When planting cucumbers, what are the reasons why melon seedlings grow and produce fewer melons?

Now is the season when cucumbers bloom and bear melons, and some growers will find that the cucumbers they grow have bloomed a lot, but not many of them have produced melons, and some melons do not even bear melons on their seedlings. Cucumber in the flowering period and the melon sitting period, it is indeed easy to appear the phenomenon of crazy growth of melon seedlings, the crazy growth of melon seedlings will make the nutrients concentrated to supply the melon seedlings, so that the melon seedlings continue to grow at the same time will also grow new branches, leaves, new branches and leaves will absorb most of the nutrients in the soil, which is not only not conducive to the expansion of cucumbers, but also will make the cucumber unable to sit on the melon.

<> pollination is a necessary process for plants to bear fruit. It is usually carried out by natural wind or insect propagation in nature. However, if pollination is not successful and there is little melon bearing, it is necessary to carry out manual pollination.

Weather reasons, due to the cucumber flowering, the weather temperature is relatively low, resulting in the flower is not successful, this is often said to run, that is, the light rises Teng does not bear melons. You need to have 8 to 10 hours of sunshine per day. In terms of soil, it is necessary to loosen and fertile soil that is not suitable for stagnant water.

Understand the growth habits of cucumbers, and make as few mistakes as possible in the planting process.

In the evening people feel that the temperature drops in the climate, the ground temperature is just the opposite, at this time the cold water pumped out from the ground to irrigate the cucumber, a cold and a hot just to the cucumber roots caused great damage, directly affect the growth of cucumber roots, the cucumber in the later upper part of the cause of serious nutritional disorders. Cucumbers are also afraid of high temperature weather, and this year's drought and high temperature water shortage reasons, to water more, but not too much will make the fertilizer lost, watering once every two days can be. Fertilization should be mainly based on scale fertilizer and potassium fertilizer, and agricultural miscellaneous fertilizer can also be used.

When the cucumber plant body branches and leaves vines develop strongly, it can enhance its tillering ability, and the male and female flowers can also open evenly on the same plant, if the cucumber plant grows out of balance during the growth process, it will destroy the branching ability of the cucumber plant, resulting in the cucumber plant only opening male flowers and not female flowers, or only a very limited number of female flowers at the tip of the vine.

There are several main reasons, first, cucumber growth, cucumber growth is caused by moisture, suitable temperature, and excessive nitrogen fertilizer. Cucumber is one of the melon plants that are not tolerant to cold and like warmth, are widely planted in the north and south of our country, because cucumber has relatively moderate requirements for the length of light, in the winter solar greenhouse in the north, the light is shortened to 8 hours, and the same can achieve a better yield. In winter, greenhouses in the north add color to the local vegetable market.

Nitrogen fertilizer is effective, when nitrogen fertilizer is applied sufficiently, and the temperature is too high, especially at night, the temperature difference between day and night becomes smaller. Cucumbers grow well in the range of 25 to 30 degrees during the day and 15 to 18 degrees at night, and when the night temperature is higher than 20 degrees, it is possible to grow, and the fruit is less, due to the high temperature at night, the nutrients are transferred to the fruit and the seedlings are turned to grow more.

Cucumber growth and less female flower differentiation of cucumber are caused by excessive nitrogen fertilizer. Ethephon treatment at the seedling stage can significantly increase the number of female flowers, and the general concentration is 200 ppm.

"The autumn cucumbers planted in previous years have already borne fruit at this time, and this year's seedlings have grown more than two meters high, and only occasionally produce a cucumber." "Yesterday morning, looking at the vigorous autumn cucumber seedlings, Kong Daxing and others, who live in Yaoshan Town, Lushan County, were puzzled.

Kong Daxing told reporters that this spring, she bought a bag of autumn cucumber seeds at a seed dealership in the town, but after planting, she only bloomed but did not bear fruit, and it was not until a few days ago that a few cucumbers were produced.

This phenomenon is very common, and the autumn cucumbers planted by my family this year are also like this, the seedlings have grown more than two meters long, and there are less than 10 cucumbers. Hu Ying, a villager in Xinzhuang Village, and others were also confused.

The reporter saw in Kong Daxing's vegetable garden that the autumn cucumber seedlings climbed very high, and there were all yellow and clear flowers on them, but there were few cucumbers. Kong Daxing said that her family grows autumn cucumbers every year, and in previous years, cucumber seedlings began to bear fruit when they grew more than one meter high, but this year they only saw melon seedlings but did not see fruit.

This is a typical 'flower topping', also known as 'flower holding head' or 'top flower', which is a common physiological disease of cucumber. Yesterday morning, a person in charge of the agricultural plant protection station of the Lushan County Agricultural Bureau told reporters that due to the drought in the early part of this year, there has been too much rain recently, and the cucumber grows too fast due to the influence of high temperature and high humidity, resulting in the phenomenon of "flower topping".

Of course, soil drought, too much fertilizer, insufficient moisture, etc. can all cause such phenomena to occur. The person in charge said that once the cucumber "flower topping", the female flowers should be removed in an appropriate amount, and the foliar surface should be sprayed with 300 times potassium dihydrogen phosphate, and the top of the cucumber seedlings can also be cut off to control its vigorous growth.

My family has ...... of winter cucumbers

It is due to the increase of plant space due to the empty length, which leads to the lack of light in the field, which affects the physiological function of cucumber flower bud differentiation. The fruit setting rate decreased, which inhibited the reproductive growth of cucumber and reduced the fruit setting rate. The reasons for the empty length are as follows.

Due to excessive nitrogen application, cucumber plants grow too fast and reproduce asexually, which inhibits the reproductive growth of cucumber, resulting in low fruit drop rate and small fruit growth. Do not use high-nitrogen fertilizers during cucumber planting. High nitrogen fertilizer can easily lead to overgrowth and vigorous growth of cucumber plants, and inhibit the absorption of potassium and phosphorus by cucumber plants.

When fertilizing, a balanced fertilizer should be selected to promote the absorption of phosphorus and potassium.

However, increasing the application rate appeared to inhibit nitrogen uptake and control the vigorous growth of cucumber plants. After cucumber grafting, fertilizers with low nitrogen and high potassium should be used as much as possible to avoid inhibiting the flower bud differentiation after the vigorous growth of cucumbers. Potassium dihydrogen phosphate can be used as a foliar spray to promote rooting and flower bud differentiation.

The dosage of potassium dihydrogen phosphate is generally between 50-100g, and the specific dosage depends on the growth of cucumber plants. When cucumber is sprayed with foliar fertilizers such as potassium dihydrogen phosphate, it is mainly sprayed on the back of cucumber leaves, which is conducive to nutrient absorption.

The spraying time should be selected in the morning and evening to reduce volatilization during spraying. The temperature is not suitable for the growth of cucumbers. The temperature is generally 20-30 degrees.

When the ambient temperature is above 30 degrees, cucumbers can overgrow. For cucumbers grown in greenhouses, moderate temperature control should not be too high or too low to increase the accumulation of dry matter.

Cucumber seedlings do not grow melon is caused by empty length, because the empty length increases the plant space, resulting in insufficient light in the field, which affects the physiological function of cucumber flower bud differentiation, and the fruit setting rate decreases, the empty length inhibits the reproductive growth of cucumber, and the fruit setting rate decreases, and the reasons for the empty length are the following factors. Due to the excessive nitrogen application rate, the cucumber plant grows too fast and grows asexually, which inhibits the reproductive growth of cucumber, resulting in low fruit drop rate and inhibiting fruit growth. In the process of cucumber cultivation, do not use high nitrogen fertilizer, high nitrogen fertilizer is easy to cause cucumber plants to grow vigorously, and inhibit the absorption of potassium and phosphorus by cucumber plants, and choose a balanced fertilizer when fertilizing to promote the absorption of phosphorus and potassium.

After cucumber grafting, in the choice of fertilization, low nitrogen and high potassium fertilizer should be selected as much as possible, so as not to inhibit the flower bud differentiation of cucumber after vigorous growth. Potassium dihydrogen phosphate can be used as a foliar spray to promote rooting and flower bud differentiation. The dosage of potassium dihydrogen phosphate is generally between 50-100 grams, and the specific dosage depends on the growth of cucumber plants.

When spraying foliar fertilizers such as potassium dihydrogen phosphate on cucumbers, they are mainly sprayed on the back of cucumber leaves, which is conducive to nutrient absorption.

The spraying time is chosen in the morning and evening to reduce the amount of volatilization during spraying. The temperature is not suitable for cucumber growth, and the temperature is generally 20 to 30 degrees. When the ambient temperature is higher than 30 degrees, cucumbers will grow too vigorously.

For cucumbers grown in greenhouses, moderate temperature control should not be too high or too low to increase the accumulation of dry matter.

In addition, master the watering time, try not to water cucumbers during the flowering and fruiting period of cucumbers, avoid too high water or temperature, asexual growth inhibits reproductive growth, and balances cucumber growth by inhibiting asexual growth, which can be sprayed with calcium boron foliar fertilizer to promote cucumber flower bud differentiation. The main reason for the formation of this phenomenon is transplanting with the seedlings, the flower bud formation and development of this seedling are relatively slow, the number of flower buds is small and late, the female flowers are easy to melt and fall off, even if the melon is not well developed, if this seedling is used, it must not be early maturity, let alone high yield. Watering should be observed frequently, look at the faucet, tendrils, melons, and watering according to the water demand of each period.

Do not water too early or too late.

It may be a lack of potassium fertilizer, a lack of water for cucumber seedlings, or it may be that the temperature is relatively low so that the seedlings do not bear fruit. You can ventilate frequently, enhance the light of the sun, and add some potassium fertilizer or phosphorus.

In the process of cucumber planting, if the cucumber only grows seedlings but does not bear melons, it means that the cucumber seedlings are too vigorous.

It may be because of the lack of fertilizer, so it will lead to unaccustomed to it, you can spray more fertilizer water, or directly sprinkle some organic fertilizer.

It may be that it is defertilized, and top dressing should be carried out in time. Cucumber grows fast, bears many fruits, likes fertilizer, has weak root fertility tolerance, and has strict requirements for soil nutrient conditions. It has been determined that n needs to be taken from the soil for every 1000 kg of cucumber produced.

The ratio of the three is that cucumber needs the most potassium during the whole growth period, followed by nitrogen, and then phosphorus.

If the nitrogen (N) fertilizer is insufficient, the leaves will be small and yellow, the flower buds of no new branches will be reduced, the flowering will be serious, and the later stage will be prematurely senescent. If there is too much nitrogen fertilizer, the plant will grow, the flowering and fruiting will be delayed, and the disease will be serious. Lack of (P) flower buds can not be formed, flower organs are poorly developed, not only flowering is delayed, but also flowers and fruits will fall, the leaves will turn yellow in the later stage, and die in severe cases.

When potassium (k) is deficient, the leaves lack green, the leaf margins are scorched, the growth is slow, the stems are weak and easy to lodging, and they are drought resistant. Poor cold resistance, affecting crop yields. Boron (b) has an important impact on the formation of flower organs, when boron deficiency flowers are not fruitful, flowers fall and buds, pollen vitality is poor, swelling rings are easy to appear on the petiole, hindering nutrient transport, leaves are yellow, old leaves wilt in severe cases, and new leaves do not grow.

The root system of cucumber is weak, and it is particularly sensitive to high concentration of fertilizer, and it is easy to burn in the case of high fertilizer concentration. Cucumber grows fast, bears fruit early, vegetative growth and reproductive growth go hand in hand at the same time, and nutrients are required to be strict, therefore, the fertilization of cucumber should be fertilized at a low concentration and appropriately increase the number of fertilization methods, that is, diligent application of thin application, "eat less and eat more".

The yield level is 7500 kg mu: 4-5t mu of organic fertilizer application, 10 kg of urea for nitrogen fertilizer, 15-20kg of superphosphate for phosphate fertilizer, 25-30kg of potassium sulfate for potassium fertilizer with "Yanwo microbial agent", the effect is better.

The cucumber seedling stage is at a low temperature of less than 10 for a long time, which makes the seedling age too large and becomes a stiff seedling, which affects the differentiation of flower buds. If the high temperature at the seedling stage is high, the cucumber seedlings will grow, which will also affect the flower bud differentiation. Cucumbers should be planted in early spring to control the temperature appropriately, 20 25 during the day and 12 16 at night is the best. The environment is not suitable during the melon setting period.

Cucumber bearing stage ,..

If the cucumber seedlings are growing well, and the cucumbers are not large. You can try to pinch some of the cucumber flowers to make the fruit nutritious!

Finally, whether it develops into male or female flowers is determined by environmental conditions. If in the process of flower bud development, there is a period of time that is conducive to the formation of both female and male flowers, it is possible to form a hermaphroditic flower, that is, a complete flower, and the cucumber produced from the complete flower may be a melon.

<> is a symptom that can occur during both open-field and protected cultivation of cucumbers. Cucumber fruit deformity, both affect the quality and commerciality of cucumber, a sapling is pressed by the stone, can not stand up to grow crookedly, cucumber is the same, if we cucumber fruiting period, the shelf is not high enough, cucumber happens to be against the hard ground or, in order to adapt to the environment, have to grow deformed, cucumber flowering, encounter continuous rain, poor pollination also seriously affects the final yield of yellowing, greatly reduce the output value of cucumber and planting efficiency. Necessary measures need to be taken, the illumination is insufficient, the temperature difference between day and night is small, the density is too large, the light transmission is poor, and the fertilizer and water are insufficient.

The control method is to strengthen fertilizer and water management, increase the application of organic fertilizer, improve the water supply of the soil, and occasionally there will be complete flowering of both sexes during the flowering period, and in most cases, the appearance of complete flowers of both sexes on the same plant will lead to poor fruit set or deformed fruits.

Another cause of cucumber fruit deformity is that during the development of the fruit, sometimes the environmental conditions change drastically, the water and nutrient temperature are not straight, and they are bent to one side into a "D" shape, "O" shape or half an "O" shape. The physiological causes of curved melons are mostly due to malnutrition and thin plants. First, the female flower is incompletely fertilized, resulting in unbalanced fruit development; Then there is insufficient light, damage to the roots, or the disease is not fertilized, so build a greenhouse reasonably to improve the light transmittance.

Planting to maintain a reasonable density, so that the crops are reasonable to prevent a lot of growers will find that the existing cucumbers appear some irregular, different sizes, this phenomenon is also what we often call "deformed melons", and some cucumbers appear small head of fruit, and there is a large stomach in the middle of the cucumber, which is also a big belly.