Analysis of Causes of Tree Transplant Death

Transplanting trees is one of the main means of garden greening in cities and towns. The role of transplanting large trees in the current landscaping of cities and towns is becoming more and more important and plays an increasingly important role. In landscaping, the effectiveness of transplanting trees is fast, and the advantages of being hard to be vandalized have been recognized by various parties. However, the transplanting of trees also has the risk of survival. The transplanting of large trees causes death due to various reasons. The reasons for the death of trees transplanted in urban greening are now discussed. Xining is a political and cultural center of Qinghai Province. In recent years, with the high attention of the municipal government, the level of landscaping has been increasing year by year. By the end of 2006, the urban green coverage rate reached 34.5%, and the per capita public green area was 7.38. The square meter, which ranks in the forefront of the northwestern provinces, has played a decisive role in the landscaping. Since 2002, the tree transplants have been carried out in parks and units such as the Haihu Road and the peninsula’s homeland in Xining City. More than 1,000 trees including Qinghai spruce, Chinese pine, Weeping Willow, Weeping Willow, Poplar, and Clove have been transplanted. The tree age is 30. For ~50 years, the tree height is 5 to 10 meters, and the survival rate after transplantation is not ideal. Through continuous practice in transplanting, the experience of transplanting large trees has been accumulated, and the main reasons for the death of transplanting trees have been summarized as follows:

First, the protective measures for transplanting trees were not thorough, and the root system was seriously damaged. When the trees were dug at the site, in order to facilitate transportation and reduce the labor intensity of the excavation, a large number of young roots were damaged, the roots were cut off, resulting in incomplete root systems, which reduced the absorption capacity of the root system. At the same time, during the transportation process, Due to the lack of protective measures for the aboveground parts, the bark of some trees also suffered extensive damage, resulting in rot of the bark, giving rise to opportunities for pests, and at the same time reducing the effect of bark transport of nutrients and moisture. 2. After the trees were dug, the roots were not timely packed and filled with soil. After they were transported to their destinations, they were not planted in time. This made it easy to cause water loss in the roots of the trees in the windy and dry spring, which affected the transplanting. Survival rate.

II. Unfavorable soil conditions in transplanting sites Before the greening of urban gardens, most of them were newly built roads or construction sites. There was a large amount of construction waste mixed with soil. Most of them were raw soil, with poor structure, scarcity of nutrients, and difficulty in roots. Affected the growth and survival rate of trees after transplanting.

Third, transplanting technology is not standardized 1. The seasonal greening of towns and cities is strong, and the time is tight. Due to the lack of technical management personnel, lack of effective supervision on transplanting sites, poor awareness of the quality of personnel for specific operations, and non-standard planting, affect the survival rate of transplanting. In addition, after the trees were transplanted from the original planting site, no reasonable corrections were made. For example, heading, pruning and rooting, etc. caused the water in the trees to lose balance, which affected the germination of the roots and aboveground parts. 2. The soil in the planting hole is not treated. Most of the urban landscaping land is the original construction site. There is a large amount of construction waste mixed in the soil. Soil nutrient content is low, and the root system is difficult to grow and grow, which affects the survival of the trees.

Fourth, management and protection measures are not perfect 1. Irrigation is not timely. After transplanting, they did not water the plant in time or only drank water once. However, there was no watering. Due to the windy and dry weather in the highland area in spring, the water in the tree body was easy to evaporate. 2. The transplanted trees did not have a protective frame. Due to the large winds in the spring, the trees are easily blown by the wind after watering, which affects the growth and development of the root system. Some trees are exposed after the roots are skewed, resulting in death. 3. Trees are affected by pests and diseases. Some trees have been harmed by pests and diseases at the original site of growth when they were transplanted, and they have not been treated during transplantation. When some trees were excavated and excavated, the roots and ground parts were damaged by humans and infected with diseases and insect pests. The trees needed to be cultivated after transplantation, and the ability to resist diseases and insect pests was weak, affecting the survival rate. In short, the survival of transplanting trees is affected by water, soil, technology, and human factors. Only by following the principle of adapting to local conditions and suitable land and trees, careful management can ensure that the transplanted trees are deeply rooted, full of vitality, and meet the growing needs of urban landscape construction.

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