Lettuce is a vegetable that is very appetizing. Many people love it. Lettuce and lettuce are always a lot of people to be confused. In fact, the two should be the same vegetables, but some areas may describe differences. There are cultivated lettuce in the north and south of China. What are the requirements for lettuce cultivation? Today, Hui Nongwang Xiaobian mainly talks about four points for everyone.
First, the soil requirements
The roots of lettuce are not deep, so the demand for planting soil is rich in humus and well-drained plots, and the barren plots are impossible. Lettuce also has a large demand for oxygen, so the plot of lettuce must have good ventilation and ventilation. The pH can be neutral or acidic. The requirements for nitrogen and potassium in the growth of lettuce are also high.
Second, the temperature
Lettuce has a strong cold tolerance, and the temperature after sowing should not be lower than four degrees, and the optimum temperature from sixteen to nineteen degrees. After the emergence of lettuce, the daytime temperature is recommended to be controlled at about 18 degrees, and it is recommended to control it at 12 to 14 degrees in the evening.
Third, the light
Lettuce can be regarded as a long-day vegetable variety. Only sufficient light time can ensure the normal growth of lettuce, but this also needs to be determined according to the variety of lettuce. If the light is not enough, the growth rate of lettuce will be slower.
Fourth, moisture
Earlier we said that the roots of lettuce are shallow, so the absorption capacity is not strong, and the ability of lettuce to withstand drought and drought is not strong, this aspect of water management is particularly important. When the lettuce seedlings are kept, the soil is moist, that is, it is properly watered. After the germination period, the amount of precipitation can be appropriately reduced. The rhizome enlargement period of the lettuce and the ball-forming period need to keep the watering amount moist.
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