Spring shed vegetables let go tube

Note that the temperature is controlled according to the requirements of different vegetables on the external environment in each growth period. For example, the suitable temperature for tomato seedlings during the day is 23 ℃ ~ 28 ℃, and the night temperature is 12 ℃ ~ 16 ℃; during the flowering period, the appropriate temperature is 20 ℃ ~ 23 ℃ during the day, 15 ℃ ~ 20 ℃ at night; 13 ° C ~ 17 ° C is suitable at night.

Controlling Humidity Vegetables in greenhouses require higher soil humidity and lower air humidity (generally 45% to 60%) during each growth period. Therefore, in addition to the mulch-covered cultivation method, we must also strengthen the moisturizing management.

Increased application of organic fertilizer focuses on increasing the application of organic fertilizer (not less than 3,000 kg per acre) to increase soil organic matter content and improve soil quality. Reasonable and balanced application of chemical fertilizers, especially to prevent the imbalance of the ratio of nitrogen, phosphorus, and potassium in the soil. When fertilizing, be sure to apply sufficient rotten organic fertilizer, pay attention to the reasonable combination of nitrogen, phosphorus, and potassium fertilizers, and promote balanced fertilization techniques.

To prevent the "cold spring cold" timely irrigation, the degree of freezing damage can be reduced; adding a layer of small arch shed in the shed, and surrounding grass outside the shed can increase the temperature in the shed 2 ℃ ~ 3 ℃.

Using plant growth regulators Plant growth regulators can strengthen the root system, reduce slow seedling time, and promote the growth of vegetable plants.

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