The jujube tree has already lost its leaves early, what are the remedial measures?

The jujube tree has already lost its leaves early, and the climate should be too large, and it will be late autumn soon, so it is a normal phenomenon, so don't be too nervous!

Now you can loosen the soil at the root of the jujube tree and apply fertilizer to it to ensure that there is enough fertilizer for the next year and wait for a good harvest!

Jujube tree defoliation control measures.

1. Strengthen cultivation management and strengthen trees to prevent diseasesThe main thing is to increase fertilizer water to ensure the robustness of the tree body and branches, improve the disease resistance of leaves, and delay or reduce leaf fall; Reasonable pruning allows the canopy to be ventilated and light-transmitting, creating environmental conditions that are not conducive to the occurrence of diseases.

2. Pharmaceutical prevention and controlTimely spraying is an important measure for the prevention and control of early defoliation, generally should be sprayed once in late May, mid-June and early July, and the fungicide can be used with 28% disease killing 800 times. Foliar fertilization can be supplemented with multi-micronutrient fertilizers.

Conclusion: In the prevention and control of diseases, on the one hand, we should pay attention to the reasonable cooperation of various measures, and cannot overly unilaterally emphasize a certain measure, on the other hand, the key to pesticide control is the time of the first use, so we should pay close attention to the initial period of local pests and diseases over the years. In addition, spraying should also be meticulous, uniform and thoughtful.

The early defoliation of the jujube tree may be due to insect disease and need to be sprayed with insecticides, or due to the lack of water or nutrients of the fruit tree, it needs to be watered and fertilized.

There is no remedy but to wait for next year to protect it.

1. Early application of basal fertilizerBasal fertilizer should be applied before freezing, the sooner the better. Fertilizers are mainly high-quality farmhouse fertilizers, such as well-rotted chicken manure, pig manure, sheep manure, etc., supplemented by phosphate fertilizers and compound fertilizers. If the organic fertilizer is insufficient, the humic acid compound fertilizer or bio-organic compound fertilizer with quality assurance can be applied.

Specific fertilizer amount: more than 5000kg of high-quality farmhouse fertilizer per orchard in the peak fruit period; Below this standard, the application of bio-organic compound fertilizer or humic acid fertilizer is increased, and about 300kg of special compound fertilizer for hail grip fruit trees and about 10kg of trace element fertilizer are applied. 2. Clear the orchard in time to remove fallen leaves, diseased fruits, weeds, residual branches and other bright states, burn or bury deeply.

After the garden is cleared, the whole tree is sprayed with strong wheel pattern net, Fuxing or stone sulfur mixture once or twice to disinfect and sterilize. 3. The trunk is whitened in the early deciduous trees, the tree body stores less nutrients, and is easy to suffer from frost damage, so it needs to be whitened to reduce the occurrence of sunburn and frost damage, and can also kill some of the excitation bacteria and pests that overwinter in the cracks of the bark. The main material of the whitening agent is stone sulfur mixture, and the auxiliary material is quicklime, table salt, lard or other animal oil.

Configuration ratio: 1kg of stone sulfur mixture, 3kg of quicklime, 0 salt5kg, hot lard 0

25kg

Winter pruning. Jujube trees must be pruned after they lose their leaves in winter. By pruning, the trunk branches are evenly distributed and the canopy.

Well ventilated. When harvesting in winter, the extension of the main trunk branches at all levels should be retained, and the flatness of the felling mouth should be paid attention to without harming the tree body. Branches with no or very low bearing capacity should be cut and crossed, dense, overlapping and weak branches should be removed to facilitate ventilation and lighting.

The cutting length can be determined according to the size of the growing branches, and the bone stem branches can be cultivated for the perennial growing branches with large space and cultivation prospects.

Foliar fertilizer was applied immediately after fruit picking, and the nutrient deficiency caused by the obvious reduction of fertilizer absorbed by the root system of jujube trees was supplemented in time, so as to avoid early maturity and defoliation, improve the photosynthetic efficiency in the later stage, and make jujube trees accumulate more photosynthetic products. If it is only transplanting or raising seedlings, watering after planting, the soil around the roots can be covered with a film to prevent water loss, and transplanting with flower buds.

When the seedlings are large, more attention should be paid to fertilizer and water management, remove the flower buds, and cut off half of the leaves, which is conducive to the reflux of nutrients to the root system and survive as soon as possible. In particular, it should be pointed out that when the jujube tree enters the defoliation stage, the yellow leaves are a normal phenomenon, and organic fertilizer can be appropriately added, and the plastic pruning can be carried out in time for 2-3 months.

If no basal fertilizer is applied or less basal fertilizer is applied, it is easy to cause nutrient deficiencies in tree storage. In the second year, the jujube tree germinated late, irregularly, had poor flower bud differentiation and low fruit setting rate. Before the jujube tree germinates, if there is too much fertilizer and water, there will be a large number of jujube hair germination, which will not only increase the amount of buds, but also waste more tree nutrients and affect the subsequent flower bud differentiation.

We should also be in the flowering period of the jujube tree, if the amount of water and fertilizer is too large, resulting in excessive vegetative growth, which will affect the flowering of the jujube tree.

If it is just transplanting or raising seedlings, watering after planting, the soil around the roots can be covered with film to prevent water loss, and more attention should be paid to fertilizer and water management when transplanting large seedlings with flower buds, remove flower buds, and cut off half of the leaves, which is conducive to nutrient reflux to the root system and early survival. Malnutrition.

Nutrient absorption is blocked, leaving the leaves in a state of fertilizer deficiency.

It is necessary to strengthen management, to water and fertilize in time, to ensure soil fertility, but also to ensure light time and temperature, to prune branches and leaves regularly, and to use pesticides and herbicides, so that crop yields can be increased.

Fertilization should be applied as soon as possible after defoliation and before the soil freezes. Remove dry shoots and diseased branches. The saw edge should be sawn to the live branch. The saw edge should be smeared with lacquer, which can effectively prevent the branches from continuing to dry out and rot.

Jujube trees generally lose their leaves around October-November. Jujube trees can grow freely in winter and do not require additional protection. The land needs to be leveled so that it can be productive in the coming year.

Pruning should be chosen, top dressing is also required, and more watering of the soil is required, because this is the only way to prevent water loss.

The jujube tree was bought from a nursery, two meters tall and finger-thick, and was originally planted in a flower pot. When they bought it, they brought flower buds with them, and they bloomed soon after they were planted in the yard, but not a single fruit was on the throne. Recently, I found that the tips of many leaves have dried up about 3 mm in length, and no new leaves are growing, so I would like to ask you what the reason is.

In addition, there is another very important phenomenon worth talking about, I planted the jujube kernel I gnawed in a small pot and also came out of a small jujube sapling, which is only more than an inch tall and has five or six leaves, but it also has the same problem of dry leaf tips.

Two jujube trees have the same problem, is it because the water or soil is not good? According to the information on the Internet, jujube trees are particularly tolerant to extreme conditions, with almost no requirements for soil quality, no requirements for soil acidity and alkalinity, drought and waterlogging resistance, and it should not be so fragile. The soil here feels like a mix of sand, loam, and clay, and there isn't much organic matter.

How to treat a large number of fallen leaves of jujube trees, strengthen cultivation management, and strengthen trees to prevent diseases. The main thing is to increase fertilizer water to ensure the robustness of the tree body and branches, improve the disease resistance of leaves, and delay or reduce leaf fall; Reasonable pruning allows the canopy to be ventilated and light-transmitting, creating environmental conditions that are not conducive to the occurrence of diseases. Timely spraying fungicides, insecticides and pesticides is an important measure to prevent and control early defoliation, and multi-trace element fertilizers can be used for foliar fertilizer.

Increase fertilizer water, reasonable pruning, and recommend agent control.

Jujube tree jujube is not mature when the leaves fall because of insufficient nutrients, because the jujube tree flowering, fruit setting period is the stage that needs the most nutrients, jujube trees can only rely on the organic nutrients produced by the leaves after flowering, if you do not supplement foliar fertilizer, it will cause a lack of nutrients, resulting in the fall of the jujube tree, should be topdressed in time, before and after the annual fruit picking into the base fertilizer, before and after flowering to spray foliar fertilizer in time, mainly nitrogen fertilizer, to promote its growth.

Introduction of the jujube tree

Jujube tree is a rhamnoaceae jujube plant, deciduous small tree, up to more than 10 meters, brown or gray-brown bark, growing in the mountains, hills or plains below 1700 meters above sea level, hail dust Kai native to China, Asia, Europe and the Americas are often cultivated.

The fruit of the jujube tree is rich in nutrients, in addition to fresh food, it can often be made into candied dates, red dates, smoked dates, black dates, wine dates, tooth dates and other candied fruits and preserved fruits, and can also be made into jujube paste, jujube noodles, jujube wine, jujube vinegar, etc., which are raw materials for the food industry.

Jujube tree belongs to the temperature-loving fruit tree, the temperature of flowering and fruit setting is 22 25, the temperature of fruit ripening period is 18 22, drought tolerance and waterlogging tolerance are strong, but the flowering period requires higher air humidity, otherwise it is not conducive to pollination and fruit collection.

Insufficient nutrients: Jujube trees will consume a lot of nutrients during the fruiting period, and if the source is not nutritious, leaves will fall. Red Spider:

Spider mites inhibit leaf photosynthesis, causing them to turn yellow and fall off. Spot disease: spraying with 30% copper oxychloride agent for prevention and control at the initial stage.

Maintenance method: Apply potassium dihydrogen phosphate at the fruit-bearing stage to improve fruit quality.

1. Insufficient nutrients

Jujube trees will consume a large amount of Fengqing nutrients in the fruiting period, and the nutrients in the leaves will also be provided to the fruit, and once the nutrients are insufficient, the leaves will appear premature aging, defoliation and other phenomena, if not fertilized in time, the leaves will fall off on a large scale, so it is necessary to apply sufficient fertilizer before harvesting, and apply potassium dihydrogen phosphate once a week.

2. Red spider

After the jujube tree is attacked by red spider, the leaves will lose green and gradually spread, red spiders will inhibit the leaves for photosynthesis, and finally cause the leaves to wither and fall, and they should be prevented and controlled as soon as possible after discovery, and 40% dicofol emulsifiable concentrate can be sprayed.

3. Spot disease

Spot disease is also called perforation disease, brown spot disease, etc., mainly harming plant leaves, after the infection of jujube trees, the initial leaves will appear round brown spots, and then expand with time, the late infection of the disease spots converge, resulting in leaf wilting, falling, the initial symptoms can be sprayed with 30% copper oxychloride agent for prevention, sprayed every 7-8 days, 3-4 times in a row.

4. Maintenance method

Jujube trees have certain requirements for soil, hail base wax planting to choose fertile, loose, strong drainage capacity of the plot, during the growth period, apply organic liquid fertilizer and urea to supplement the nutrients required by jujube trees, to the fruit-bearing stage, then change to apply potassium dihydrogen phosphate to improve the quality of fruits.

Jujube tree is the beginning of green buds in May every year, leaves, and then jujube flowers, jujube is not as big as other fruit trees, it is a small flower, the flower is small but the fruit is red and sweet, there is a role of nourishing blood and vitamins. Jujube trees need sufficient water during the growth period, especially during flowering and fruit development, so be sure to irrigate them well. August is the fruit expansion period, so in early August, you should chase another fertilizer.

This time, nitrogen, phosphorus, and potassium-rich compound fertilizers were used, and the dosage of each 5-year-old tree was 1000 grams.

<> summer pruning is conducive to the fruiting of jujube heads in the current year, so that the fruiting area is expanded, nutrient consumption is reduced, and the yield is increased. The second is not to apply bottom fertilizer, and then top dressing after catching the fruit, and carry out a bombardment project. The third is phased fertilization, the method is correct, but the fertilization varieties are too single, most of them are based on nitrogen fertilizer, and the vegetarian supply is not for meat, and it is <>

In summer, the jujube tree should be pruned The young shoots extracted from the jujube tree should be pruned off when it is not lignified Adjust the distribution of nutrients through pruning Reduce flower and fruit drop Pruning excess branches can make the tree light and ventilation effect better Give it a better growth environment can improve the fruiting rate of the jujube tree, and the main pruning work includes topping, bud wiping, and combing branches. In June, all the current year's jujube trees should be topped, so as to control the growth of the jujube tree and promote its second branching, and the topping should be carried out according to the direction of the branches and leaves.

Foliar fertilizer spraying during the flowering period (late May to late June) spray borax once at a concentration of 10 to 15ppm can also be sprayed with gibberellin solution, which can improve the fruit setting rate. From early July to late August, spray potassium dihydrogen phosphate solution or other foliar fertilizer every 15 days to create a protective row. After planting, the tree furrow should be done in time, that is, along the jujube tree row to both sides, the width of the furrow is 1 meter, the width of the mounds is 30 cm, the height is 20 cm, and it is required to be steadfast.

Doing a good job of tree furrows is not only convenient for the management of jujube trees, such as cultivating, watering, and weeding.

Fruit thinning: timely fruit thinning to reduce physiological fruit drop. The time for fruit thinning is generally carried out in late June. The method is to hang 1 fruit for 1 jujube in young trees, 1 fruit for every 2 jujubes in medium trees, and 1 fruit for every 3 jujubes in weak trees.

During the young fruiting period of jujube trees, we should pay attention to field management, water the jujube trees more, and then ensure sufficient light.

Weeding should be carried out so that the jujube tree can grow taller.