The magnolia tree falls off as soon as it grows and is planted for about 2 weeks?

First, the problem of moisture.

Potted magnolia sometimes has a sudden yellowing of the leaves, which is caused by overwatering and root rot. The way to improve it is to water in strict moderation. Watering must pay attention to the climate, plant size, branch and leaf growth and pot size and other conditions, the potting soil is not too dry, do not water, both to keep the potting soil moist, but also not to accumulate water.

Second, the problem of fertilization.

Under the condition of moist and loose potting soil, fertilize appropriately. After the plant is overwintered, apply 1 time of thick fertilizer to promote its rapid sprouts. When the flower buds of new shoots appear, apply 1 thin fertilizer to promote their flowering to be large and fragrant; Fertilization must be fully decomposed, and water-soluble fertilizer can be applied to vines. Otherwise, the flowers and trees will be "burned" by rotting insects after application, or the heat generated by fermentation will "burn to death".

Finally, it is necessary to prevent and control pests and diseases in time.

It could be a charcoal disease.

Bordeaux liquid can be sprayed.

Bordeaux liquor is an inorganic copper bactericide. It is a sky blue gelatinous suspension formulated from about 500 grams of copper sulfate, 500 grams of hydrated lime and 50 kilograms of water. The ingredient ratio can be appropriately increased or decreased as needed.

It is generally alkaline and has good adhesion properties, but it is suitable to be used for a long time or made of dehydrated Bordeaux powder, and then mixed with water when used.

The solution is a protective bactericide, which inhibits the spore germination or hyphal growth of pathogenic bacteria by releasing soluble copper ions. Under acidic conditions, when a large amount of copper ions are released, it can also coagulate the cell protoplasm of pathogenic bacteria and play a sterilizing role. In the case of high relative humidity and dew or water film on the leaf surface, the efficacy is better, but it is easy to cause pesticide damage to plants with poor copper tolerance.

It has a long effective period, and is widely used in the prevention and control of vegetables, fruit trees, cotton, linen, etc., and has a particularly good effect on downy mildew and charcoal disease, potato late blight and other leaf diseases.

Bordeaux liquor is a protective biocide. The active ingredient is basic copper sulfate, which can effectively prevent the germination of spores, prevent the infection of pathogens, and can promote the leaf color to be dark green, grow robustly, and improve the disease resistance of the tree. The preparation has the characteristics of wide bacteriological spectrum, long duration of effect, no resistance to pathogens, low toxicity to humans and animals, etc., and is a fungicide with the longest application history.

Bordeaux liquid itself does not have a bactericidal effect, and when it is sprayed on the surface of the plant, it is adsorbed on the surface of the crop due to its adhesive properties. In the process of metabolism, plants will secrete acidic liquid, coupled with the acidic substances secreted by bacteria when they invade plant cells, so that a small amount of basic copper sulfate in Bordeaux solution is converted into soluble copper sulfate, thereby producing a small amount of copper ions, which will coagulate the proteins in the cells after entering the bacterial cells. Copper ions can also destroy certain enzymes in their cells, thus preventing the normal metabolism in the bacterial body.

Under the influence of these two effects, the bacteria can die.

Prevention and control objects. To prevent and control early apple defoliation, charcoal disease, and ring pattern disease, you can start to spray lime doubling Bordeaux liquid 200 to 240 times after apple flowering, spray once every half month, and alternately use with other fungicides, a total of 3 to 4 times. To prevent and control apple rot disease (ring pattern disease, charcoal disease), you can spray lime doubling or multi-volume Bordeaux liquid 200 times 10 to 15 days before the appearance of diseased fruit in previous years, spray 1 time every 15 to 20 days, spray 3 to 4 times, and stop using 25 days before fruit picking.

To prevent and control apple mildew heart disease, 200 times of lime multiple-type Bordeaux solution should be sprayed at the beginning of the apple budding period. To prevent and control apple and pear rust, you can spray 160 times of lime equivalent Bordeaux liquid on the juniper cypress around the apple orchard. To prevent and control grape black disease, charcoal disease, and downy mildew, you can spray a small amount of lime Bordeaux liquid 160 times, spray 1 time every 12 to 15 days, a total of 2 to 4 times.

After the rainy season, Bordeaux liquid is used to control grape diseases.

If it is caused by alkaline soil, it can be mixed with humus and pine needle soil in the soil, and an appropriate amount of ferrous sulfate solution can also be watered. If it is caused by insufficient fertilization, you can give magnolia reasonable top dressing, top dressing phosphorus and potassium fertilizer.

Use some powdered fertilizer below, preferably cow dung as the main ingredient to ferment thoroughly, and pour water.

1. Moisture. Magnolia trees grow to be both afraid of drought and waterlogging, and if the soil is too dry, it will cause leaf rolls. Its roots are fleshy, and if it is too wet, the roots will rot and the leaves will turn yellow, so the amount of watering must be strictly controlled.

If you find that the soil is dry, you should water it in time and water it thoroughly.

Magnolia tree. 2. Soil.

When planting magnolia trees, it is necessary to choose loose soil, fertile and well-drained cultivation soil, which can be pine needle humus, coarse bran ash, coarse sand and ripe manure according to 5:2:2:

1 ratio for mixed preparation. Be careful not to use heavy clay soil and fine sand soil with poor air permeability.

3. Fertilizer. Magnolia trees prefer acidic soils, so they are not easy to cultivate in the north. It likes phosphate and potassium fertilizers, but the concentration must not be too high, otherwise the plant will wilt and may even burn to death.

Fertilization should be applied by tasting, sparse and evening, once every 5 days, so that the growth can be very robust. You can also apply some foliar fertilizer to increase the leaf color and promote the growth of the aboveground parts of the plant.

Hello dear! Here's the answer for you: The original land fierce zone that falls off as soon as the magnolia flowers bloom is due to the following (1) improper water management.

Magnolia flowers like to keep the soil moist, but can not accumulate water, the potting soil is too wet to cause root injury and leaf drop, flower drop. However, if there is not enough water in the pot, it is also easy to cause flower and leaf drop. Especially in the summer when the water demand is high, it is advisable to water once a day and spray the plants or the surroundings frequently.

2) Malnutrition. The flowering period of magnolia flowers is from spring to autumn, and usually flowers with a long flowering period need more fertilizer, so magnolia flowers in addition to adding organic matter or long-lasting chemical fertilizer as base fertilizer in the potting soil medium, it is best to supplement a thin liquid fertilizer once or two weeks during flowering to promote good flowering, especially in summer and autumn when the flowering period is in full bloom. If the leaves of the plant are light green or yellow, it may be due to insufficient fertilizer; However, if the branches and leaves grow well and the leaf color is extremely dark green, it may be that the nitrogen fertilizer is applied too much, which causes the branches and leaves to grow too much, and in this case, more phosphorus and potassium fertilizers need to be applied to improve.

3) Poor lighting. Magnolia flowers like sufficient sunshine, and when the light is insufficient, it is easy to cause weak and long branches, with few flowers or easy to fall and light aroma. If so, move it to a well-lit place.

Summary. Magnolia, is the first leaf flowering plant, which means first flowering and then long leaves, magnolia flowers do not bloom directly leaves can only explain three problems, the first is, your magnolia has not yet reached the age of flowering, secondly, this is not a magnolia flower at all, there is also a possibility that your tree is a lotus magnolia (magnolia), because the flowering period of magnolia is now that is, early spring, and the flowering period of lotus magnolia is in summer, and lotus magnolia does not lose leaves all year round. Compared with magnolias, lotus magnolia flowers are larger, more beautiful and more fragrant.

Magnolia, is the first leaf flowering plant, which means first flowering and then long leaves, magnolia flowers do not bloom directly leaves can only explain three problems and relatives, the first is, your magnolia has not yet reached the age of flowering, secondly, this is not a magnolia flower at all, there is also a possibility that your tree is the lotus jade Zhaoling orchid (wide magnolia shed late), because the flowering period of magnolia is now that is, early spring, and the flowering period of lotus magnolia is in summer, and lotus magnolia does not lose leaves all year round. Compared with magnolias, lotus magnolia flowers are larger, more beautiful and more fragrant.

This magnolia tree of mine bloomed last year and the year before that, but it didn't bloom this year.

The impact of changes in the weather is relevant.

1.The amount of water is too large, and although it likes a humid environment, it is not waterlogged. 2.

If it is in a waterlogged environment for a long time, it will hinder the respiration of the root system and will easily wilt. 3.It is necessary to reduce the amount of watering and drain water in time during the rainy season.

4.It may also be improper fertilization, and fertilizer needs to be supplemented in the peak growth season, but Xunshenyuan should control the amount of fertilizer and the concentration of fertilizer. 5.

It is recommended to stop the fertilizer in time and rinse off the fertilizer with more water.

There are times when it is not properly managed in the summer. Nitrogen deficiency old leaves first begin to turn yellow, and then gradually turn yellow from the bottom up, timely supplement from the roots or leaves urea, ammonium bicarbonate, ammonium sulfate and other nitrogen fertilizers, or import high nitrogen water-soluble fertilizers, can promote the leaves to turn green.

Phosphorus deficiency, the whole plant will turn dark green, and no luster, the leaves will also turn yellow, timely supplement of superphosphate and other phosphorus fertilizers, can promote the leaf to restore luster. Potassium deficiency tablets will be uneven, and the edge of the leaves may also appear yellow and withered, timely supplementation of plant ash, potassium sulfate or powder potassium dihydrogen phosphate and other potassium fertilizers can alleviate the symptoms.

Iron deficiency, young leaves and old leaves appear yellowing at the same time, the mesophyll of young leaves turns yellow, the leaf veins are green, forming a network of yellow leaves, generally watering ferrous sulfate, but the concentration should not be too large, can be applied in stages, to avoid burning roots. Calcium deficiency, young leaves turn yellow and curl, can be applied to crushed egg shells or Ribery Yanwo imported chelated calcium and magnesium fertilizer to reduce the harm. Magnesium deficiency, the leaves turn green and yellow, and finally dry up and die, and calcium magnesium phosphate fertilizer and magnesium sulfate fertilizer are applied in time.

Lack of sulfur, yellowing of leaf veins, timely application of ammonium sulfate, etc., to promote the leaves to turn green.

Magnolia trees have leaves.

Magnolia trees can reach a height of 2 m, the crown is wide ovate, the young branches and buds have gray-yellow long silk hairs, the leaves are obovate oblong-oval, and the back of the leaves is pubescent when young.

Magnolia tree, the leaves are alternate sometimes spiral-shaped, wide obovate to obovate, 10-18 cm long, 6-12 cm wide, the apex is round and wide, flat or slightly concave, with a short protrusion, so it is also called convex magnolia; Narrowing wedge-shaped below the middle, full margin. Magnolia leaves usually have supporting leaves or appendages at the base, and there are two kinds of supporting leaves, and the supporting leaves at the end of the branch end are attached to the young stem and separated from the petioles, and are covered with tiles; The leaves are scattered, brick-shaped, sticking to both sides of the base of the petioles, the buds are elongated, the leaves are falling off, and the ring-shaped leaf scars remain on the young branches, which is the identification feature of Magnoliaceae species.

There are no leaves in winter, but there are leaves in spring, summer and autumn.

All living plants have leaves, and the magnolia you are talking about is the one that blooms and grows leaves.