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Concept: Tomatoes with empty shells without water are called "hollow fruits". Refers to a fruit with a cavity between the peel and the pulp gelatinous. Although the impact of tomato hollow fruit on yield is not too great, it will seriously affect the commerciality and reduce the economic benefits, which cannot but be paid attention to in production.
Causes: Tomato hollow fruit is a physiological disease, and varieties with a small number of ventricles are prone to occur. In general, early-maturing varieties have a small number of ventricles.
There are many reasons for the formation of tomato cavitary fruit, the main reason is that the spraying time of hormones is improper, after spraying hormones on the calyx, peduncle and flower bud two days before flowering, the fruit development rate is faster than that of normal pollination, and it promotes ripening, but the placenta is more underdeveloped and leads to cavitation in the ovary; or insufficient light, photosynthetic products are reduced, and the nutrients transported to the fruit are in short supply, and a cavity is formed; or poor soil fertility, large varieties that require a large amount of fertilizer, nutrients in the later stage of growth can not keep up, carbohydrate accumulation is small, and hollow fruits also appear; or insufficient watering during the peak fruiting period; Or leave too much fruit, nutrients ** do not go up and form a hollow.
Control: The prevention and control of tomato cavitation fruit can choose varieties with more heart chambers; Rational use of regulators, each inflorescence has 2 3 When the flowers open, spray hormones, and the concentration of anti-falling hormone is 15ppm-25ppm, do not repeat; Apply sufficient basal fertilizer, adopt formula fertilization technology, and reasonably distribute nitrogen, phosphorus and potassium; In the peak period of fruiting, timely chase enough fertilizer and water enough to meet the nutritional needs of tomatoes, and according to the characteristics of the variety, pinch the tips in time, so that the vegetative growth and reproductive growth of the plant can develop in a balanced manner.
Effects on the human body: There is no effect, and it can be eaten with confidence.
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Hormone induces, so there is no moisture, so such tomatoes can not be eaten.
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The reason for the hollowness of tomatoes.
1.Breed issues.
At present, there are hundreds of tomato varieties in China, which can be divided into early-maturing varieties and late-maturing varieties according to the maturity of tomatoes. The main reason for hollow tomatoes is that when the tomato fruit is really developed, the placental tissue is underdeveloped, mainly in early-maturing varieties.
2.Poor fertilization.
Tomatoes are a hermaphrodite.
Flowering pollination should be done with the help of external wind medium, insect medium, etc. If tomatoes are exposed to rain for many days, the optimal time for tomato pollination will be missed, which will affect the normal fertilization of tomatoes, resulting in hollowing.
3.Water and fertilizer management.
The growth process of tomatoes should be topdressed in time according to the growth of tomatoes. If the tomato fruit begins to swell, if the nitrogen application is too large, it can easily cause the tomato stems and leaves to grow, and the fruit competes for nutrients, resulting in the fruit producing hollow fruits due to nutrient deficiency. In addition, if the tomato fruit swells rapidly and cannot be applied in time, hollowing can also occur due to nutrient deficiencies.
4.There are too many results.
At first, tomatoes do not appear hollow, but as the tomato plant continues to grow, the inflorescences.
As the location improves, the number of tomato fruits increases, and so does the possibility of tomato hollowing. Tomatoes bear too many fruits at once, while some fruits that grow on top of the fruit can occur due to a lack of adequate nutrients and water, resulting in hollow fruits.
5.Use of improper modulators.
Tomatoes are a hermaphroditic crop. In order to increase tomato yield, vegetable farmers usually use regulators such as Zodelin and anti-falling hormone to increase tomato yield. When using the conditioner, if the concentration is too high, or if it is repeatedly dipped in flowers, it will cause the tomato fruit to grow too fast, causing the placenta to underdevelop, leading to depression.
6.The temperature is too high.
Although tomatoes have strong heat tolerance, when the pollination of tomatoes increases, if the temperature is kept above 35 degrees for a long time, it will affect the expansion rate and rate of tomatoes, resulting in the appearance of hollow cores.
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1. Leaving too much fruit.
The amount of fruit left in each panicle is about 5, which leads to the competition for nutrients between fruits, the fruit of the lower part of the plant expands early, and the ability to compete for nutrients is strong, while the fruit of the upper part swells late, and the nutrients obtained are less, and the hollow fruit is more.
2. Water and fertilizer are insufficient.
Insufficient water and fertilizer leads to insufficient plant nutrition**, which affects the expansion of the fruit and leads to an increase in the number of hollow fruits.
3. The ratio of growth regulators is unreasonable.
Excessive dosage of spotting flowers, or excessive addition of gibberellin in spotting anthers, and unreasonable proportions, will also lead to the production of hollow fruit.
4. The temperature of the watering water in the greenhouse is reduced.
In the case of low temperature, the tomato root shrinks by cold, the root vigor is reduced, and the water absorption is poor, so that the young fruit of the plant is in the expansion period, and in the case of short-term lack of water, it is easy to appear local fruit with less flesh.
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Causes of tomato cavitous fruit: 1. Reasons for the formation of tomato cavitous fruit: First, poor fertilization, pollen formation is not full due to high temperature and insufficient light, and it cannot be inseminated normally, so that the internal development of the fruit is incomplete and the cavity is formed; second, too much nitrogen fertilizer is applied; The third is that the amount of hormone dipping in flowers is too large, or the flower buds are young when dipping flowers, which are easy to produce hollow fruits.
2. Six points should be paid attention to to prevent tomato hollow fruits: First, choose varieties that are not easy to produce hollow fruits; the second is to prevent planting with small seedlings; Third, fertilizer and water management should be appropriate to avoid excessive fertilization, especially excessive nitrogen fertilizer; Fourth, the correct use of dipping drugs to prevent the production of hollow fruits when handling young buds; Fifth, the temperature of seedlings and fruiting period is not easy to be too high, especially to prevent the night temperature of seedlings from being too high; Sixth, topping should not be too early.
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Although our current technology is very advanced, I think we should pay more attention to some dietary matters, because if you don't know that the season of this vegetable is this vegetable, and how many ingredients does it contain? It may not contain any nutrients, and it may even contain toxic ingredients.
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The varieties are different, the old varieties that were planted at home in the past are sweet and sour and soft when they are ripe; Now, in order to adapt to long-distance transportation and extend the shelf life, buyers prefer tomatoes that are hard and not easy to spoil, which has also led to growers slowly abandoning other varieties and gradually planting varieties that are resistant to transportation.
But you can't have both fish and bear's paws, the ones that are resistant to transportation are not delicious, and the delicious ones are not resistant to transportation. So most of the ones you buy in the supermarket have a bad taste.
Careful management and the use of chemical fertilizers, in the past, tomatoes rarely used chemical fertilizers, all used farm fertilizer, farm fertilizer is the highest nutrient, rich organic matter can improve the quality of vegetables.
However, now it is not a household farming, and the use of farm fertilizer has been reduced, and the taste is not as good as before when the fertilizer is used more. However, organic fertilizers in many products on the market can also improve the taste if used reasonably.
When it comes to tomatoes that are hollow and green and white, it is because of poor management, too much nitrogen fertilizer, lack of potassium fertilizer, too dense planting, poor lighting, too low temperature, and too fast fruit expansion ......In short, this situation will not occur with good management, and it is not simply the difference between using hormones and not using hormones!
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The reason is that when such tomatoes are not ripe or green, they are plucked and dipped in a kind of potion, and covered with a towel overnight, and they turn red the next day, and they are not easy to rot.
I myself experience a small vegetable garden, although it does not meet the standard of organic vegetables, to the point that it is definitely growing vegetables with conscience. No highly toxic pesticides, no chemical fertilizers to mature. Although my vegetables grow slowly and don't look good, my friends who have eaten them like them very much, and I feel at ease to eat them for my children.
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These tomatoes are picked and put to maturity before they are ripe.
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Anyway, the hollow ones are not delicious, and they don't have the original taste of tomatoes.
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Tomatoes can be ruined by the expert pot and cannot be eaten.
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