What is the reason why lettuce does not ball, and how to solve it?

As we all know, green leafy vegetables are nutritious and contain a lot of calcium, which is higher than milk. At the same time, the dietary fiber inside can also improve intestinal peristalsis. Therefore, green leafy vegetables are common on our dining table, and lettuce is also a common one. Many growers also like this dish, hoping to increase their income through it. Lettuce with meatballs has its own living habits. If the time is not enough or the growth conditions are not suitable, the phenomenon of late fruiting or even direct fruiting will occur, which greatly affects the economic interests of growers. Let's talk about the reasons and solutions of lettuce without balls to help you better prevent this phenomenon.

Causes and variety problems of lettuce not heading. According to the different growth time, head lettuce can be divided into three varieties: early, middle and late. If you choose a late-maturing variety, others choose an early-maturing variety, and other people's lettuce heads, it is normal for your lettuce not to head. Therefore, when planting, we should choose suitable varieties according to our local environment and market demand, and do a good job in usual management, so that we can see our lettuce heading. Improper use of fertilizer. In the management of lettuce, the use of fertilizer is very important. Only scientific and reasonable fertilization can maintain the nutritional balance of lettuce in all aspects. Because lettuce is leafy, and nitrogen fertilizer can make the stems and leaves grow more vigorously, but nitrogen fertilizer should not be used excessively. If too much nitrogen fertilizer is used and phosphorus and potassium fertilizer are ignored, although too many leaves are grown, they are not very fat, and there will be no obvious connection between leaves, so the trend of heading at heading stage is not obvious.

The light is insufficient. Lettuce with a ball likes cold climate. If it is planted in the open air, it is usually planted in spring, autumn and winter. Nevertheless, lettuce is a plant with long sunshine time and must absorb more light during its growth. If there is not enough light, the leaves will be loose, the balls will be poor, or even there will be no balls. For example, lettuce is planted under a big tree, because the big tree blocks the light, and the lettuce can't absorb enough light. If planted in such an environment, the leaves of vegetables will become thinner and less likely to gather, and lettuce will naturally be poor. The temperature is too high. Lettuce likes cold climate and has strong cold tolerance. But if the ambient temperature is too high, it is not conducive to its growth. The best temperature for the growth of leaf bulbs is between 65438 03 degrees and 65438 06 degrees. If it exceeds this temperature, it is not good for the head. Therefore, it is necessary to control the planting time and take certain measures to cool down when encountering high temperature.

Pests and Diseases During the growth of lettuce, some pests and diseases may be encountered, such as ground tigers, crickets and other pests. They will chew the leaves of lettuce, the leaves will be damaged, and the difficulty of heading will naturally increase. If lettuce is infected with damping off, soft rot, etc. It will also be damaged in its growth because of these diseases, or it will stop growing directly, so it is impossible to grow.