How to Water Vegetables in a Greenhouse? A Detailed Guide to the Correct Watering Method
Greenhouse vegetable growing is the most commonly used cultivation method today. It can not only increase vegetable yields but also allow off-season cultivation, making vegetables that normally hit the market in a specific season available all year round. So do you know how to water greenhouse vegetables? Let's take a look.
1. Watering Principles
When watering greenhouse vegetables, pay attention to climate changes. In summer, with high temperatures and strong sunlight, watering must be done reasonably to help the plants safely through the summer, which plays a decisive role in market yield and quality. So during high-temperature periods, water frequently. However, in low-temperature seasons such as winter and spring, watering requires care: water on sunny days, not on cloudy or rainy days; when watering on sunny days, do it in the morning, not in the afternoon; avoid flood irrigation and instead use drip irrigation.
2. Watering Methods
Water according to how dry or moist the soil is. Do not water if there is no drought. Before watering, grab a handful of soil from 10 cm deep and squeeze it into a ball. If it does not crumble after being released, it means there is no lack of water; if it crumbles, it means water is lacking and you should water promptly. When watering, never use flood irrigation. Water less but more often, so that soil waterlogging does not cause root rot in the vegetables, especially in winter and spring. Watering should follow weather changes. It is best to water on sunny days, and the watering time should be in the morning, not later than 11 o'clock, so that the midday sun can evaporate some of the water.
3. Watering Precautions
Pay attention to the timing of watering. The reason for choosing morning watering on sunny days is that the ground temperature and water temperature are close at this time, so the roots adapt quickly after watering. Watering in the afternoon will cause a sudden change in ground temperature and affect the physiological functions of the roots, while watering in the afternoon, evening or on rainy and snowy days is not advisable. Pay attention to the amount of water. Flood irrigation will rapidly lower the ground temperature, cause nutrient loss, affect the roots' absorption of fertilizer, and affect the normal growth and development of the plants. After watering in winter and spring, restore the ground temperature as soon as possible, close the greenhouse promptly, and raise the indoor temperature. After the ground temperature recovers, ventilate promptly to remove moisture, bringing the temperature and humidity down to an appropriate range.
The above is an introduction to how to water vegetables in a greenhouse. We hope it helps you. For more related knowledge, please stay tuned to us.