What is the reason why lettuce doesn t ball? How to solve it?

The variety of vegetables, the weight of the seeds, the time of watering, the time of light, and the same degree of fertility will all have an effect; If you want to solve this problem, you can water regularly, fertilize regularly, choose the right soil, choose the right land, and choose the right seeds.

If there is insufficient light and moisture in the production process, the lettuce will not ball, so in the process of planting, we must pay attention to field management.

Single fertilization results in no balling, partial application of nitrogen fertilizer, lack of phosphorus and potassium fertilizer, or lack of trace element fertilizer. If the temperature is too high, the temperature of growing bulbs should not exceed 25 degrees, which is easy to cause damage. The bulking stage requires a lot of water, and insufficient watering is also a reason.

The effects of pests and diseases are generally easy to see.

Lettuce has its own growth habits, and it takes a certain amount of time to grow, if the time is not up or the growth conditions are not suitable, it will lead to no balling and late balling.

First, the reason for the variety.

If you choose a late-maturing variety, someone grows an early-maturing variety, and someone else starts to bulb, but yours doesn't, it's normal.

Solution: Do a good job in field management, pay attention to fertilization and watering, reasonable combination of nitrogen, phosphorus and potassium fertilizers, do not water too much, let the soil be slightly moistened, and let the lettuce that is ready to enter the balling period grow strong and vigorous.

Second, too much nitrogen fertilizer.

Bulb lettuce is a leafy vegetable, and nitrogen fertilizer can promote the growth of stems and leaves and grow more leaves; However, too much nitrogen fertilizer is applied, less phosphorus and potassium fertilizer, and the long vegetable leaves are more, but not fat enough, and the vegetable leaves are not obvious enough to move closer to the middle, and the balling trend is not obvious when it reaches the balling stage.

Solution: There is no rosette period before balling, the growth of lettuce also needs a certain amount of phosphorus and potassium fertilizer to make the stems and leaves grow thicker, and more is needed after balling. Look at the severity of loose leaves of lettuce to determine the amount of fertilizer, apply less nitrogen fertilizer, and strengthen the application of potassium fertilizer and phosphorus fertilizer; Fertilization depends on the situation, only the roots or the roots and foliage are fertilized, and the improvement is more obvious.

Third, the place where it grows is blocked too much.

Open-air planting of lettuce is generally in spring, autumn and winter, although the growth likes cold and cool climate, but it is a long-day plant, the growth needs more light, the light is insufficient, the long leaves are loose, and the ball is poor or even not balling; The occurrence of this situation is generally to plant the lettuce to the land with too many obstructions such as big trees, and the lettuce grows with less light on weekdays, and the leaves are relatively weak, thin, and difficult to gather, and it is not good to ball.

Solution: 1. Reduce occlusions.

Blocking cut off branches that are not necessary, because shading will not only affect the growth of bulb lettuce, but also affect the growth of other vegetables in the field; If it is other debris such as straw and branches, it should also be cleaned up, and not piled up so high.

2. Tie the leaves appropriately.

If the balling is too poor and the cabbage leaves are not well gathered, you can manually assist in balling, that is, tying the leaves, similar to how we usually tie the leaves of those Chinese cabbages; When tying the leaves, pay attention to choosing a good rope (it is recommended to use straw as well), gently wrap around the back of the leaves and tie them up, not loose or tight, and do not knock the leaves.

Summary: There is more than one reason why lettuce does not ball, including variety, temperature, soil, etc., which can be solved by optimizing early-maturing varieties, sunscreen, loosening soil, and applying rotting poultry manure.

The reason why lettuce doesn't set balls is because there is a problem with the seeds In terms of buying seeds, buy more of the ** ones.

The reason why this kind of raw ball lettuce does not catch the ball is also because her nutrition can't keep up, and the growth is too loose and too small, so she should apply more potassium fertilizer.

Generally speaking, there are several reasons for heartburn, wrong fertilization is easy to burn, poor ventilation is easy to burn, soil calcium is easy to burn, and then there is disease.

It is very likely that there is a problem with the variety, there is not enough fertilizer, there is a lack of water, and there is also an effect of insect infestation, so it is necessary to investigate from many aspects.

It may be because there is no nutrient, and the plant does not absorb enough nutrients, and the use of fertilizer is not enough, so it will not ball.

It should be due to the lack of fertilizer, and there may be no nutrients when growing, so it will not ball.

Top dressing is to add 40 kg of compound fertilizer after planting, and slow the seedlings for about two to three weeks. After planting for a month, the compound fertilizer is still 30 catties or 20 catties, and then there is no need to fertilize. Lettuce prefers a cool climate, so it is best to plant it in spring or autumn and plant it at the end of spring, do not let the nodulation period occur in the summer, and do not plant it in midsummer, otherwise it is easy to fail to nodle and rot easily in case of rain.

Maintain moisture balance and keep it moist with a humidity of 65%. You can drink plenty of water at the right time. After setting the ball, control the water.

Too much water is perishable. Protected land planting is more likely to cause disease, but the incidence of open field disease is unknown, which often affects nodules, soft rot, virus diseases, and top burns. Aphids and whiteflies are pests that affect nodulation.

Seeds, soil disinfection, drying. Spray in time to control transmission.

Lettuce likes cold climate, suitable for growth temperature 15-20, suitable for the environment with large temperature difference between day and night and low temperature at night. The optimal temperature for nodulation is 10-16, and more than 25 is not only not conducive to nodulation, but also leads to necrosis or decay of the heart lobes due to excessive temperature. Some vegetable farmers are worried that watering will affect ground temperature and yields, so most of them do not water enough.

The water requirement of lettuce is highest during the peak growth period, so the soil should be kept moist, especially before and before heading. After the leaf bulb is formed, control the watering to prevent too much water, which can cause the bulb to crack and heart rot. Ignoring the application of basal fertilizer or using only nitrogen fertilizer instead of calcium and potassium fertilizer in the later stage will make the lettuce not bear fruit.

In the process of growing lettuce, we must pay attention to phosphate, potassium, and calcium fertilizers. If these fertilizers are not used properly, it will be difficult to form balls.

Lettuce needs a lot of water when it is knotted, but some farmers do not water it at this time, which will inevitably lead to a lack of moisture. Finally, lettuce is difficult to knot, especially when the lettuce is knotted and about to be knotted, and the water demand at this time is particularly large. However, when lettuce is bulbous, the water content should be controlled.

If the water content is too large, it will cause its heart to rot and crack the bulb. Before sowing, the seeds of lettuce should be soaked in water for a few minutes, then wrapped in a damp cloth and germinated at around 18. Usually the seeds will germinate in two or three days.

After the lettuce emerges, the straw covering it should be removed, and the harm caused by high temperature should be paid attention to when raising seedlings in summer. The seedling stage should be watered in the morning and evening. Generally speaking, seedlings can be divided after half a month of sowing.

For example, the short seedlings are removed, and the lettuce seedlings are about a month.

1.Breed reason. If you choose half-balling or loose-leaf lettuce varieties, the balling will be poor, or even no balling.

2.Insufficient fertilizer. Insufficient fertilizers, especially phosphorus, potassium and calcium fertilizers, can easily cause difficulty in balling.

Generally, one acre of lettuce is planted, and 5000 kg of high-quality rotted organic fertilizer and 30-50 kg of compound fertilizer should be used for base fertilizer; In addition, attention should also be paid to appropriate top dressing, generally 15-20 days after planting per mu of compound fertilizer 15-20 kg, to 30 days after each mu should be topdressed 15 kg of compound fertilizer or 10 kg of high nitrogen and high potassium fertilizer. 3.Improper temperature management.

Bulb lettuce likes a cold climate, with a suitable growth temperature of 15-20%, which is suitable for an environment with a large temperature difference between day and night and a low temperature at night. The appropriate temperature for bulb formation is 10-16%, and the temperature exceeds 25, which is not only not conducive to ball formation, but also causes necrosis or decay of the heart lobe due to high temperature.

Choose the wrong variety, now the varieties of lettuce are innumerable, according to the color classification are a lot, most of them are scattered leaf lettuce, many people choose the wrong variety when choosing the strain that does not catch the ball, resulting in lettuce not catching the ball. Improper fertilization: improper operation when fertilizing ball lettuce, wrong fertilizer, and poor fertilization time will lead to lettuce not being able to form a ball.

This is most likely due to the lack of light time, which makes the leaves of the lettuce bulb loose and unable to set the ball.

Bacterial diseases-: It can be controlled by amino allicin, copper succinate fertilizer, copper hydroxide, basic copper sulfate, chunleimycin, etc. Bacterial soft rot can be controlled with 3,000, Garinone, or Zhongshengmycin, thiazole coarse edge zinc, allicin, chlorbromoisocyanuric acid.

Beware of bacterial soft rot disease. 10% mesomycin 1000 times can be used. 3% thiamydone 750 times solution.

77% copper hydroxide 800 times solution. 20% thiazine zinc 750 times solution, quinoline copper late, spring thunder king copper. Alternate medications.

Bacterial diseases are controlled with mesobiocycin, leaf azolethia, and Denier copper. Considering bacterial soft rot, you can use Zhongshengmycin, allicin, copper romine and other agents for control, and it is recommended not to plant again. Stubble is key.

Since the temperature is relatively low during cultivation, the hypertrophy of rosette leaves and the differentiation of the number of leaves are inhibited. As a result, the heart lobes are erect and do not enter the bulb stage. Generally, late-maturing varieties are prone to non-balling, while early-maturing varieties are less non-balling.

Some farmers use fertilizer improperly when planting lettuce, for example, some people ignore the application of base fertilizer when ploughing the ground, or only use nitrogen fertilizer in the later stage, instead of calcium and potassium fertilizer, etc., these factors will make lettuce not ball. Now there are countless varieties of lettuce according to the color classification, most of them are scattered leaf lettuce, many people choose the wrong variety when choosing the strain that does not catch the ball, resulting in lettuce not catching the ball.

<> usually do a good job in field management, pay attention to fertilization and watering, reasonable combination of nitrogen fertilizer, phosphorus and potassium fertilizer, do not water too much, let the soil be slightly moist, so that the lettuce that is ready to enter the balling period grows strong and vigorous. In addition to the application of foot fertilizer, in the growth of lettuce should be timely topdressing according to the growth of lettuce, in order to prevent lettuce from not wrapping, in the lettuce wrapping period can be sprayed with calcium foliar fertilizer to promote lettuce wrapping.

There is no need to cut off the branches left behind, because shading will not only affect the growth of the lettuce, but also the growth of other vegetables in the field; If it is other debris such as straw and branches, it should also be cleaned up, and not piled up so high. The seeds of lettuce can germinate at more than 10 degrees, and the best germination temperature is 18 degrees, and they can germinate from the soil in 3 to 4 days. When the temperature rises above 30 degrees, germination is hindered.

The growth period is about 60-80 days.

Bulking temperature:The optimal temperature is 13 17 and 21 or above, and it is not easy to form leaf balls, or the internal temperature of leaf balls is too high, which causes necrosis and rot of heart leaves; Generally, the temperature should be about 20 during the day, and it is best to keep 12 15 at night, and the soil should be kept moist before the emergence of seedlings after sowing, and the grass curtain can be removed from the budding 2-3 days after sowing, and the grass curtain is not timely and easy to produce tall seedlings. After the seedlings emerge, they are watered once a day in the morning and evening.

Seedlings are thinned about two weeks after sowing, weak seedlings and tall seedlings are removed, and robust seedlings are retained.

The reason why the lettuce does not bulb is the variety, the lettuce is divided into three varieties in the morning, middle and evening, if your lettuce is a late variety, then the early variety has already produced lettuce, and the late-maturing lettuce will be a little later. Secondly, there may be improper use of fertilizer, the nutritional imbalance of lettuce, resulting in the inability to ball, and the lack of light. The solution to the problem of not counting balls of lettuce is to use fertilizer reasonably and choose early-maturing varieties.

The reason why lettuce does not ball is the variety problem. Depending on the growth time, the lettuce is divided into three varieties: early, medium and late ripening, if you choose a late-maturing variety and someone else chooses an early-maturing variety, so when someone else's lettuce is clumping.