Technical points of cultivating vegetable seedlings

First of all, it is necessary to strengthen low-temperature exercise. In particular, it is necessary to control the lower night temperature and maintain a certain temperature difference between day and night. 7 to 10 days before planting, it is necessary to strengthen low temperature training, control temperature and water, and improve the adaptability of seedlings to low temperature.

Secondly, it is necessary to increase the light time and light intensity of seedlings, and enhance the photosynthesis of seedlings. It can properly uncover the inner covering such as grass curtain and sunshade net, keep the outer covering such as film and glass clean, and spray photosynthetic nutrient film fertilizer. it can help plants absorb a large amount of light fertilizer, light energy, light, compatible with conventional fertilizers and nutrients to the limit of plant growth and development. One application is beneficial for the whole year.

Finally, the humidity of the seedbed should be controlled. The humidity in the seedling bed is high, the water content in the seedling body is more, the cell sap concentration decreases, and the seedling is easy to be frozen. It is necessary to strengthen ventilation and reduce the humidity of the seedbed. When the humidity of the bed soil is too high, you can spread a layer of dry fine soil or plant ash to absorb moisture, with a thickness of about 0.5 cm. Do not touch the leaf surface and seedling growth point when sprinkling dry fine soil or plant ash, and carry out when the seedling leaves are dry.