The reason why we can eat all kinds of fresh fruits and vegetables all the year round is because of the greenhouse cultivation, and with the development of rural agriculture, greenhouse vegetables are increasing. Planting in greenhouses will be watered. Different methods of watering in different periods, so how to properly water in winter? Let's take a look at the following.
Improper watering of greenhouse vegetables in winter
Watering greenhouse vegetables in winter can not be carried out blindly. If the timing of watering is improper, vegetables will also have various problems, such as rotten roots, roots, and plants.
Winter greenhouse vegetable correct watering operation essentials
1, the best watering time
The best time for watering is a sunny morning. At this time, the water temperature is closer to the low temperature. After watering, it will not be stimulated, the ground temperature will be recovered faster, and there will be enough time to eliminate the water. If water is given in the afternoon, the roots should not be adapted. Watering at other times is even more unsuitable, especially in rainy and snowy days.
2, watering method
In general, farmers who choose to water the greenhouse will choose to indigo under the mulch. If the conditions are good, they may choose to infiltrate under the membrane. In this way, the surface water can evaporate slowly, and the air humidity in the greenhouse can be reduced a lot, mainly to prevent disease.
3. Scientific water irrigation
In the way of water irrigation, membrane irrigation is generally chosen, so that the groundwater can evaporate slowly, the air humidity can be reduced a lot, and a lot of gas will appear in the greenhouse. Another point to note is that when the temperature inside the greenhouse rises and the heat increases, the temperature should be reduced a little, so that the greenhouse vegetables can be restored as soon as possible.
4, the amount of water to be controlled
Watering greenhouse vegetables should not be excessive. If there is too much water, the temperature of the soil will decrease, the absorption capacity of the roots will be weakened, the humidity of the air will increase, and the greenhouse effect will occur, so the amount of watering must be controlled. How much water should be poured depends on the weather and the growth of the vegetables.
5, pay attention to the ground temperature
The average ground temperature suitable for vegetable growth is also required, generally around 22 degrees. The temperature of the greenhouse in winter is generally around 18 degrees. If the water is not properly watered, the ground temperature will drop and the roots will be damaged, which will affect the growth of vegetables. Watering at low temperatures, preferably in the morning, after the grass is pulled open and then watered.
6, cover the film
Covering the mulch with vegetables, the water can evaporate slowly, without watering all the time, and the inside of the greenhouse will not be too moist, just to prevent pests and diseases. It can also increase the temperature of the surface, which is conducive to the faster growth of vegetables.
7, regulate water temperature
When watering, the water temperature should not be too low. Generally, it is poured with deep well water, the water temperature is higher, or a part of the water is stored in the greenhouse. After the temperature is up, it is more suitable to water the greenhouse vegetables. If the water temperature is 5 degrees lower than the temperature in the greenhouse, it will affect the roots of the vegetables.
8. Aftercare after pouring water
After watering the greenhouse vegetables in the winter, the temperature in the greenhouse should be raised to about 40 degrees in the first two days, and the shed for one hour, mainly to improve the ground temperature in the greenhouse. Then the ventilation should be appropriately increased to reduce the humidity inside the greenhouse. At the same time, it is necessary to spray some medicines for preventing diseases from vegetables to prevent the occurrence of pests and diseases.
The above is the introduction of greenhouse watering. Do you have anything to add after reading?
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