How to use vegetable planting skills skillfully to increase greenhouse output in winter

Maintaining sufficient moisture is an important factor to ensure the normal growth of vegetables. Choosing reasonable watering time and water quantity is an important measure to improve vegetable yield, especially in winter. Because of the low temperature in the greenhouse in winter, the absorption and evaporation of water are slow, which is easy to adversely affect the air moisture content and vegetable growth in the greenhouse. The basic precautions are as follows. On the one hand, the watering time is chosen when the temperature is high, usually after 1 1 o/o in the morning and before 2 pm. During this period, the temperature in the vegetable greenhouse is high, which will not cause freezing injury. You can also choose deep groundwater with higher temperature for irrigation. Both, pay attention to observe and measure the temperature of each part in the shed. Generally, the sunny temperature is slightly higher, so you can water more, and the area with lower temperature must be watered less. Considering the influence of the weather, water more on sunny days and less on rainy days. This is because rainy days have high water content and low air pressure, which is not conducive to water absorption and is easy to cause frostbite. The best way is to use drip irrigation, which can save water, reduce the humidity in the greenhouse and keep the environment dry, which is beneficial to the growth of vegetables and the absorption of water.

Second, rational fertilization.

Proper amount of organic elements is also an essential raw material for vegetable growth. To increase greenhouse yield, organic base fertilizer should be selected first. Organic base fertilizer can not only increase the content of trace elements in soil, but also promote the reproduction of beneficial microorganisms in soil, change soil structure and enhance the storage and supply of organic fertilizer and water in soil matrix. When applying fertilizer, it is best to pay attention to the principle of multiple times and small amount, and set aside a certain time for vegetables to absorb fertilizer.

Third, reasonable ventilation.

Although the temperature is low in winter, ventilation is necessary. Reasonable ventilation is to improve the fresh air in the greenhouse, reduce the carbon dioxide content, and reasonably transmit light, so that vegetables can carry out photosynthesis to a great extent and prevent diseases that are not conducive to vegetable growth such as yellowing and weak light.

To sum up, when planting vegetables in greenhouses in winter, many aspects need special attention in order to prevent vegetables from cold and frostbite in winter. We can also use these methods and techniques to increase vegetable production 1.