Planting greenhouse vegetables has the experience that after the greenhouse vegetables are poured in the winter, the fine roots of the white flowers under the original local film are gone, and the young leaves near the growth on the ground gradually turn yellow, causing difficulty in slowing down the seedlings and reducing the yield. In fact, this is caused by the big water damage, so what issues should be paid attention to in winter watering? Let's take a look at the following.
First, why is there a big water damage in winter?
The main cause of water damage is clay soil, and sandy soil is easier. It is common when the temperature is low in the deep winter, and it is lighter when the temperature is high. Watering has occurred for a long time, and it is lighter when watering is less. Therefore, in the low temperature stage of winter, the greenhouse vegetables must pay attention to the amount of watering, excessive watering or low water temperature, which can easily lead to water damage.
The roots of dryland vegetables need good soil permeability, and the soil moisture is likely to cause root injury when the soil moisture content is large. Too much water, the water squeezes the air out of the soil, causing the capillary roots to be hypoxic and unable to breathe, causing the accumulation of harmful substances, causing the vegetable to succumb to death and causing dead roots.
Second, how to avoid the occurrence of root damage in winter watering?
1. Increase the water temperature, build a pool in the shed, preheat the water, and drip irrigation is best;
2, choose continuous sunny watering, watering as much as possible to increase the shed temperature by 3 ° C, in order to facilitate the restoration of ground temperature;
3, control the amount of watering, watering can be interlaced, you can end up, try to control the amount of water to be about 10-15 tons per mu.
3. How to manage winter vegetables after they are injured?
Timely supplementing the plants with nutrients, improving the root growth environment and promoting root development are important means. The problem caused by watering the poorly permeable block is very serious. If the well water with low temperature enters the soil, it will cause the capillary root soil to die, which will cause the roots to decrease the absorption of iron, zinc and other elements. When the soil lacks nutrients, In turn, there will be symptoms of deficiency, such as yellowing of the heart. For these phenomena, we can use the ground to slash, which is an important way to solve the problem of water damage. It can effectively improve soil permeability and help to alleviate the damage caused by water damage.
Or we can spray the plant growth regulators such as alizarin to help restore the roots, and can be mixed together in the zinc-containing iron leaf fertilizer. After the land has become slightly dry, rooting agents such as chitin rooting agents can also be used, but the time is not too early, otherwise it will continue to increase the moisture in the soil, making the roots more suffocating, the leaves are more yellow, and the vegetables are more difficult. restore.
The above is the reason and remedy for the winter roots of vegetable water. In order to ensure that the growers get big benefits, everyone must do a good job of management measures after the injury.
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