One and four pouring
1. Lightly watering seedlings. In greenhouses, the water requirement for seedlings after seedling is not large, and it is required to be relatively moist and loose soil, but it must not be too dry to affect seedlings. To this end, the watering of the seedlings should be lightly watered once every 7 days after planting, and cultivating and warming should be carried out in time.
2. Small watering of flowering water. In greenhouses, the beginning of flowering of tomato grows stronger and it enters the period of reproductive growth. At this time, we must keep the soil moist to meet the needs of flowering. To do this, we must pour water 1 times depending on the extent of soil drought. Excessive amounts of water can lead to leggy leaves.
3. Water enough to remind fruit water. When the first fruit of the greenhouse grows to a diameter of about 1 cm, it begins to enter a period of prosperous growth, especially after the 2,4-D water requirement. The water should be poured once to promote the fruit enlargement, so as to avoid the occurrence of stale fruit. .
4. Often poured fruit water. In the greenhouse, the tomato grows from the first ear to the size of the egg. When the second ear grows to 1 cm in diameter, the water requirement is greater. At this time, watering is often required to keep the soil moist. Generally, it takes 3-5 days to pour water once. To prevent the appearance of empty fruit or malformed fruit.
Two or four do not pour
1. Do not pour low-temperature water. When the greenhouse tomato is planted, it is in early spring. If the water temperature is too low, the ground temperature will drop sharply, and at the same time it will affect the rise of temperature, which may cause cold roots and roots of the plants, affecting the seedlings. Therefore, it is not suitable to pour pond water, especially water with ice.
2. Cloudy water. The low temperature of cloudy weather should not be watered, otherwise it will not only affect the temperature rise, but also cause the increase of air humidity in the shed to cause diseases such as early blight and late blight.
3. Do not water in the evening. Tomatoes should not be watered in the evening, especially after the results, otherwise it will not only cause excessive humidity in the greenhouse, but also lead to serious diseases such as gray mold and other diseases.
4. Not flooding irrigation. Flood irrigation not only causes a sharp drop in ground temperature, but also may cause fruit cracking in tomatoes, and may also cause soil compaction, affecting root respiration and plant growth.
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