What is the reason for the loss of flowers and fruits in the home grown melons?

Whether fertilization is appropriate. If the fertilization is too close to the roots of the plant, it will cause the plant to lose water physiologically, and the leaves will also turn yellow, causing flower and fruit loss. The excess nitrogen fertilizer leads to lush leaves, so there is a phenomenon that the seedlings grow well but do not bear melons.

Another reason is the lack of light and low temperature, the length and intensity of light have little impact on the vegetative growth in the early stage, but have a great impact on reproductive growth. If there is not enough light in the greenhouse, or the light time is too short, it will affect the normal pollination of flowers.

<> seedlings grow to 4-5 true leaves.

The main vine topping, select 2-3 strong seed vines, leave 2 grandchildren to leave melons (leave melon nodes 2-6 sections, 2 mornings, 6 nights), leave 2 leaves in front of the melon topping, and the seed vines are topped at 15 leaves. Generally, each plant leaves 3-5 melons, to induce female flowers to sit melons: the use of Shi preferential treatment of female flowers, on the day of female flowers or two to three days of flowering, with Shi Te excellent soluble liquid every day with water 1.5 to 2 catties of soaked melon tires or spray melon tires evenly with a sprayer.

Hormone treatment, according to the melon variety and the temperature in the shed for the concentration of the agent, add promethane suspension agent to prevent and control the occurrence of gray mold, the day or the next day of flowering and direct spraying, must ensure the normal opening and growth of flowers. Cultivating soil, easy drainage. In May and June.

When there is a lot of rain in the south, too much rain will make the soil too wet and even waterlogged. For roots that are not tolerant to waterlogging, it is necessary to avoid soil waterlogging. In the case of sufficient basal fertilizer, top dressing can be done without watering before fruit set, so as to control vegetative growth and promote reproductive growth.

Phosphorus and potassium fertilizers should be increased during top dressing to reduce the amount of nitrogen fertilizer.

Watering moderately, not too much or too little, apply more organic fertilizer, and increase phosphorus and potassium fertilizer. Water and fertilizer control in the early stage to promote root growth, and fertilizer and water management to promote fruit expansion in the later stage. Pay attention to pruning and forking, the transformation of vegetative growth to reproductive growth, reasonable watering, and timely drainage.

Small water is generally used.

Frequent watering, thin fertilizer and frequent application of fertilizer to keep soil moisture at about 70%.

There are two reasons, one is that the light is insufficient, the general fruiting plants have higher requirements for sunlight, if the light is insufficient, then it is difficult to bear fruit, and the other is that the soil is not fertile enough, and the plants do not have enough nutrients to bear fruit.

Melon is a cucurbitaceae crop that originated in the desert areas of Africa, prefers sunlight and heat, but is not resistant to moisture, low temperatures, and diseases. Therefore, the cultivation of melons should be based on the characteristics of the melons themselves, give sufficient light, warm and dry environment. In general, it is necessary to visit the scene in person, observe the actual situation in the greenhouse, see the specific situation, and provide symptomatic rescue to solve the problem.

Specifically, we will inspect and implement measures based on many factors such as soil, fertilizer, moisture, diseases and insects, light, and whether there is a large temperature difference.

At the beginning, melons were planted in greenhouses, and there was no cold shed at all, but now it has been developed for more than 20 years, and there are more and more greenhouses, cold sheds, and felt cold sheds. But the reasons for the melons to fall have not changed. Let me talk about the occurrence of falling flowers, there are many reasons for this phenomenon, and the root cause can be found out by elimination.

As far as I know, there are the following: one is the problem of fertilization, the second is the problem of temperature, the third is the problem of humidity, the fourth is the problem of light, and the fifth is the problem of air circulation.

The first is to improve the ecological environment: to remove the water around the planting area. It is necessary to uncover the plastic massage in the morning, and remove the cover in the morning and evening, which is both light and insulated.

It is necessary to uncover the pure film at both ends of the greenhouse or at the base of the greenhouse on rainy days to supplement the scattered light source. Greenhouse because there is almost no medium to spread pollen, which will lead to poor pollination, and too much humidity in the greenhouse will hinder root respiration, which will also lead to flower and fruit drop. In recent years, more and more thick-skinned melons are planted in solar greenhouses, generally planted spring stubble, planted around March 20, harvested in May, the growth cycle is very short, the price can also be, it is a good choice for planting greenhouses.

The purpose is to protect the flower and fruit, it is best to use bee pollination instead of chemical hormones pollination, the seed setting rate is high, the taste quality is good, but do not play the bees that are harmful to the killing of the land insect agent, if it is cultivated in a protected area, the temperature should be manually controlled, and the high temperature will make the pollen sterile. Insufficient light and light will reduce the quality of melon, and more importantly, it will affect the yield, so you can spray foliar fertilizer for the photosynthesis of melon leaves.

It is because of improper management at the seedling stage, which affects the differentiation of flower buds, so it must be managed and artificial pollination is adopted.

It may be that the temperature is too high, there is no regular watering, and at the same time there is no good fertilization, so this situation of falling flowers and fruits will occur.

It may be that the growth of melon is missing nutrients, so it leads to early flower and fruit fall, and the lack of water will also lead to this situation.

Whether it is a melon or a melon, the greenhouse or outdoor must meet the minimum of 10 degrees, the highest 20 degrees, so that the melon can barely grow, flower and bear fruit, of course, this is already the minimum requirement According to what you said, it may be caused by too much water and too high temperature, resulting in excessive growth. It is recommended to do a good job in controlling fertilizer and water, releasing wind and temperature, etc., to control the growth potential. After the melon sits firmly, increase fertilizer and water to improve quality and yield.

Greenhouse melons are cultivated in 4 or 5 villages here in our place, mainly concentrated in the sandy loam soil along the canal river, and the water, light and soil are more suitable for cultivating greenhouse melons. The main variety cultivated is thick-skinned melon, which has high economic benefits. The fruit-setting period generally refers to the fruit-setting period after the melon is planted and the seedlings are slowed down, from the female flowers of the melon-bearing part to the size of the young walnut, and the fruit surface begins to "dehair", which generally takes about 6-9 days, and there is little difference between different varieties.

Cultivation is a critical period for normal fruit set.

Water and fertilizer management. Melons have higher water requirements, and excessive water reduces the sugar content. At the same time, it should also be fertilized scientifically, in the peak growth period and fruit expansion period, it should also be watered in time to prevent drought, and drainage should be carried out immediately in case of waterlogging, and with the spraying of new high-fat film to protect moisture and waterproof evaporation, isolate the source of diseases and insects.

The 4 true leaves are topped when they are just emerging, leaving the 3 branches of the 2nd and 4th segments. After the seed vine grows 3 true leaves (excluding the true leaves on the main vine), carefully observe whether there are female flowers in the axils of the first 3 leaves, if there are, leave 3 leaves for topping, and leave the female flowers on the seed vine to bear melons.

To achieve high yield and high quality in the production of thin-skinned melons in plastic greenhouses, it is necessary to do a good job in the management of the early stage of melon setting, mid-term expansion of melon and later leaf protection. The number of melons mainly depends on the technology of pruning and leaving melons and the soil moisture content before flowering, and the sufficient fertilizer and water in the melon expansion period is the key to its high yield, management points, thick-skinned melons (Elizabeth, Yellow Luoluo, reticulated melons, etc., originated in the dry areas of Asia, Africa and Latin America), thin-skinned melons (commonly known as melons, originated in China) There are few differences, but there is a common point Proper fertilizer and water control, prevention and control of falling flowers and melons.

1. The deficiency of trace elements will also aggravate the phenomenon of flower and fruit drop of melon, especially the shortage of boron, because boron is directly involved in flower bud differentiation.

2. The application of too much basal fertilizer, especially the partial application of available nitrogen fertilizer, causes growth, inhibits the differentiation of flower buds, and thus causes fruit drop.

It may be because the quality of the melon is not very good, excessive spraying of pesticides, excessive fertilization, or it may be because the melon is sick and lacks certain nutrients. It is also possible that there are many small insects in melons and fruits. It is also possible that it has dried up, so when this phenomenon occurs, it must be timely**, which is not a trivial matter.

Melon flower and fruit drop, mainly because of the lack of boron this trace element, usually let the melon get enough macrolaser synthesis, appropriate amount of watering, improve the fertility of the soil should also be fertilized in a timely manner, balance the nutrients in the soil, suitable for plant absorption to improve the soil environment, so that the melon can grow healthily, of course, we should also pay attention to bumblebee pollination, improve the plant spike of melon and sell photosynthesis, so as to reduce the fall of iron melon flowers and fruits.

Be sure to strengthen field management, don't water too much water, just the right amount, ensure that the light is sufficient, choose fertile soil, and fertilize it evenly. Scattered.

Fertilization should be appropriate, watering should be appropriate, and finally scientific pollination, only by combining them can the situation be prevented.

The main reasons for the lack of melon are as follows: First, the excessive use of nitrogen fertilizer is caused by excessive growth and excessive growth, so pay attention to nutritional balance. Second, improper pruning, caused too early or too late, should be topped in the 4-5 leaf pruning and track section; The third is that artificial assisted pollination is not timely, and artificial pollination should be carried out in time to promote cucumber in the case of few insects.

Fourth, there is too much watering during the flowering period.

Infection with bacteria will cause rot melons, mainly rotten diseases are bacterial horn spot disease, rot disease. These germs are spread through soil, seeds, and infection, while pathogenic germs can be spread by insects through rainwater splashes. Sometimes, adding more potassium fertilizer will inhibit the uptake of nitrogen fertilizer after it has been modified, and calcium deficiency will produce rotten pumpkins.

Improper management, sometimes too densely planted, too high humidity in the field, seeds and seedlings are not sterilized, malnutrition growth momentum is weak, disease resistance is reduced, and it is easy to rot. If you want to sow seeds, soak the liquid medicine, and spray carbendazim to prevent bacteria on the purchased seedlings, and then disinfect the seedling board, culture medium, and seedlings, first bask in the sun, and then spray chlorothalonil and other fungicides for disinfection. Remove the ills in time, and after the harvest, don't leave them in the ground, but clear the courtyard.

Reasonable fertilization, while using nitrogen, phosphorus and potassium, the initial nitrogen fertilizer should be controlled, do not let the plant grow, and do not use too much nitrogen and potassium, which affects the absorption of calcium, and can appropriately reduce nitrogen and potassium. Nitrogen fertilizer is reduced a lot in the late growth stage, but a large amount of potassium fertilizer is needed in the later stage, so it can be adjusted in the later stage, and a large amount of potassium fertilizer can be applied in the middle stage. Melons are generally planted on flat land, so they should be sparsely planted, not too dense, and if they are sparsely planted, the humidity in the field will be reduced, and there will be no space for the growth of germs.

Then it is necessary to apply fertilizer reasonably, and top dressing should be carried out according to the fertilizer characteristics of melons in each period, and it cannot be planted on land with insufficient fertilizer or barrenness. Melon rot melon is mainly caused by diseases, but some environmental factors are not coordinated, creating conditions for the growth and reproduction of pathogens.

Long-term low temperature and cloudy weather, abnormal weather is the main reason for the occurrence of melon rotten melon, insufficient lighting in the fruit period of melon, rain, fog, high temperature and low humidity are easy to cause poor plant growth, and melon is made after rotten melon. Melon seedlings are planted too densely, with poor ventilation and insufficient light. Nitrogen fertilizer is partially applied, foliar fertilizer is not sprayed, trace element supplementation is not paid attention to, root growth is not paid attention to, soil disinfection and seed disinfection treatment are not paid attention to.

After the seedlings are planted, the irrigation amount is adjusted, and the root growth is promoted by squatting at the right time. Proper water supply and fertilization after fruit set, foliar fertilizer can be sprayed with water to ensure adequate nutrients. After entering the puffing fruit machine, the main fertilizer is sprayed with Noplin foliar fertilizer to promote the expansion and sweet coloring of the melon.

Pay attention to the watering period and the amount of watering. Watering during flowering and pollination can easily cause disease. Under normal circumstances, when the melon grows to the size of a walnut or egg, it should be watered properly, and it should be ventilated in time after watering to maintain a low humidity environment in the shed and prevent bacterial infection.

1. Choose good breeds.

When planting, choose marketable and disease-resistant high-quality varieties.

2. Choose a good membrane.

Melon melon likes high temperature and light, and the best film should be used when using the film.

3. Balanced and reasonable fertilization.

Melon requires more potassium, nitrogen, and phosphorus fertilizers, and is more sensitive to calcium, magnesium, boron and other elements.

It may be because of the influence of some pests and diseases, so we should spray some pesticides to prevent pests and diseases, or we should spray some vinegar.

The impact of stagnant water on melons is louder or bigger, and the first thing to do is to prevent waterlogging when there is more rainfall, and the group is staring at the roots of melons to do a good job of drainage ditches, so that precipitation can be fully discharged.

In the rainy season, the first thing to do is to do a good job in the prevention of waterlogging, do a good job of drainage ditch at the root of the melon, in the period of too much rain, the precipitation can be fully discharged, the water has a great impact on the melon leakage after fruit set, it is easy to cause the melon fruit to grow and crack, serious in the environment of high temperature and high humidity, there will be yellowing of the leaves, the plant is sluggish, and the melon is also easy to cause root rot.

In the process of melon growth, we must pay attention to reasonable field management, but also pay attention to topping. In this way, a high yield of melons can be guaranteed.

Remove the top advantage, in fact, the mantra is: three leaves and one heart. When the melon seedlings grow to three leaves and one heart, we need to remove the top of the main vine.

Melons are multi-vine plants, but they do not need to be framed, most farmers will plant melons directly in the field, and the fruit of melons generally grows to the side vines, and the main vine only absorbs nutrients. If it is not managed, it will not be easy for the fruit to grow on the side vine, and the fruit will also fall due to nutritional problems.

Melons are climbing plants in the process of planting, not the main vines that bloom and bear fruit, so you should pay attention to this. There is also the fact that the three-leaf heart is not only done once, but after the side vine grows three leaves, we remove the heart again, so that the melon grows from a long vine to a long fruit.

What is the reason for this, melons do not have high requirements for soil in the process of growth, and when entering the long vine stage, the main vine is an important element that blocks the long vine.

The melon fruit ripens in June and July, but it is not ripe in large quantities, even if some of the fruit is ripe, there is still a phenomenon of flowering and fruiting, and some of the ripe fruit we need to pick to avoid too many fruits on the vine and cause cumbersome.

There is more rain in the south, and the climate is sometimes cold and hot, and this year some farmers have the phenomenon of internal rot of melons, which is actually the reason for the high temperature and more rain, so what can be done. After the fruit grows, we use some dry leaves to pave or cover the fruit, which can prevent internal rot, and there is cracked fruit, most of the reason for the appearance of cracked melon is lack of water, melon in the process of planting, although there is no requirement for soil, but the demand for water is still very large, so farmers need to add a lot of water to the formed melon in the process of planting, especially after the treatment of the main vine to remove this step.