Lettuce can also be called brocade, lettuce, endothelium, and green bamboo shoots. It is an annual or biennial herb that is cultivated throughout China. Common cultivars are lettuce, lettuce, and lettuce. Regular consumption of lettuce can stimulate the secretion of digestive enzymes, increase appetite, promote the body's intestinal wall peristalsis, prevent constipation, and then Xiaobian will simply talk about the requirements of the planting environment during the growth of lettuce.
1, temperature
Lettuce has a strong cold tolerance. When the temperature is kept at 16-19 degrees after sowing, the lettuce will germinate in about 7 days. When the temperature is higher than 30 degrees, the lettuce seeds will delay germination, and severe will not germinate.
After the lettuce is emerged, the daytime temperature should be controlled within 18 degrees, and the nighttime temperature should be controlled within the range of 12-14 degrees. If the temperature is too low, the lettuce will freeze. At the same time, it should be noted that different varieties of lettuce have different temperature requirements. Therefore, in the process of lettuce cultivation, planting should be carried out according to factors such as lettuce variety and weather conditions.
2, lighting
Lettuce has a large demand for light. Under the condition of sufficient light, lettuce has strong growth ability and fast growth, which is beneficial to increase the yield and quality of lettuce. Therefore, after sowing lettuce, there must be a certain amount of light, otherwise it may affect the germination of lettuce.
3, moisture
The roots of lettuce are shallow and the absorption capacity is poor, but the leaves are large and thin, and the demand for water is relatively large. In the actual planting process, the lettuce is not drought-tolerant and sturdy. Therefore, when planting lettuce, it is necessary to do a good job in water management. .
Appropriate watering in the lettuce seedling stage to keep the soil moist. After the lettuce enters the flowering stage, reduce the amount of watering to promote root growth and prevent excessive moisture damage.
During the expansion of the stem of the lettuce and the ball-forming period, the soil is kept moist, and the watering is controlled before harvesting, so that the water is excessively distributed and the stem is cracked.
4, soil nutrition
The root of lettuce is shallow, so there are certain requirements for the soil. When planting, choose the land with rich humus, soft and normal irrigation and drainage. At the same time, the soil should be well ventilated, the pH is neutral or acid.
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