First, watering is reasonable, rooting and dehumidification.
In order to avoid water damage and increase the humidity in the shed, it is necessary to determine the amount of watering according to the soil moisture when watering, because the soil moisture content is less than 40%, which is not conducive to the absorption of nutrients, and when the water content exceeds 80% It is easy to cause soil permeability to deteriorate, and the roots are deficient in oxygen, causing roots. The watering should not be based on the growth of the plant, especially the blade angle, flexibility, flatness and the flexibility of the stem, to avoid excessive or insufficient watering.
In addition, when you water, you must also look at the growth environment of the plant, that is, the weather and ground temperature. In winter, it is not watered in rainy and snowy days, and watering is generally carried out on sunny days. Also pay attention to the ground temperature, watering at noon on sunny days is easy to fry, so it is often chosen in the morning, the ground temperature is maintained at about 15 °C, at this time the temperature difference between the ground temperature and the water temperature is small, the impact on the root system will be relatively weak.
The second is to timely fill light and promote the accumulation of photosynthetic products.
After entering the winter, there are more rainy days, insufficient light, and reduced photosynthetic products. It is easy to have various physiological diseases. Therefore, when the light is insufficient, the light transmission can be increased by wiping the shed film, and the reflective curtain (film), fill light, etc. can be set. Measures to increase the light intensity and extend the illumination time. The temperature in the shed is best controlled at around 25-30 °C during the day, and the night temperature is not lower than 15-17 °C to promote fruit enlargement and color change. The vegetable grower should pay attention to the fact that the reflective film should not hang over the entire back wall, so that the wall can not absorb and store enough heat, and the heat can not be cooled at night to maintain the temperature of the shed, resulting in low temperature at night and the growth of vegetables. Therefore, it is recommended to select a width of about 1-1.5 meters when hanging the reflective film on the rear wall, and select a suitable position according to the height of the plant.
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