What is the reason why red grapes do not fall after flowering?

The seedlings are not enough in small years, the water content is not well controlled, and the nitrogen fertilizer is large, and the phosphorus and potassium fertilizer are insufficient.

This is mainly related to the following reasons: boron deficiency is the direct cause of the inability to take off the grape flower cap. After grape boron deficiency, the pollen tube will not germinate and elongate normally, the flower cap cannot be removed, and the normal pollination and fertilization will not be possible in the later stage.

Boron deficiency symptoms can be exacerbated by dry weather or high water tables. The boron supplementation method and period are wrong, and the selection of boron fertilizer with poor safety in solid and granular dosage forms such as borax not only fails to play the role of boron supplementation, but also easily leads to boron poisoning, resulting in the difficulty of taking off the flower cap;

I chose the right boron fertilizer, but I can't replenish it too late. Therefore, it is necessary to pay attention to the following aspects: due to the low temperature and poor root vitality for a period of time after budding, it mainly relies on the nutrients stored by the branches for germination and plant growth, and the same is true for the boron that supplies the differentiation of grape flower buds.

This is the first critical period for boron supplementation. After grape bud budding - before flowering, it is the second critical period of boron supplementation, budding will be sprayed twice in a row micro boron supplement + micro fruit supplement, boron, phosphorus and zinc supplementation, not only can be efficient and safe boron supplementation, promote flower bud differentiation and flower cap removal, but also promote pollination fertilization, improve the later fruit setting rate. Boron supplementation to promote the removal of the hat must be done as soon as possible, and the flower hat can not be taken off or even dried up, and then supplementation is not very effective for the year.

After flowering - young fruit stage, although pollination and fertilization have been completed at this time, it is necessary to continue to supplement boron, because the development of young fruit peel requires a large amount of boron, it is recommended to spray two more micro-boron + micro-fruit supplementation after eighty percent of the flowering, improve the fruit setting rate, reduce fruit drop and fruit size, and promote fruit expansion.

Hello, June is the period of rapid expansion of young grapes of red grapes, the proportion of nitrogen, phosphorus and potassium in the expansion period of red grapes is: potassium can account for 50-60% of the total, phosphorus can account for 20-30%, nitrogen can account for 10-20% of the total, calcium can account for 10-20%, and it is also important to supplement some magnesium, zinc, boron, iron, copper, molybdenum trace elements and rare earth elements. Foliar sprays can be applied with a foliar fertilizer containing potassium as well as phosphorus, calcium and magnesium.

At the same time of fertilization, it is recommended to add some microbial agents for sea meals.

In addition, organosilicon can coordinate the balance of nitrogen and phosphorus, potassium and other elements in the plant, so that the plant grows steadily, prevents fruit cracking and sunburn, increases fruit powder, and enhances the plant's ability to fight diseases.

The expansion period of red grapes is in the late summer and early autumn of each year, at this time, in order to control the quantity and quality of fruits, we must reasonably carry out the work of thinning branches and fruits, and also do a good job of bagging. The details are as follows:

Swelling period and fertilization method of red grape.

Now is the time when the grapes are growing and should be properly maintained, so that they can grow more vigorously, and the taste and quality will be better.

After the red grape enters the fruit expansion stage, it should be properly applied with fertilizers such as high calcium and potassium fertilizers and trace elements. Generally speaking, using 5 to 10 kg of fertilizer per mu is sufficient.

When fertilizing, it is recommended that you carry out the method of flushing, take 5 kg of high calcium and potassium fertilizer with water and dilute it to a reasonable concentration, stir them fully, and then spray the red grapes every 7 10 days or so.

Comments: Reasonable fertilization of red grapes after entering the swelling period is more conducive to improving its quality and yield, at this time, when fertilizing it, nitrogen fertilizer should be reasonably used and the use of phosphorus and potassium fertilizer should be increased. In addition to this, to prevent it from falling fruit, we should also carry out fruit thinning and pruning.

When fertilizing red grapes, we should choose the fertilization method according to its growth, and in most cases, we will choose foliar spray or flush application.

The best time to use grape bulking agents.

In the process of grape planting, when the fruit enters the expansion period, it is necessary to apply expansion fertilizer to it reasonably, which is more conducive to fruit expansion. Generally speaking, grapes with seeds are generally used about half a month after the flowers are in full bloom, while seedless grapes should be used about a week after the flowers have withered.

The use of grape bulking agent is also very simple, as long as the bulking agent and water are diluted in proportion to use, generally speaking, every 10ml of bulking agent is mixed with 2 liters of water, and then the fruit ears are immersed in it, and soaked for about half a minute.

Many people say that whether grapes can be used or not is judged by the variety, but in fact it is not, it should be judged according to the condition of the grapes. For example, if the Kyoho grape itself has more fruit set and the panicle is tighter, it is not suitable to use a bulking agent, otherwise it is easy to cause extrusion, and after the fruit thinning treatment, it is enough to spray the bulking agent.

For grapes, the proper use of bulking agents in the planting process is more conducive to their growth. It should be noted that the duration of use of the bulking agent should be judged according to the growth of the grapes. Generally speaking, if the grapes have too much fruit set and the panicle is tighter, it is not suitable to spray the bulking agent, and it needs to be sprayed with a bulking agent after proper fruit thinning.

For grapes with poor fruit set, spraying bulking agents is more beneficial to increase yields.

In order to control the number of fruits in the ears and improve the quality of the berries, it is necessary to carry out vegetable ears and fruits to achieve the purpose of controlling grape yield, balancing the spike weight and standardizing the spike shape. The nutrients in each spike are as nutritious as possible, which promotes fruit expansion and coloration, increases sugar content, and improves quality. In addition, vegetable and fruit ears are also conducive to the nutrient accumulation of the tree body and promote the development and enrichment of branches.

In order to reduce the consumption of ineffective nutrients, it is better to thin the ears and vegetables and fruits as early as possible. In general, the amount of sprow will decrease for plants that have been thinned before fruit set, and the number of spikes can be estimated when the fruit setting of each fruiting branch can be clearly seen after the fruit is set (20 days after flowering). After thinning the panicle, when the fruit enters the hard core stage, the grain can distinguish the size of the grain.

Decide based on the affordability of the tree and the target yield. The affordability of the tree is related to the age, tree potential, soil fertility, and fertilizer application. If the affordability of the tree is strong, you can leave more fruit ears appropriately; For weak trees, young trees, old trees and other trees with weak affordability, less fruit ears should be left.

The specific method of thinning the ears is to have 1 spike of the middle fruit branch, 2 spikes of the strong branches, no spikes of the weak branches, and 5-6 spikes per square meter of shelf surface.

It is also an important measure to shape the ear, make the fruit spike uniform and improve the performance of the product by thinning the grain. When thinning grains, we should first thin out the deformed fruits, then thin the small fruits, diseased fruits, and scar fruits, and also thin the individual prominent large fruits. Then, according to the requirements of the panicle shape, cut off the overly dense branch shaft in the middle of the spike and the excessive fruit on each axle, and thin the fruit at the tip of the panicle.

60-80 grains are reserved for large fruit spikes, 50-60 grains are reserved for medium fruit spikes, and 30-40 grains are reserved for small fruit spikes.

If the rows are not mulched, they should be cultivated to a depth of 5-10 cm, depending on soil compaction and weed growth. Grass mulching can also be carried out to reduce ground temperature, reduce humidity evaporation, prevent slabting, and keep the soil loose. Weeds compete with grapes for water and fertilizer, and the growth of weeds should be inhibited to ensure the growth of branches and fruits.

The more weeds there are, the greater the adverse effect on the growth of the grapes. Therefore, it should be removed in time. The fruit growth period requires more nitrogen nutrients, and more phosphorus and potassium costs, so nitrogen, phosphorus, and potassium fertilizers should be used together.

Fertilization should be shallow into the soil or ditched on both sides of the tree row, and irrigation should be carried out in time after fertilization. After the fruit enters the hard core stage, spraying 3%-5% plant ash or potassium dihydrogen phosphate once every 10 days, and spraying 3-4 times in a row, has a significant effect on improving fruit quality and leaf anti-aging ability.

June is the period of rapid expansion of young grapes of red grapes, first, the bagging should be as early as possible. Before bagging, the whole garden is sprayed with a fungicide, such as 70% Lizhi (thiophanate-methyl) or 80% Jinnahai (Fumeishuang) or 10% Yushi (pentoconazole), focusing on spraying fruit ears, and the liquid can be bagged after drying. The second is to prevent and control pests and diseases, especially the harm of anthrax.

The third is to leave more leaves near the ear during summer pruning to cover the ear and prevent the harm of sunburn.

Red grapes go through 8 months of vegetative growth, then reproductive growth, and then the following year.

It is usually swelled in September.

Under normal circumstances, red grapes swell in June and can be picked and eaten in July.

Qibao is gibberellin on this kind of elongated ear, 1 gram of gibberellin mixed with water 1500-2500 times liquid evenly sprayed 5-10 cm of fruit easy to roll the ear Buy it back and read the instructions yourself But now it is useless to hit it after the flowering period.

After the hard core, in addition, I usually have to pay attention to management, and I won't be able to manage it if I don't manage it.

There are several factors that affect the differentiation of grape flower buds: 1Light:

Light includes light intensity, light quality, and photoperiod. Light is necessary for photosynthesis and is also the material basis for flowering. In low light, it will affect the differentiation of grape flower buds.

Dense branches, poor ventilation and light transmission, and rainproof cultivation conditions will have a certain impact on the formation of flower bud differentiation. 2.Temperature:

Temperatures that are too high or too low can affect the differentiation of the buds in the grapes. For example, in facility cultivation, if the germination period temperature exceeds 40, the flower buds formed in the previous year will "melt" due to the high temperature. 3.

Humidity, the flowering process of grapes is sensitive to soil moisture, and appropriate soil drought can slow down the vegetative growth, which is conducive to the accumulation of nutrients in the tree, so that the C-N ratio increases and improves the flowering.

Before grape germination, the soil should be supplemented with ferrous sulfate, and 50 to 100 grams per plant should be applied in the furrow or holeIf it is mixed with organic fertilizer, the effect is better.

Physiological diseases induced by iron deficiency. Iron can promote the activity of a variety of enzymes in plants, and when there is a lack of iron in the soil, it will affect the growth and development of plants and the formation of chlorophyll, forming iron deficiency yellow leaf disease, and the content of absorbable iron in the soil is insufficient.

Morphological characteristics

Red grapes are the trade name of the fruit, also known as the red earth, late red, the upper part of the young new shoots of the red grapes has purple-red stripes, the middle and lower parts are green and shivering, and the annual branches are light brown. The three young leaves at the tip of the tip are reddish, the leaf back has sparse villi, the adult leaf is five-lobed, the upper lobe is deep, the lower lobe is shallow, there are no villi on both sides of the front and back of the leaf, the leaf is thin, the leaf margin is serrated and pure, and the petiole is red or light red.

Young trees grow vigorously, tend to be moderate after fruiting, young trees are easy to grow green, branches mature late, after the branches mature, the internodes are short, the bud eyes are prominent, full, the fruiting branch rate is about 70%, and the fruiting coefficient is about 70%, and the fruiting coefficient.

There is a habit of secondary fruiting. In the Xingcheng area of Liaoning Province, the variety sprouts at the bottom of the hole in April, blooms in early to mid-June, ripens from the end of September to the beginning of October, and the fruit growth period is 100 days, and the maturity period is 135 days from budding to full maturity, which is slightly earlier than that of longan grapes.

The fruit spike is large, long conical, with an average spike weight of 650 grams, and a maximum panicle weight of 2500 grams. The fruit is round or oval, the average grain weight is 11 to 14 grams, the maximum can reach 23 grams, the better fruit can reach the size of a ping pong ball, the fruit is moderately tight, neat and uniform, the peel is medium thick, and the fruit is dark red.

The flesh is hard and crisp, the flesh color is slightly transparent white, representing its sugar content, can be cut into thin slices, sweet and delicious, pure flavor, soluble solids are smaller, knife cut without juice, and the quality is extremely high. The fruit stalk is long, tightly combined with the fruit, not easy to crack, the fruit brush is thick, the growth is extremely firm, the tensile resistance is very strong, no threshing, the fruit can be transported and stored for a long time, and can be stored until March of the following year.

Kiss your stupidity! The reasons are as follows: the first is the first of the blue state, and the variety problem.

Second, if the tree is too vigorous and grows, and at the same time, if the water and fertilizer are not properly controlled in early spring, the size of the grain will be particularly serious. Thirdly, if the grapes are in full bloom, if they encounter rain, the grapes will be pollinated poorly, and they are prone to large and small grains. Fourth, the grapes are sprayed in full bloom, pollination is poor, and large and small grains are formed.

Fifth, the tree is weak, and the nutrients cannot meet the needs of fruit expansion during the fruit formation period. In addition, when grapes are deficient in zinc, there will also be sparse ears, uneven grains and few seeds.

Summary. Hello, dear is happy to answer for you. The causes and solutions of grape grains are described as follows:

Grape grains Generally speaking, grapes produce flower grains mainly due to the following reasons: 1. Uncontrolled water management, excessive nitrogen fertilizer dosage, and excessive watering; 2. Unreasonable fertilization, excessive amount of chemical fertilizer, no attention to the application of organic fertilizer and medium and micro fertilizers, and unreasonable amount of topdressing before flowering; 3.The tip of the vine is broken early, and the leaves are few; The flower shelf is dense and the amount of branches is large, resulting in poor ventilation and light transmission during the flowering period, resulting in fruit drop during the flowering period, low fruit setting rate, and loose panicle.

The effective measures to control the flower grains mainly include the following points: 1. Water control; 2. Use secondary branch fruit; 3. Reasonably adjust the plant load; 4. Reasonable pruning; 5. Pinch the tip and break the vine; 6. twisting fruit branches; 7. Balanced nutrition and reasonable fertilization. Dear, I hope mine can help you, if you are satisfied with my service, please give a thumbs up, I wish you all the best!

Good. Hello, dear is happy to answer for you. The causes and solutions of grape grains are described as follows:

Generally speaking, the phenomenon of grape flower grains is mainly due to the following reasons: 1. Water management is out of control, too much nitrogen fertilizer is used, and too much watering; 2. The fertilization is unreasonable, the amount of chemical fertilizer is too large, the application of organic fertilizer and medium and micro fertilizer is not paid attention to, and the amount of topdressing before flowering is unreasonable; 3.The tip of the vine is broken early, and the leaves are few; The flower shelf is dense and the amount of branches is large, resulting in poor ventilation and light transmission during the flowering period, resulting in fruit drop during the flowering period, low fruit setting rate, and loose panicle.

The effective measures to control the flower grains mainly include the following points: 1. Water control; 2. Use secondary branch fruit; 3. Adjust the plant load in a reasonable banquet shed; 4. Reasonable pruning; 5. Pinch the tip and break the vine; 6. twisting fruit branches; 7. Balanced nutrition and reasonable fertilization. Dear, I hope mine can help you, if you are satisfied with my service, please give a thumbs up, I wish you all the best!