Key points: Container seedlings with proper size of mud ball shall be cultivated in the nursery; Ensure the integrity of the mud ball.
6、 The treatment of bark and root damage is usually assisted by crane or excavator when transplanting large trees.
2、 When raising seedlings, pay attention to protect the integrity of the mud ball from damage, pull up the thick roots as much as possible, and dig holes and fill soil to plant the roots during planting.
Because the quality of roots is the key to the survival of trees.
4、 Trees with taproots are easy to die.
Analysis reasons: 1 Due to environmental factors, most mountain seedlings have straight roots and grow downward by relying on one or more taproots for a long time.
Because the protection is easy to fall off, the bark or tree root may be damaged by steel wire rope or machinery if you are not careful.
The strapping must be meticulous and local spray can be carried out to improve air humidity.
It is very important to wrap the tree stems, branches and leaves, especially the heart leaves.
When the weather changes from cold to warm, don’t rush to remove the package to avoid frostbite in early spring..
It is wrapped tightly.
3、 Consciously push the tree rod with your hand to see if the mud ball is closely combined with the soil.
3、 Planting should be shallow, drainage and ventilation are better, because container seedlings are mostly placed on the ground during cultivation, with good ventilation and drainage around.
4、 Check whether the planting is too deep or the surface of the mud ball is covered with too much soil, so as to avoid suffocation and death of the root system.
3、 If the bark falls off completely, apply a patch to the wound and bind it with straw rope or hemp.
7、 Observe the upper part of the tree and whether the leaves curl, wither or fall off abnormally.
Due to high temperature and large volatilization of seedlings, the evaporation of aboveground part is not directly proportional to the supply of underground part, so the planting survival rate is low and the risk is high.
First, it can be sterilized.
Some large-scale seedlings, such as maple, have fewer seedlings in the nursery and more in hills and mountainous areas, so sometimes only mountain seedlings can be selected.
Key points: Prevention first; Timely handle and maintain.
Although some will not die, they will affect the growth potential of seedlings.
Key points: if there is a problem, dig a hole in time to see the root system.
In the actual construction, in order to improve the survival rate and other factors, seedlings will be trimmed, unless specially cultivated seedlings.
2、 Why planting mountain seedlings is easy to die? General construction personnel know that the survival rate of planting mountain seedlings is very low, but with the gradual reduction of large trees, especially individual large tree nurseries are difficult to find, so they have to use mountain seedlings.
Solution: 1 Half a year before transplantation, it is best to do a good job in root cutting and crown pruning.
Therefore, the bark should be protected from damage as much as possible, focusing on prevention.
However, sometimes due to the requirements of Party A or the total construction period, it is necessary to plant trees in high temperature in summer.
Solution: 1 Seedlings damaged by mud balls shall not be used as much as possible.
2、 When raising seedlings, pay attention to protect the integrity of the mud ball from damage, pull up the thick roots instead of cutting them off, so as to ensure the loss of water nutrients in the tree.
Solution: 1 It is recommended to select container seedlings, root cut seedlings or transplanted seedlings.
Because most mountain seedlings have straight roots, the main roots are often cut off during excavation, resulting in the loss of water nutrients and the reduction of root pressure, so that the roots can not absorb water nutrients in the soil in time, resulting in the death of seedlings.
Here, we hope that the construction personnel can pay attention to the inspection after construction, find and solve the problems as soon as possible, and improve the planting survival rate of seedlings.
8、 How to prevent frostbite of trees in winter? Due to different producing areas and habits, the low temperature tolerance of various seedlings is also different.
Brick cofferdam, etc.
Key points: Don’t cut off the thick root.
Key points: Planting depth; Good soil; Firm support; Whether bare roots are in 100% contact with soil; Good drainage.
3、 For non seasonal arbor planting, the construction unit knows that arbors are planted in summer.
Planting should pay attention to planting quality rather than quantity.
The bark is restored to its original form.
4、 Select plants with high survival rate and evergreen tree species.
5、 Check whether large trees are supported or firm.
If transplanted, there are few effective fibrous roots.
Key points: The close combination of soil and mud ball shall minimize the direct sunlight on the mud ball and leaves.
Solution: 1 Protective measures should be taken before entering winter.
3、 Generally, the growth environment on the mountain is good, with sufficient moisture, high humidity, good drainage and acidic soil, which is more suitable for seedling growth.
The traditional operation is to lift the tree rod with steel wire rope and protection, or lift the tree rod and mud ball at the same time.
It is repeatedly injected with tree stems into liquid soaking irrigation, and it is sterilized again by a sprayer once a week.
The mud balls should be covered conditionally to increase the ground temperature.
If so, timely use the digging method to check the root system, whether there is decay and to what extent, and then consider whether it can be saved.
If transplanted, the seedlings cannot adapt to the environment of the planting place in time.
2、 Ensure that the mud ball of container seedling is intact during transplantation.
Solution: 1 Understand the situation of seedlings, whether there are mountain seedlings, mud ball size, transportation time, planting season, etc.
4、 The soil on the mountain is mostly mixed with stones, so it is very difficult to dig seedlings and play mud balls.
3、 After planting, shade sheds, straw rope or linen pieces should be built around the bar, and local spray can be provided conditionally, so as to reduce the evaporation of water in trees.
2、 It is best to select the seedlings in the suburbs, raise the seedlings after the sun sets in the evening, transport them overnight, plant them with the secondary settlement method, support and fix them.
Key points: Do not cut off the thick root and increase the thickness of the mud ball.
Crane should be used instead of steel wire rope, and hemp and bamboo chips should be used to wrap the tree rod.
If transplanted, the taproot will be cut off, the water nutrients of the tree will be lost, the root pressure will be reduced, and the water nutrients in the soil will not be absorbed, resulting in death.
6、 Check the tree stems and branches for damage or improper pruning methods to avoid bacteria pouring into the tree from the wound and weakening the tree.
Solution: 1 Due to the damage of bark, the nutrient transport between cortex and xylem will be broken, which will affect the survival or growth of seedlings.
It is suggested to use the secondary settlement method for planting, the height of soil cover should be better to restore the original height of mud ball, and the diluted plant vitality root irrigation solution should be used for irrigation.
4、 If the tree root is damaged, trim the bad root first and seal it with wound patch to promote its healing and prevent nutrient loss.
3、 The soil of seedlings with damaged mud balls must be good, and the drainage of tree holes should be smooth, so as to create the best soil environment for promoting new roots after planting.
7、 Mud ball damage is a common problem in construction.
2、 The soil layer on the mountain is thin, and the survival competition among trees makes the roots of trees take root far away.
4、 Prune after planting, increase the amount of pruning, and seal the wound with wound patch.
It is injected with liquid from tree stems and then wrapped by straw rope or linen.
Southern plants are more vulnerable to freezing injury.
Solution: 1 The nursery cultivates container seedlings so that the seedlings can ensure their good growth through the nutrients in the container.
2、 If planting is necessary, the intact mud ball shall be kept as intact as possible during lifting and moving.
1、 How to check the survival of seedlings after arbor planting? Almost all construction personnel know that seedling problems should be found and handled in time, but many construction units often find them after the seedlings wither and die.
2、 For bark lump, it can be sterilized or partially shedding.
2、 Understand the earthwork, whether there is deep soil layer, pH value, soil compactness, whether there is ponding, etc.
In order to avoid the root loosening caused by strong wind and separation from the soil, resulting in the death of trees.
5、 Full crown and full leaf transplantation of big trees almost all Party A hopes that the planted trees can retain the full crown and full leaves without pruning, and can show good results after construction.
Due to mud ball damage, effective fibrous roots are damaged and root pressure is reduced, which can not absorb water nutrients in the soil and affect the survival rate.
4、 There are many forms of container seedlings, including plastic containers, planting bags and non-woven bags.
Solution: 1 Refer to mountain seedling transplantation.
