What types of seedlings are suitable for transplanting in summer

Under the current conditions, there is no season, just like the ginkgo tree, which is still being sent to all parts of the country.

The best time for seedling transplantation is the dormant period of seedlings, that is, from October to April of the following spring, and evergreen seedling species can also be transplanted during the growth period. Spring transplantsSpring transplants are dormant transplants. It is planted from September to April of the following year.

Survival rates are lowest in summer. Other months are second. In spring, the soil thawing and seedling germination were carried out before the transplantation, and the temperature required for the germination and growth of seedling roots was lower than that of the aboveground part, and the germination was earlier than that of the aboveground part.

In autumn and winter, from the beginning of the seedlings to the temperature not less than -15, although the tree body is in a dormant state, the underground part has not completely stopped physiological activities, and the root system that was cut off during transplantation can heal and recover, creating good conditions for budding and growth in the spring of the next year. In the severe cold north, it is necessary to strengthen the rhizosphere protection of transplanted large-sized seedlings in order to achieve the desired purpose.

The early germination moved first, the late germination moved later, the deciduous seedling species moved first, the evergreen seedling species moved later, the woody seedling species moved first, the perennial herbaceous moved later, the large seedlings moved first, and the small seedlings moved later.

Picking trees in summer can survive, but the survival rate is low, which is due to the high temperature causing a large amount of transpiration of branches and leaves, which affects the survival of trees. Therefore, in order to improve the survival rate of summer seedling planting, some necessary measures need to be taken, as follows:

First, the choice of planting seedlings

Because summer is not the planting season, the temperature is high, the evaporation is large, it is easy to cause plant dehydration, the requirements for planting plants themselves are higher, in the selection of materials to choose as far as possible to develop the root system, grow strong, no pests and diseases of the seedlings.

In the case that the specifications and forms meet the design requirements, the following principles should be followed:The first is to try to use small seedlings, small seedlings have stronger root generation than large seedlings, and the survival rate of transplanting is higher. Second, it is best to use seedlings with false planting, and seedlings with short planting time have more vigorous root activities; If there is no false planting seedling, the seedlings that have been transplanted in the past 2 years should be selected, such seedlings have many fibrous roots, the soil ball is not easy to break, the water absorption capacity is strong, and the survival rate of seedlings is higher.

In addition, it should be noted that large seedlings should be cut off and transplanted in advance.

2. Treatment and digging of planting soil

The summer planting soil must ensure sufficient thickness to ensure that the soil is fertile and loose, with good air permeability and drainage performance. For plots with harmful substances such as construction waste, the waste soil should be removed, replaced with good soil suitable for plant growth, and well-rotted organic fertilizer should be applied as base fertilizer. When planting seedlings in the summer, the size of the planting hole must meet the standard requirements.

3. Seedling raising and transportation

Seedling raising and transportation are the key links to ensure the survival of planting, and the control of soil ball quality and intermediate transportation speed is very important. The seedlings should pay attention to weather changes, generally choose to raise seedlings on cloudy days, transport to the site overnight, and ensure that the seedlings are fresh and the soil balls are intact and dense. When seedlings emerge, increase the size of soil balls to improve the survival rate.

Empty acres are recommended:The diameter of the soil ball is generally times that of normal season transplanting. The larger the soil ball, the more complete the root system is, and the easier it is to survive the planting.

Seedling transplantation should avoid hot and dry weather as much as possible, and seedling emergence should be arranged after 4 o'clock in the morning or afternoon to reduce the loss of seedling moisture. Anti-transpiration agent can be sprayed on the crown before seedling, and transported immediately after seedling. If the soil is loose and not easy to form balls, the roots can be dipped in mud immediately after seedlings rise to keep the root system moist.

Finally, when planting, rooting powder and a certain amount of phosphorus-based compound fertilizer can be put into the hole of large flowers and shrubs, and the soil can be filled to about 70%, and then filled to the level of the ground; And build a high l0 375px irrigation shed to lose water and soil, and water it can be watered thoroughly.

First of all, spring is the best time to transplant seedlings, but spring is also divided into early spring and late spring. Some seedlings germinate early, so they are suitable for transplantation in early spring, while others are a few days late. In fact, the specific operation depends on the local temperature and weather, which has a great impact on the transplantation time.

In short, spring transplanting is most advantageous a few days before the seedlings germinate (there are many reasons online). Of course, today's high-tech can be planted all year round as long as it does not freeze. For example, for some large trees, it is actually better to transplant them in autumn after they have fallen leaves than in spring, but this winter you should pay special attention to heat preservation.

Different seedlings have different living habits, so they cannot be generalized. Specific problems should be analyzed in detail.

It is generally said that it is better before the seedlings sprout.

There are three periods for seedling transplantation, which are spring, summer, and autumn. The most suitable time for transplantation is spring.

In principle, the transplantation of seedlings should be in the dormant period of the seedlings, generally in spring and autumn. Spring is the most suitable time for tree planting, because during this period, the tree is in the dormant period before germination, has not yet taken root and sprouted, and is slow to respond to environmental conditions such as temperature and humidity, with low physiological activity, and can withstand the changeable climate of hot and cold in early spring.

After planting, the temperature gradually stabilizes, the soil thaws, and the rain gradually increases, just in time for the trees to wake up and enter the good season for tree growth. If the buds open and then sprout, the survival rate will be reduced.

1.Spring transplanting.

It is generally carried out in spring before the soil thaws and seedlings germinate. The temperature required for the germination and growth of seedling roots was lower than that of the aboveground part, and the germination was earlier than that of the aboveground part.

2.Autumn transplanting.

In autumn, after the aboveground part of the seedling stops growing, the root system is transplanted while it is still growing. At this time, the aboveground part stops growing, consumes less nutrients, and the injured part of the root system after transplanting can heal and grow new roots before the soil freezes, so that the seedlings can survive. Transplanting in autumn should not be too late, otherwise the root system will stop growing, which is not conducive to the survival of seedlings.

After transplanting, it needs to be watered in time, and protective measures such as soil covering need to be taken before wintering to prevent seedlings from being damaged by frost.

3.Summer transplanting.

Generally, evergreen trees are better transplanted in summer when it is rainy, when the soil moisture is sufficient, the air humidity is large, it is easy to maintain the water balance of seedlings, and the survival rate is high.

1. Save seeds.

2. The seedling rate is relatively high.

3. Save maintenance costs and resources.

4. It is easy to set seedlings and select seedlings.

5. The survival rate of root regeneration and transplanting is also improved.

(1) Seedling age.

Seedling transplantation generally refers to the transplantation of one-year-old and more one-year-old seedlings. If the transplanted seedlings are too young, they are labor-intensive and ineffective; The seedlings are too large, the root system grows thick and long, and the seedling period is long after transplantation, and the effect is not ideal. The appropriate age for transplanting seedlings varies depending on the species.

Fast-growing tree species such as eucalyptus, when the seedlings are up to 6 10 cm high, they can be transplanted, transplanted in the same year, and released in the same year; Most broad-leaved tree species with fast growth rate and some coniferous tree species such as larch and oriental cypress can be transplanted when sowing seedlings annually; Slow-growing tree species such as Korean pine and fir are grown for 2 years in the sowing field, and spruce is grown for 2 to 3 years before transplanting.

2) Years of incubation after transplantation.

The time taken to cultivate seedlings for afforestation after each transplant varies depending on the tree species, climate, and soil conditions. Fast-growing tree species only take a few months, such as eucalyptus, larch, pine, arborvitae and other seedlings and broad-leaved seedlings are mostly 1 year; Slow-growing spruce and fir need to be cultivated for 2 years.

3) Number of transplants.

Seedlings for afforestation tree species can be transplanted once to be planted, some tree species such as spruce need to be transplanted twice, and large seedlings used in urban greening need to be transplanted many times before they can be planted.

4) Transplant season.

The transplanting season should depend on the characteristics of the tree species and the local climatic conditions. Tree species are transplanted mainly during the dormant period of seedlings, while evergreen species are transplanted during the growing season, preferably before the rainy season.

Spring is a suitable transplanting period for most tree species, and it is more suitable in the north after the soil thaws in early spring and before the seedlings germinate. However, the specific time of transplantation of different tree species should be arranged according to the early and late germination of tree species, and generally coniferous species are earlier than broad-leaved tree species.

Autumn transplantation is generally suitable for areas where there is no low temperature in winter and no cold, drought and other disasters in spring. For broad-leaved species, transplantation can begin when the seedling petiole forms a separation and the leaves can be shed or can be artificially shed. Evergreen species should be transplanted after the peak of diameter growth, as the root system has not stopped growing and there is a period of time after transplantation that is conducive to wound healing.

Autumn transplanting is the second peak of the year. However, when transplanting in autumn, often by the time the buds sprout in the spring of the following year, many trees have died unconsciously, and because the trees no longer sprout in autumn and winter, it is sometimes difficult to find the phenomenon of death, especially for some trees with rough bark and darker colors. So, how to improve the survival of tree transplanting in autumn has become a headache.

According to many years of experience in landscaping maintenance, it is summarized as follows:

1. Transplanting in autumn should first take into account the problem of cold winter. In many cases, trees transplanted in the fall could have survived, but many trees were frozen to death during the winter due to a cold winter that was not planted with the problem of frost in mind.

Precautionary measures: Transplant in autumn, choose hardy and native species.

Appropriate deepening of planting to avoid freezing of the roots with too thin soil layer.

The tree cavity can be covered with white mulch film to increase the ground temperature.

Wrap insulation, straw rope, white mulch, etc. around the trunk to protect against the cold.

2. For autumn transplanting, easy-to-root tree species should be considered. Due to the relatively short growth time of root elongation in autumn, the selection of trees with fast rooting speed can make the seedlings in close contact with the soil in a short period of time, and deeply rooted in the system, so that the trees can quickly get wound healing, and absorb certain nutrients and water from the soil** Seedlings survive and overwinter safely.

3. For autumn transplanting, the selection of maintenance drugs is very important. Transplanting in the fall focuses on promoting healthy root growth and avoiding bud germination. At present, there are many products on the market about rooting, but because most of the product formulas are set in accordance with spring transplanting, there is both root-promoting and bud-promoting effect, once we use such drugs in autumn, it is possible to give birth to new branches and buds, resulting in tree nutrient waste, reducing tree resistance, and the serious phenomenon of freezing to death in the later stage of new branches and buds, and it is difficult to germinate new branches and even die in the spring of the following year.

The "Happy Forest" rooting agent (Happy Forest Rooting Powder, Happy Forest Rooting Liquid) is based on the different growth needs of tree transplanting in each season of the year, and the product technical indicators will be adjusted to be more conducive to tree transplanting and survival.

From a practical point of view, no matter how you drop seedlings, transplant or plant, as long as you can remember to care about it often, you can generally live.

With the rapid development of modern urban greening construction, seedling transplantation is often required in summer. In order to improve the survival rate of summer seedling transplanting, a series of measures should be taken.

In many years of practical work, some experience has been gained from the selection of planting materials, soil treatment, transplantation construction and maintenance management

Because the climatic conditions in summer are very unsuitable for seedling transplantation, the temperature is high and the evaporation is large, which can easily cause plant dehydration. In this way, in the selection of materials, it is necessary to select seedlings that are vigorous and robust, have developed root systems, and are free of diseases and pests. For large seedlings, preparations should be taken before transplanting such as root breaking, and it is best to choose large seedlings in the nursery that have been transplanted.

Although the cost of such large seedlings is high, the seedlings have many fibrous roots, the soil ball is not easy to break, and the water absorption capacity is strong.

Many friends ask me when is the right time to transplant seedlings? Lao Yang shared his experience that different seedling transplanting methods and survival rates are different, and you need to choose the right method!