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In the winter, the main factor determining the growth of vegetables is temperature, while the small ones are fertilizers. Some people think that the plants grow slower or even grow smaller than they are. This is a wrong assumption. Therefore, under the condition of guaranteeing basic fertilizer and bottom boring, 1) During the month, the low-temperature period should be as small as possible, and water should be applied as small as possible. After the beginning of spring, as the temperature rises, the length of sunshine can be given as long as possible. However, the amount of watering and top dressing should be too small at one time, and it should be added to the peak of harvesting after the vernal equinox. Large-scale water and fertilizer management ensured that the yield was low due to weak root absorption at low temperatures, and the plants grew slowly. The demand for fertilizer and water was also low. The method of increasing the temperature by planting ridges on top of mulching film, digging ridges and cultivating in order to reduce temperature was reduced. Watering times In addition, after each watering, the humidity of the air will be increased, which increases the chance of plant sensation. Therefore, after the watering, the ventilation volume should be appropriately increased to eliminate humidity. Using greenhouse housekeepers, control ventilation can be achieved when it is most needed to achieve the best results.
The solar greenhouse that we promoted recently has its heat sourced from sunlight, and it depends on its good thermal insulation. It is known that the growing conditions that allow thermophilic fruits and vegetables to grow at temperatures above the limit in the winter are known from all over the world. Most of the sheds’ structure and insulation and cold protection facilities are as small as possible, and there is still a small gap from the standardized structure facilities. Therefore, it is difficult for some strong cold currents and prolonged cold and cloudy snow weather to resist. When the room temperature drops to 7°C, and continues for more than s hours per day, heating and heating should be performed. Temporary fire paths can be installed or furnaces can be added indoors. The small amount is that the force heating must have a flue. Take harmful gases out of the room to prevent people and vegetable poisoning. The ideal is to maintain the minimum room temperature above 10°C by heating.
After the management of greenhouse butlers found that the greenhouse management in winter mainly based on insulation, ventilation is relatively small, the indoor vibration of the disease caused by the formation of favorable conditions, especially in the easy to 'neutral' things gable, low The humidity at the front edge of the greenhouse is even greater. These land forces tend to become centers of disease and spread around. Therefore, these land forces must be inspected frequently. One day, if any signs of the disease are found, ICI should be sprayed. Light spray protection in winter due to low temperatures, plant growth is not strong disease resistance is weak, so winter disease prevention should be the focus of work.
Application of greenhouse housekeepers in greenhouse cultivation
In the north of China, the average temperature is lower after entering the winter, and the sunshine hours are short. The rainy and snowy weather often occurs. Occasionally, strong cold currents are attacked, which brings great benefits to the growth of the hi-temperature fruit and vegetables grown in greenhouses. The December-Yuan month in which lX harmful weather is most likely to occur is a critical period for management and prevention. Therefore, to understand the characteristics of harmful weather and the harms caused, it is necessary to scientifically formulate preventive measures so that prevention can be prevented. , It is the key to ensure the safe wintering of vegetables and the high yield and efficiency of the whole year. During the cultivation of greenhouses, the application of greenhouse housekeepers is also very much appreciated.