1.1 Planting time Trees are a living organism. Life activities have a great relationship with the climate. Generally, the most active life activities in summer and the weakest or almost dormant state in winter, generally the weakest time of tree life should be chosen for transplantation. It is most conducive to the survival of the trees.
It is suitable for planting in the spring in northern China. It is generally suitable for planting most deciduous trees and evergreen trees in the middle to late April and mid-April. In addition, because evergreen trees have a short period of dormancy during the high temperature period in summer, they can also be planted in the rainy season in July and August. The time should be chosen after the next two rains. In addition, some cold-tolerant and drought-tolerant trees such as Ginkgo biloba You can also choose to plant after falling leaves in autumn.
1.2 Fixed-point payouts Fixed-point payouts are the scope of on-site demarcation of greening and the location of seedlings planted and the distance between the rows of plants. Under conditional conditions, construction workers can carry out their own work according to the design map. If there are many obstacles underground, the pipelines are complicated, or The construction personnel have no fixed-point pay-out experience and may request the designer or the municipal surveyor to go to the site for the line-out and line inspection.
1.3 Digging the seedlings The quality of seedlings is the key to ensuring the survival of the trees. In order to increase the survival rate of the plant and achieve a satisfactory greening effect, strict selection of seedlings should be conducted before planting. (From:) The general criteria for the selection of nursery stocks are that they are robust, free from pests and diseases, and have no mechanical damage. The trees are well-ordered and their roots are well developed. After the seedlings are selected, they should be marked on them so as not to make mistakes when digging seedlings.
When digging seedlings, it is necessary to ensure that the seedling roots are intact. The root size of roots and shrubs should generally be based on the spacing of the excavation site and the height and diameter of the tree. In general, the arbor root system is about 10 times of the DBH of the tree; the shrub root system is about l/3 of the tree height.
When bare roots are raised, they should try to retain the larger root system and leave some soil. When the soil ball rises, the size of the soil ball should be determined according to the local climatic conditions and the survival ability of the seedlings. The hard-to-live seedlings should increase the size of the earth ball appropriately. When excavating, the soil ball should be kept intact and the packing should be tight. The bottom of the ball must not leak earth.
1.4 Transportation The seedlings should be roughly pruned prior to loading to reduce the water transpiration of the seedlings during transport. The shrubs can be loaded upright when loading the truck. The deciduous trees should be forward and the treetops should be arranged neatly. The soil ball seedlings with a diameter of 2m or less can be placed in a standing position. If the distance is more than 2m, the ball should be placed obliquely. The ball should be forward and the trunk should be backwards. . During the entire loading, unloading and transportation of seedlings, the roots, crowns, and soil balls of the trees should be kept intact. They should not break branches, scratch the bark, and damage the roots.
After the seedlings are transported to the site, they should be planted immediately. If they cannot be planted in time, the roots can be temporarily filled with soil. Can also be in the cool lee place for the planting, the seedlings yard width 1.5 ~ 2m, 0.4m deep ditch, fill the roots covering the roots, adequate water to maintain soil temperature, during planting should also pay attention to pest control.
1.5 Planting The planting hole shall be excavated at the determined planting position. The size of the pit shall be determined according to the specifications of the planting tree and the soil quality. When the soil quality is not good, the pit diameter shall be increased by 1 to 2 times. The general diameter of the pit shall be the root or soil of the tree. Ball diameter plus 20~30cm. The pit wall should be straight up and down, otherwise it is easy to cause the phenomenon of roots or filling. When the site soil is not good, it should be replaced with sand soil without impurities, and some base fertilizers with high fertilizer efficiency can also be applied at the bottom of the pit.
Seedlings and roots should be properly pruned before planting, so as to reduce water transpiration, ensure good tree posture, and facilitate tree survival. When pruning, care should be taken to maintain the natural tree shape. Generally, it is not appropriate to cut more, only to cut the broken branches, and to keep the cuts smooth.
Seedlings can be planted after being pruned. Bare roots and shrubs are usually planted by hand with the trunk being straightened into the pit. The other person fills the ready ground with the pit and fills it with half the palms to raise the seedlings. Flat with the ground, so that the roots are not easy to curl the roots, and then the soil is solid, continue to fill in good soil until slightly higher than the floor, and do a good job with water for soil. When planting soil ball trees, care should be taken to ensure that the depth of the pit is consistent with the height of the soil ball in order to avoid moving the earth ball back and forth. The dressing should be removed before filling and fully compacted after filling, but the earth ball should not be damaged.
It is suitable for planting in the spring in northern China. It is generally suitable for planting most deciduous trees and evergreen trees in the middle to late April and mid-April. In addition, because evergreen trees have a short period of dormancy during the high temperature period in summer, they can also be planted in the rainy season in July and August. The time should be chosen after the next two rains. In addition, some cold-tolerant and drought-tolerant trees such as Ginkgo biloba You can also choose to plant after falling leaves in autumn.
1.2 Fixed-point payouts Fixed-point payouts are the scope of on-site demarcation of greening and the location of seedlings planted and the distance between the rows of plants. Under conditional conditions, construction workers can carry out their own work according to the design map. If there are many obstacles underground, the pipelines are complicated, or The construction personnel have no fixed-point pay-out experience and may request the designer or the municipal surveyor to go to the site for the line-out and line inspection.
1.3 Digging the seedlings The quality of seedlings is the key to ensuring the survival of the trees. In order to increase the survival rate of the plant and achieve a satisfactory greening effect, strict selection of seedlings should be conducted before planting. (From:) The general criteria for the selection of nursery stocks are that they are robust, free from pests and diseases, and have no mechanical damage. The trees are well-ordered and their roots are well developed. After the seedlings are selected, they should be marked on them so as not to make mistakes when digging seedlings.
When digging seedlings, it is necessary to ensure that the seedling roots are intact. The root size of roots and shrubs should generally be based on the spacing of the excavation site and the height and diameter of the tree. In general, the arbor root system is about 10 times of the DBH of the tree; the shrub root system is about l/3 of the tree height.
When bare roots are raised, they should try to retain the larger root system and leave some soil. When the soil ball rises, the size of the soil ball should be determined according to the local climatic conditions and the survival ability of the seedlings. The hard-to-live seedlings should increase the size of the earth ball appropriately. When excavating, the soil ball should be kept intact and the packing should be tight. The bottom of the ball must not leak earth.
1.4 Transportation The seedlings should be roughly pruned prior to loading to reduce the water transpiration of the seedlings during transport. The shrubs can be loaded upright when loading the truck. The deciduous trees should be forward and the treetops should be arranged neatly. The soil ball seedlings with a diameter of 2m or less can be placed in a standing position. If the distance is more than 2m, the ball should be placed obliquely. The ball should be forward and the trunk should be backwards. . During the entire loading, unloading and transportation of seedlings, the roots, crowns, and soil balls of the trees should be kept intact. They should not break branches, scratch the bark, and damage the roots.
After the seedlings are transported to the site, they should be planted immediately. If they cannot be planted in time, the roots can be temporarily filled with soil. Can also be in the cool lee place for the planting, the seedlings yard width 1.5 ~ 2m, 0.4m deep ditch, fill the roots covering the roots, adequate water to maintain soil temperature, during planting should also pay attention to pest control.
1.5 Planting The planting hole shall be excavated at the determined planting position. The size of the pit shall be determined according to the specifications of the planting tree and the soil quality. When the soil quality is not good, the pit diameter shall be increased by 1 to 2 times. The general diameter of the pit shall be the root or soil of the tree. Ball diameter plus 20~30cm. The pit wall should be straight up and down, otherwise it is easy to cause the phenomenon of roots or filling. When the site soil is not good, it should be replaced with sand soil without impurities, and some base fertilizers with high fertilizer efficiency can also be applied at the bottom of the pit.
Seedlings and roots should be properly pruned before planting, so as to reduce water transpiration, ensure good tree posture, and facilitate tree survival. When pruning, care should be taken to maintain the natural tree shape. Generally, it is not appropriate to cut more, only to cut the broken branches, and to keep the cuts smooth.
Seedlings can be planted after being pruned. Bare roots and shrubs are usually planted by hand with the trunk being straightened into the pit. The other person fills the ready ground with the pit and fills it with half the palms to raise the seedlings. Flat with the ground, so that the roots are not easy to curl the roots, and then the soil is solid, continue to fill in good soil until slightly higher than the floor, and do a good job with water for soil. When planting soil ball trees, care should be taken to ensure that the depth of the pit is consistent with the height of the soil ball in order to avoid moving the earth ball back and forth. The dressing should be removed before filling and fully compacted after filling, but the earth ball should not be damaged.
Freeze-dried Fruit into powder will not affect its nutrition. Normally heat-sensitive substances are lost at high temperatures. For example: traditional high temperature drying technology. Freeze-drying technology and sun drying, drying, spray drying and so on are drying technologies, different drying methods have different effects on the quality of products. Freeze-drying method has less damage to the product. The traditional drying method is above 0℃, while the freeze-drying technology is simply understood to sublimate the moisture of fresh food under the vacuum and low temperature environment, and retain its original nutritional composition, appearance, size and other biological characteristics.
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