How to prevent vegetable deformity seedlings
In the process of growing vegetables, abnormal growth is often caused due to weather and improper management. The main symptoms and prevention measures are as follows.
Long seedlings. Symptoms are thin stems, long internodes, thin leaves, and pale color, which are mainly caused by high temperatures and high humidity. Control methods: First, according to the requirements of temperature and humidity seedlings, timely ventilation, especially at night, the temperature should be appropriately lower; Second, we must ensure that the transparent cover clean, try to increase the light intensity and light time; third is to prevent seedlings are too crowded To ensure adequate supply of nutrients for seedlings.
Aging seedlings. Symptoms are small seedlings and short stems. It is not easy to regenerate new roots when the roots are aging, and the leaves are small and thick. The cause is seedling age or seedling time is too long. Preventive measures: In the management of nursery, we must strictly control the seedling age, and the seedlings should preferably adopt the method of controlling the temperature without controlling the water.
Root seedlings. Symptoms are that the roots do not produce or rarely find new roots, and the root bark becomes brown and gradually rots. Control methods: First, choose a loam with good air permeability as seedbed, and second, use geothermal lines to raise seedlings. Seedbed temperature is maintained at 20-25°C during the day and 15°C at night.
Wear hat seedlings. The symptom is that after the seedlings are unearthed, the seed coats clamp the cotyledons without falling off, making the cotyledons difficult to open. Prevention methods: First, pouring water before sowing, after sowing, the thickness of the cover should be appropriate; second is to timely cover plastic film or straw curtain insulation.
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