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Leaves are divided into cotyledons, basal leaves, seedling leaves, rosette leaves, bulbous leaves, and stem leaves. From the first pair of true leaves, that is, basal leaves, to the seedling stage, and then to the rosette stage, the leaves begin to hug inward, and after the bulb stage, the leaves bend inward in the middle ribs to coat the apical bud to form a bulbous leaf. The reason is that there are too many leaves during the seedling period, and a certain growth progress has been reached prematurely, and the second is that it has experienced the influence of low temperature, so the cabbage planted in spring has not passed the vernalization stage, and has directly entered the development stage.
<> cabbage needs fertilizer the most, and if the material is insufficient, it will be scattered, and the package is not tight, and there is no way to remedy it. There is also a late planting season will not be tight, but nothing, can be used to feed chickens, ducks and geese! I don't want to buy it because it's too late!
Its growth characteristic is that the outer leaves will eventually wrap up layer by layer and form a ball. However, in recent years, many farmers often encounter the situation that cabbage does not wrap and does not ballen in the process of planting, which has caused great economic losses to farmers.
Then it will be difficult to get a ball. And its outer leaves are damaged, mainly because of the appearance of some diseases and pests, eating some of the outer leaves of cabbage, and it may be because of the vigorous growth of cabbage, and the loss of a lot of nutrients, so that it can not give cabbage growth, the second reason is that when planting cabbage, the temperature of the weather, and the time of light, and some nutrients are not sufficient. If the temperature is too high and the light is too long, the balling of cabbage will be severely hindered.
Then it will be difficult to get a ball. And its outer leaves are damaged, mainly because of the appearance of some diseases and pests, eating some of the outer leaves of cabbage, and it may be because of the vigorous growth of cabbage, and the loss of a lot of nutrients, so that it can not give cabbage growth
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If the cabbage does not intercept or is loose, it must be due to the popularity of moisture and sunlight, and has not reached a strict control, so water absorption and light time should be controlled in daily life.
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The first point is that it is very important to pay attention to regular grafting, the second point should be watered in time to achieve very good results, and the third point should be regularly renovated the soil.
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1) Select suitable varieties and seeds, and select suitable (early-maturing) varieties according to the planting season and cutting and cultivation methods. Choose high-quality seeds with a high germination rate and full kernels. (2) Strengthen the management of seedlings, sow seeds at the appropriate time, and cultivate strong seedlings at the appropriate age.
3) Strengthen the management after planting, and plant seedlings by watering enough planting water once according to the cultivation season, or planting seedlings by sitting on seedlings in dark water and then watering seedlings slowly. After planting cabbage seedlings in the reserve, it is 20-25 degrees during the day and 15 degrees at night to promote slow seedlings. After slowing the seedlings, it is necessary to control the water and squat the seedlings for 10-15 days, during which it is found that the leaves of the plant are wilted and the leaf color is dark green at 10 o'clock in the morning, and the appropriate amount of water can be watered 1 time, and the soil is loosened 3-4 times in a timely manner to promote the development of roots and rosette leaves, and prevent growth.
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Kale is a common vegetable in our lives and has a high nutritional value and is grown by many farmers. However, in the process of planting cabbage, especially after the plant enters the heading stage, it is easy to have no heading or loose heading. What causes it?
How can it be prevented? What precautions are in place?
The reason why kale does not set the balls.
1) Variety problem: The seed variety of cabbage is not pure, or the cultivation season is not suitable.
2) Poor temperature, water and fertilizer conditions in the protected area: The temperature of the protected land exceeds 25 degrees, and the sunshine hours exceed 14 hours, and the water and fertilizer conditions are poor.
3) More loss of rosette leaves: For example, more than 60% of the plant's outer leaves (rosette leaves) are lost due to overgrowth or pests and diseases, resulting in a decrease in rosette leaf nutrition** and abnormal development of bulb leaves due to lack of nutrients. When too many rosette leaves are lost, part of the bulb leaves grow outward and open.
4) Pests and diseases: Serious pests and diseases in the field are in danger and damage to rosette leaves, etc., which are easy to cause no heading or loose heading.
Precautionary measures. 1) Choose the right variety and seeds.
According to the planting season and cuttings cultivation method, suitable early-maturing varieties are screened. Select high-quality seeds with high germination rate and full seeds.
2) Strengthen seedling management.
Sow seeds at the right time to cultivate strong seedlings of the right age.
3) Strengthen post-planting management.
Depending on the cultivation season, you should water enough planting water at one time, or plant in dark water first, and then water slowly. The results showed that 20-25 days and 15 nights promoted the slow growth of seedlings. 10-15 days after slow seedling, the water should be controlled.
During this period, if the leaves of the plant wilt at 10 a.m. and are dark green, they should be watered once and loosened 3-4 times at the right time to promote rooting and rosette leaf development and prevent overgrowth.
When the leaves are obviously covered with wax powder and the heart leaves begin to close, end the squatting seedlings and water, after 4-6 days, water again, and then water every 7-10 days, pay attention to ventilation and moisture drainage after watering. Generally 15-20 degrees during the day and 10 degrees at night. Stop watering 7 days before harvesting.
4) Timely top dressing.
After slow seedlings (entering the rosette stage) and squatting seedlings (entering the heading stage), combined with watering and top dressing.
5) Pest control.
Pay attention to the control of cabbage diseases and pests, protect rosette leaves, and improve the quality of cabbage.
6) Harvest at the right time.
40-50 days after cabbage wrapping, 70-80% of the bulb leaves can be harvested continuously.
Precautions. 1) The relationship between the number of rosette leaves and the developmental stage.
The number of true leaves from the second to the third leaf ring of cabbage is about 16 24 pieces, and the heading stage is 25 to 35 days. The heading period is from the beginning of heading to the end of bulb harvest, with 25-35 days for early-maturing varieties and 40-50 days for late-maturing varieties. The number of rosette leaves did not increase during this period.
2) The number of leaves per plant is related to the variety.
There are about 18 early-maturing varieties, 20-30 medium-maturing varieties, and more than 30 late-maturing varieties.
The above are the reasons, precautions and precautions for cabbage not balling and heading. When the cabbage enters the heading stage, the farmer should prevent this phenomenon. Once the cabbage is not harvested or loosened, it will reduce the marketability of the cabbage and affect its sales, so it must be paid attention to.
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Summary. Hello dear, cabbage grows very well but does not set balls and applies sufficient base fertilizer, and topdressing many times. Pay attention to the combined application of nitrogen, phosphorus and potassium fertilizers, and also pay attention to the application amount of trace elements such as calcium and boron.
Excessive rain and insufficient sunlight in the middle and late stages of cabbage growth; or the temperature is too low, which affects the growth and development of cabbage, and will cause no balling or loose balling. This phenomenon can also occur during the growing season when there are many rainy days and high temperatures.
What should I do if the cabbage grows well but doesn't set balls?
Hello dear, cabbage grows very well but does not set balls and applies sufficient base fertilizer, and topdressing many times. Pay attention to the combined application of nitrogen, phosphorus, denier and potassium fertilizers, and also pay attention to the application amount of trace elements such as calcium and boron. Excessive rain and insufficient sunlight in the middle and late stages of cabbage growth; or the temperature is too low, which affects the growth and development of cabbage, and will cause no balling or loose balling.
This phenomenon can also occur during the growing season when there are many rainy days and high temperature in the inflatable mold.
Hello dear, insufficient fertilizer and water during the growth period of cabbage, or too much water in the soil, poor soil aeration, may not bulb loosely. In the seedling stage, the seedlings grow long or the seedlings are over-controlled, and the aging seedlings are formed, which will also lead to the formation of balls. The mixing of cultivars leads to false balls.
It is very easy to hybridize between cabbage and its variants, and no effective isolation measures are taken in the breeding and burial of the species, which is easy to produce hybrids, and the plant bends and plants grown into hybrids generally do not form balls.
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We want to make good use of food to regulate the body, fully absorb the nutrients of food, we need to learn the practice of this food, but the premise is that we choose high-quality food, such as cabbage, it is very necessary for us to buy fresh cabbage.
1. Look at the appearance. When we buy cabbage, we must choose a good-looking one, that is, one with a smooth surface, no scars and no wormholes, and no traces of chemical fertilizer.
2. Look at the color. The color of fresh cabbage is very bright green, and our common cabbage is mostly green and white mixed with sails, and those who like to eat young leaves can pick more green parts; Those who like to eat vegetables can choose the white part more.
3. Weigh the weight. For vegetables like cabbage, it's best to choose a heavier one, which means that it has plenty of moisture and is fresh enough.
4. Look at the roots. When we choose kale, we still have to pay attention to the white part of the bottom of the kale, which must be clean and firm.
5. Look at the hardness. Fresh cabbage is hard because it is generous, and if it looks like it is soft and fluffy, it means that there is no moisture.
When we consume Brussels sprouts, we should pay attention to the following:
1. Brussels sprouts + cucumbers: affect the absorption of vitamin C.
2. Brussels sprouts + fungus: strengthen the stomach and brain, strengthen the body.
3. Brussels sprouts + carrots: affect the production of cancer cells.
4. **Patients with itching diseases and eye congestion should avoid eating Brussels sprouts.
After reading the above introduction, I believe that everyone is now how to choose cabbage from celery, we only have to pick fresh cabbage, so that when we eat, the efficacy and nutrition will be maximized, and eating food also needs to pay good attention to the taboos of food, otherwise it will not only affect the effect of our consumption, but also have an adverse impact on the body.
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Nitrogen deficiency grows slowly, the leaf color fades gray, dull, the leaf shape is narrow and straight, and the bulb is not tight or difficult to wrap the core. Phosphorus-deficient leaves are hard and hard, the veins and margins are purple-red, and bulbs are infrequently. The lobes in the potassium deficient leaf area are reduced, the core is not tight, the ball is small and loose, and the heart cannot be closed in severe cases.
The edges of the leaves turn yellow or appear yellowish-white spots, and plant growth deteriorates significantly. The margins of the inner leaves that are deficient in calcium are brown and dry together with the new leaves, and in severe cases, the margins of the non-bulbs are brown and wrinkled.
The green color between the veins of young leaves with iron deficiency changes from light yellow to yellowish-white, and the small reticular veins remain green, and the veins also turn yellow when iron deficiency is severe. Boron lacks fleshy stem heart browning, cracking, and empty space. Nitrogen is an important nutrient necessary for the growth and development of vegetables, which has a lot to do with the yield and quality of vegetables.
Therefore, the application of nitrogen in vegetables is a very important technical part of vegetable production, and it is also a major cost input. Insufficient nitrogen fertilizer or excessive application of nitrogen fertilizer has a negative effect on the growth and development of vegetables, resulting in a decline in vegetable yield, poor quality, which is conducive to the economic interests of vegetable farmers.
The symptoms that appear are from the lower paddle blades and develop upwards. When nitrogen deficiency is severe, the whole plant turns yellow, the yellow leaves are easy to fall off, the young leaves stop growing, and the axillary buds shrank or wilt. In particular, the ambition of the wild vegetable that knots the ball is delayed or simply unscrupulous.
Fruits and vegetables have relatively small or misshapen fruits. Various vegetables exhibit different levels of nitrogen deficiency. The leaves of broccoli at the seedling stage are relatively small, straight, the leaves are purple-red, the flower bulb stage lacks nitrogen, the flower bulb is not well developed, the ball is small, most of them are flower stalks, and the flower buds are also few, so they lose their edible value.
The phenomenon that occurs is that the growth is very slow, the leaves are relatively small, and the leaf color is faded or yellow, and it is dull. During balling, if the nitrogen is insufficient, the leaves will straighten and balling will be difficult, or the balls will be small and not yet fruitful. Of course the quality is not good.
Appears as a small plant with faded or yellowish-green leaves. In severe cases, the whole plant is yellow, the stem is very thin, the flowering and fruiting are relatively small, the fruit is small and short, light yellow or gray-green (the normal color of the cucumber fruit is dark green, the peel is smooth), the cucumber is prickly, the fruit is always deformed, and the fruit pedicle is light yellow. The paddle leaves are yellow-green in the early stage, and the whole plant is light green in the later stage, its leaflets are small and erect, the main vein is purple, and the cotyledons are particularly obvious, at this time there are few flowers, the fruit is small, and the cucumber plant is susceptible to gray mold.
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You can apply more fertilizer, add rotten organic fertilizer to cabbage, use nitrogen fertilizer, and use more biological fertilizer.
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Maintain soil moisture and pay attention to the use of compound fertilizers containing active calcium to regulate nutrients. It can also be prevented with medics. Timely fertilizer and watering to improve the disease resistance of the tree.
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The immediate cause of this disease is caused by a lack of calcium. Due to the arid climate and untimely watering, the soil solution concentration is too high and the plants cannot absorb enough calcium. Therefore, maintaining soil moisture and paying attention to the application of compound fertilizers containing active calcium can reduce the occurrence of "leaf burning".
Strengthen cultivation management, spray vegetables and fruits, timely fertilizer and watering, and enhance the disease resistance of vegetables.
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.
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