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I guess there should be a lot of people who like to eat cucumbers, especially cold cucumbers, which are sour, spicy, cool, and especially appetizing. It is also very good to eat it raw, with rich water content, especially suitable for replenishing water and relieving the heat.
The sales of cucumbers are particularly large, and the demand is so high, which has prompted many people to plant cucumbers, and there are some black-hearted melon farmers, in order to make profits, unscrupulous means, using various means to increase the yield of cucumbers, such as spraying hormones and auxin.
These cucumbers that are not naturally grown are certainly not tasty to eat, and they also have a bad effect on the human body, so how to identify the cucumbers in question? Please read on.
The growth process of cucumbers is to bloom first and then bear fruit, and after the fruit is ripe, the flowers wither, leaving the cucumber hanging alone on the melon vine. When you look at the purchase, you should choose a straight one without small yellow flowers to be considered a good cucumber. However, there are exceptions, and the following situations cannot be purchased, so let's continue to read on.
1. Don't buy deformed cucumbers.
Deformed cucumbers, most of them are the result of some malnutrition, can often be seen in supermarkets or markets, and the price is particularly cheap, you should be cautious when you see this cucumber, not to mention the bad taste, and may have injected excessive hormones or auxin, resulting in serious deformation. Therefore, when you see these misshapen cucumbers, it is recommended not to buy them and eat them.
Second, don't buy coarse cucumbers.
The spines of normal cucumbers are small and short. And cucumbers that have been injected with hormones or auxin, it has a lot of thorns, and it is particularly thick and long, which is uncomfortable to touch, and it is not recommended to buy these cucumbers.
3. Don't buy cucumbers with flowers.
Don't think that cucumbers with small yellow flowers are fresh, they are just picked, and they are still so bright when you buy them for a few days, why is this? The key to buying cucumbers is to look here. First of all, if the cucumber with a cucumber may be a violation of the law of natural growth, a mature cucumber will not have a cucumber, then the cucumber with a small yellow flower, it is very likely that the growth hormone is played, resulting in the cucumber is ripe, and the cucumber has not withered.
Fourth, don't buy light-colored cucumbers.
Naturally ripe cucumbers, need to go through 7 15 days of sunshine, to mature, so that the cucumber skin color will become dark green, not after this process of cucumbers, the melon skin is particularly green, either it is hormones, or it is sprayed with auxin, so that their growth cycle is shortened, the sunshine time is directly reduced, so there will be a situation of green melon skin, it is recommended not to buy such cucumbers.
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Have you ever eaten a "misshapen" cucumber and know how it grows? Rest assured when you eat!
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Deformed cucumbers can be eaten, and every fruit and vegetable has an ugly beauty, and it cannot be deprived of the right to be eaten just because it looks ugly.
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Those misshapen cucumbers are edible, but they are crooked, just like regular cucumbers. Morphed cucumbers are cheaper, so they are edible just like regular cucumbers.
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Those deformed cucumbers can be eaten, but the cucumbers are crooked, which is the same as ordinary cucumbers, and deformed cucumbers** are cheaper, so they are the same as ordinary cucumbers.
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The common deformed melons of cucumbers include curved melon, sharp-mouthed melon, pot-bellied melon, bee waist melon, etc., and the deformed melon is mainly caused by the influence of climatic conditions or improper management, of course, some varieties themselves will also cause the fruit to produce deformed melon. Let's talk about the causes of cucumber deformity, and at the same time learn about the prevention and control methods of cucumber deformity.
1. Causes of cucumber deformity.
1. The reason for the formation of curved melon.
There are two types of bowed melons and hooked melons.
The toxo-shaped melon is caused by the fact that the cucumber is hindered by some hard objects during the growth process, resulting in the melon body touching the ground and not growing normally. If cucumbers are hindered by frames, ropes, and stems during growth, they will also form bow-shaped melons. The formation of curved melon is mostly caused by the poor growth environment, such as high temperature, drought, lack of fertilizer, pests and diseases, weak plant growth, etc.
2. The reason for the formation of the sharp-mouthed melon.
The main reasons are high temperature, weak light, drought, lack of fertilizer and serious pests and diseases in the greenhouse, which lead to the lack of nutrients and water for the growth of young melons.
As a result, the top part of the fruit receives less nutrients and water and slowers to expand, while the middle and bottom cucumbers will grow much faster than the top cucumbers because they receive more nutrients and water, and finally the sharp-mouthed melon will be formed.
3. The reason for the formation of pot-bellied melon.
Potbelly melon also occurs mostly in the middle and late stages of cucumber cultivation. Poor pollination, senescence of the plant, limited nutrients and water are preferentially transported to the top part of the fruit, the top expands quickly, and the middle base lacks nutrients and water grows very slowly, and finally the potbelly (big head) melon will be formed. Lack of fertilizer and moisture, high temperatures, low light, and severe pests and diseases are the main reasons for the formation of pot-bellied melons.
4. The reason for the formation of bee kidney melon.
Bee waist melon, also known as thin waist melon, mostly occurs in the middle and late stages of cucumber cultivation. When the plant is weakened, the soil moisture condition is unstable, and the young melon receives more nutrients and less water, in which case the bee melon will be formed.
2. Preventive measures for deformed melons.
1. Prevention and control methods of pot-bellied melon.
Watering at the right time and in the right amount to control the temperature and avoid large temperature differences. Appropriate topdressing of potassium fertilizer to ensure the normal development, flowering and pollination of male and female flowers.
2. Prevention and control methods of sharp-mouthed melon.
1) Use more organic fertilizer and water more to improve the water supply and fertilizer supply capacity of the soil and prevent the plant from wilting.
2) To build a warm greenhouse, the greenhouse should use a film with good light transmission to increase light transmittance.
3) Grasp the planting spacing of melon seedlings to ensure that each plant can have sufficient nutrition and growth space.
3. Prevention and control methods of bee kidney melon.
Reflective film can be hung in the garden to enhance the photosynthesis of cucumbers and increase material accumulation. At the same time, the amount of trace element fertilizer can be increased to supplement enough nutrients to cucumbers.
4. Prevention and control methods of curved melon.
Do a good job in temperature, humidity, light, water and fertilizer management, if the temperature is too high or too low, it will lead to too large or too small temperature difference, which will affect the normal growth of cucumbers.
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Common deformed melons and the causes of deformities:
Curved melon: The melon strips are curved like hooks. Caused by insufficient light and improper management of temperature and moisture. Female flowers or young fruits can also be bent if they are shaded by the trellis and stems.
Sharp-mouthed melon: The upper part of the melon strip is normal, and the lower part is sharp-mouthed. This is mainly due to the low number of pollinators in greenhouses in early spring. Although cucumbers can bear fruit unisexually without pollination, they can only develop into normal fruits when the nutritional conditions are good, and if the nutrients are insufficient, they are easy to form long-nosed melons.
Pot-bellied melon: The upper part of the melon strip is slender, and the lower part is expanded into an oval spherical shape. This is due to insufficient pollination of female flowers, and the anterior terminal compartment of pollination swells first. The unpollinated posterior part is not swollen. If the nutrients are insufficient, it is easy to form this melon when the water is insufficient.
Thin waist melon: The end of the melon strip is normal. The middle section is tapered.
It is due to the time difference of nutrients and water **. Melon strips accumulate nutrients unevenly, resulting in c addition. Scarchins can also occur when plants are infected with scab or boron deficiency.
If deformed melons are found, they should be removed in time. to reduce nutrient consumption.
Precautions when growing cucumbers:
1. Temperature and humidity control.
Generally, the minimum temperature at night is not lower than 10, and the daytime temperature is kept below 30; Increase ventilation and lower the humidity in the shed to prevent diseases.
2. Reasonable fertilizer and water.
To control the amount of nitrogen fertilizer used to prevent vigorous growth, it is recommended to use 5-10kg mu of Loew black cohesion balance type during the melon expansion period, so that the plants grow in a balanced manner to prevent the appearance of deformed melon.
3. Plant adjustment.
Remove deformed melons in time, reduce nutrient consumption, regularly remove diseased old leaves, increase ventilation and light transmission capacity, and appropriately retain melons according to the actual growth of the plant, so as to avoid increasing the rate of deformed melons due to excessive load, and can keep melons at intervals.
4. Disease prevention and control.
Cucumber diseases are relatively common, so ventilate as much as possible and keep the humidity in the shed low to prevent the occurrence of diseases. Spray pesticides regularly to prevent downy mildew, powdery mildew, target spot, corner spot and other diseases.
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It may be a problem with the variety, it may be that the management and control have not been strengthened, it may be that it has not been watered and fertilized in time, it may be that there are pests and diseases, and it may be that there is a lack of fertilizer.
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Because the cucumbers grown at home are not planted and the shape of the cucumbers is not improved, the cucumbers are prone to deformity.
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Because this cucumber lacks nutrients and has a very serious pest infestation, it is easy to become deformed if it is not watered enough.
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Now this season is the last growth period of open-air cucumbers, flowering and fruiting on nutrient requirements are also increasing, cucumbers appear small head phenomenon is not only caused by the lack of various elements, it is related to the nutrient management of growers, pesticide use and pests and diseases, including cucumber deformed melons are also directly related to these factors. Specifically, we analyze the following situation.
First, the pesticide is used too frequently and the amount of pesticides used during the planting of cucumbers, mainly fungicides, insecticides, etc., the duration of these pesticides is generally 1-2 weeks, the shortest is 3-5 days, if cucumbers are frequently sprayed with these pesticides, it is bound to cause pesticide damage, directly affect the normal body shape of cucumbers, and then appear deformed fruits.
Second, the problem of fertilization in cucumber planting cucumber planting process is too much chemical fertilizer, which will directly cause the cucumber to appear deformed small head, mostly because cucumber in the growth period, the use of too many macro elements and trace elements, if the use of these chemical fertilizers is improper, it will cause the fertility of the soil to decline, if you eat too much, it will directly cause damage to the cucumber, and the deformed melon fruit will appear.
In addition, cucumber diseases and pests will also directly cause deformed melons, such as common powdery mildew, leaf wilt, double eyebrows and other diseases, which will cause cucumbers to fail to grow normally, and then affect the growth and appearance of cucumbers. These are the main reasons that directly lead to the small head of cucumbers.
The general principle of preventing cucumber deformity is to carry out dense planting reasonably, remove the lower yellow leaves in time, increase the irradiation of sunlight, enhance the photosynthesis of cucumbers, increase the organic fertilizer of farmers, apply potassium fertilizer and boron fertilizer, and most importantly, not carry out flood irrigation, which can effectively prevent cucumber deformity and increase yield and economic value. Cucumber wants to achieve high yield, with the development of agricultural technology, spray potassium dihydrogen phosphate foliar fertilizer every 7 days in the early stage of flowering and fruiting, and spray a total of 2-3 times will have a good effect.
The above is my personal opinion, I hope it can help you.
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This is because cucumbers that look like this look particularly ugly, and others think that the taste is problematic, so it will affect sales.
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Because it's not pretty. People will also look at the appearance when they buy things, and the deformed cucumber will not look good, so people don't buy it.
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The production of cucumber deformed melons is often due to insufficient nutrition, the influence of environmental conditions (such as low temperature in the early stage and high temperature in the later stage), rapid changes in soil moisture, or due to poor fertilization and uneven seed development. The main way to prevent deformed melons: strengthen field management, ensure that the nutrients can be sufficient, the needs of cucumber growth, and ensure that the water is sufficient and uniform during the fruiting period.
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Mainly because the deformed melons grow too ugly, people don't like deformed cucumbers very much.
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When the temperature difference between day and night is less than 2, or even the night temperature is higher than the daytime temperature, it is easy to appear thin waist melon. On the contrary, if the temperature in the greenhouse reaches 30 for a long time during the day on a sunny day, and then it is lower than 16 in the first half of the night, the excessive temperature difference between day and night will make the plant develop in the direction of reproductive growth, producing a large number of cucumbers, and the vegetative growth ability of the plant itself will slowly weaken, resulting in a large number of deformed melons. After May every year, the outside temperature rises, when the temperature in the greenhouse is higher than 30 for a long time, the quality of cucumbers will be seriously reduced, and deformed melons such as sharp mouths, big bellies, and curved melons will also be produced in large quantities.
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Because these deformed cucumbers are particularly poor in appearance and look particularly ugly, people will not buy this kind of cucumber.
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Because the misshapen cucumber is very ugly, it makes people feel that such cucumbers have germs, so they are generally not purchased.
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Because consumers don't like it, consumers feel that such melons are not delicious and not good-looking.
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First of all, it is necessary to select high-quality cucumber varieties that are resistant to pests and diseases, have strong self-immunity, strong results, and have few deformed melons. In the process of planting, it is also necessary to consider the effective planting density, so that they have sufficient space for growth, to ensure their light and ventilation, so that the photosynthesis of plants can be improved.
The most suitable temperature for growing cucumbers is about 20, if the temperature is too high, it will have a negative effect on cucumbers, resulting in the existence of deformed melons. This is the method of strengthening the control of the field, which can be used with our chemical fertilizer to fertilize, which is conducive to reducing the existence of deformities in cucumbers.
The second is that the control of fertilizer and water should be harmonious to ensure scientific fertilizer. In the overall growth process of cucumbers, scientific and standardized fertilizer and water control is very important, too much or single use of nitrogen fertilizer or manure, pig and cow manure, may cause insufficient organic fertilizer, which is also the factor causing cucumber deformity. Therefore, in the process of fertilization, we must not only remember to apply organic fertilizer, but also need to grasp the fertilization aspect.
In the later stage, it can also spray pesticides with concentration value on melon vines, which can effectively prevent the senescence of melon vines and ensure the maturity and stability of cucumbers. For sprinkling, it is also necessary to consider uniformity, and do not wet and dry. During the fruiting period, water should be sprinkled once a week as much as possible.
The fruit ripening stage requires water in the Ming Dynasty, and it is recommended to sprinkle water at least 3 times a week.
Finally, if you notice a deformed cucumber, you can correct it immediately. For example, a deformed cucumber is tied to a small bamboo strip so that it can slowly straighten up. Or a rope to hang something heavy, with the help of gravity to straighten it, these are all good methods.
And if it is a deformed melon that cannot be avoided, it needs to be removed immediately to avoid consuming nutrients.
Therefore, it is necessary to use the above methods to avoid cucumber deformity.
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