To keep the ground temperature constant: a suitable ground temperature is the key to ensuring the normal growth of vegetable roots. Generally, the suitable temperature for the root growth of vegetables such as cucumber, eggplant, tomato and pepper is 20-22℃. At a temperature of 12°C, the physiological activities of vegetable roots are blocked; at a temperature of 8°C, vegetable roots basically stop growing; vegetables at a temperature below 5°C will freeze to death. Therefore, in the management of winter-grown protected vegetables, the ground temperature must be adjusted according to the types of vegetables. If the ground temperature is too low, the temperature in the shed must be increased, or the whole mulching film should be adopted.
Reasonable watering and fertilization: Irrational watering, excessive dryness or excessive humidity of the soil will have a great impact on vegetable roots. Especially when the ground temperature is high at noon, watering is most likely to cause damage to the capillary roots of vegetables. Therefore, the *** should be watered before 10:00 in the morning, the amount of water should not be too large, avoid flooding with flood, and pay special attention in severe winter. When the soil sees dry or wet, it is necessary to hoe in time to increase the air permeability of the soil and promote the growth and development of the root system. When fertilizing, you must be careful not to apply too much at one time, so as to avoid fattening the roots. In severe winter, pay attention not to apply fertilizers with too high nitrogen content to prevent volatilized ammonia from damaging vegetables.
Pay attention to the application of biological bacterial fertilizers: biological bacterial fertilizers have the effects of improving soil structure, enhancing soil fertility, inhibiting soil-borne diseases, and protecting roots. Therefore, vegetable farmers must pay attention to the application of biological fertilizer when topdressing. In addition, we must strictly prevent soil-borne diseases and underground pests.
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