the vents of the greenhouse two days before planting to allow the soil temperature to rise. This helps the seedlings establish roots more quickly and promotes faster emergence after planting. By focusing on these three aspects—greenhouse sanitation, proper base fertilizer application, and soil warming—farmers can significantly improve the health and productivity of their winter crops. Taking these steps ensures better growth conditions and reduces the risk of disease and environmental stress, ultimately leading to a more successful harvest.
There are two kinds of external fixations for pelvic fractures, namely temporary fixation and therapeutic fixation.
Temporary fixation depends on on-site assistance. Assuming that the patient has serious open injury, severe hemorrhagic shock, and serious fracture dislocation, the rescue personnel will provide temporary external fixation support to maintain the stability of the pelvis, reduce secondary injuries, and correct the continuous aggravation of hemorrhagic loss on the scene. The therapeutic external fixation stent is used to correct the dislocation of the fracture through routine examination after admission, evaluation of the injury, and external fixation installation through treatment, maintain the relative stability of the fracture, create a very quiet environment for the fracture healing, and lay the foundation for the healing of the fracture. External fixation is an important method for pelvic fractures.
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