In the process of planting greenhouse vegetables, we can often see the phenomenon that vegetables will produce abnormal seedlings, which is also caused by various improper management or environmental conditions in production. According to different reasons, the deformed seedlings caused by greenhouse vegetables are also divided into many types. The following small series will explain the types of malformed vegetable seedlings in greenhouses and their control measures.
First, wearing a cap seedling: wearing a cap seedling is a vegetable seedling after the unearthed, because the photosynthesis is blocked, causing growth and development, resulting in the embryo leaves difficult to open the vegetable seedlings.
Prevention
1. Apply organic fertilizer and pour the bottom water, and cover the soil properly after sowing.
2. Cover the insulation film and straw curtain in time to ensure the stability of the temperature.
Second, the roots of the seedlings: the roots of the roots of the vegetables are not roots or rarely new roots or adventitious roots, the root bark slowly brown rot, eventually causing the whole plant to wilting.
Prevention
1. The seedbed should be well ventilated and maintain the proper temperature of the seedbed.
2. Appropriately reduce the humidity in the greenhouse.
3, pay attention to increase the light, apply enough farmyard fertilizer.
Third, the long seedlings: vegetables long seedlings are very common caused by high temperature and high humidity, the symptoms are plant stems and slender stems, thin leaves and light color.
Control method
1, timely ventilation, night temperature can be appropriately reduced.
2. Ensure the cleanness of the transparent cover and increase the light intensity as much as possible.
3, to prevent seedlings from being overcrowded, to ensure adequate nutrient supply of seedlings.
4. Aging seedlings: The symptoms of vegetable aging seedlings are short stems and small roots, and the roots are aging seriously, and the leaves are small and thick. The reason for the occurrence of vegetable aging seedlings is that the vegetable seedlings take too long.
Precaution
1. In the management of nursery, we must strictly control the age of the seedlings.
2, seedlings are best to take the method of temperature control and water control.
The types of malformed seedlings produced in greenhouses are probably the same as those mentioned above. The reasons for their occurrence and the prevention and control measures for the types are explained in a clear way. I hope everyone can see that they can gain something.
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