Many people can't tell the difference between lettuce and lettuce. In fact, lettuce is lettuce, but lettuce is not only lettuce. Lettuce is a very good crop. His stems can be directly fried and eaten. It can also be cold-mixed and nutritious. In addition to the stems, the leaves can also be eaten, also known as lettuce, which is very popular with people.
If you want to grow lettuce, the most important thing is to apply fertilizer. You must first understand some applications of fertilizer. For example, what kind of fertilizer should be used. When will fertilization be better? Let's share it with you.
First, the characteristics
During the whole growth process of lettuce, more than ten elements are needed, among which the most needed ones are nitrogen, phosphorus and potassium. Among them, the demand for potassium is the largest, and there are statistics. For every 1000 kg of lettuce produced, the potassium is about 4.5 kg.
At the earliest time, because the seedlings were not very large, there were not many requirements for fertilizers, and as he grew older, the demand for fertilizers would increase.
Especially in the case of the ball, the lettuce will enter the balling period after about 70 days of sowing. During this time, the demand for nutrients is the largest, and the requirement for nitrogen accounts for the total amount of nitrogen in the whole process. More than 80%.
In addition, the soil to be selected should also pay attention to, the lettuce prefers the acidic soil, probably about ph value of about six, of course, too acidic, it is not good, or soil in neutral state can also.
Second, leaf use
The leaves of lettuce can be eaten. If you want to make its leaves grow better, you must pay special attention to fertilization. For example, if you use base fertilizer, pay attention to using some organic fertilizer. The organic fertilizer used in each mu is probably 5000 kilograms, in addition, with some compound fertilizer, and plough together with the soil. If it is planted in the spring, it can be planted on the flat ground. If it is summer, remember to plant it.
In addition to this, there is still a rear dressing, the amount does not need too much, remember to use it a few times, the first time after the planting, in addition, when the leaves grow fast, not 20 days before harvesting Use nitrogen fertilizer again, or it will affect its taste.
Third, the stem
In addition to the leaves, the stem below can also be eaten. In terms of base fertilizer, there is not much difference between them. Appropriate ones can add more calcium fertilizer. Then there is the period of topdressing. When the new leaves are grown after the slow seedlings, the first top dressing is carried out, followed by the top dressing of the rosette leaves and the rapid growth of the stems.
In the process of growing lettuce, fertilization is very important, especially top dressing. The growth of stems and leaves is different and different, so special attention is needed when fertilizing.
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