When is the best time to plant trees in the north?
In temperate regions with four distinct seasons, the dormancy period from autumn and winter defoliation to spring germination is generally the best. For most areas and most green trees, late autumn and early spring are the best. Late autumn refers to the period from defoliation to soil freezing; Early spring means that the soil has just begun to thaw, but the branches have not yet begun to sprout. Generally speaking, Yichun is planted in cold areas in winter, and the local trees are not hardy; Tree species in warmer areas in winter and local cold tolerance are suitable for autumn planting. Local trees with strong cold resistance can also be planted in winter. If summer is rainy season, you can plant it, but you must choose trees with long spring shoots, and do it in rainy days, or take other measures to reduce water (such as shading and spraying water) to ensure survival. As for the planting season in specific areas, it should be based on the local climate characteristics, tree species and task size, as well as technical strength (labor, mechanical conditions, etc. As for the planting of trees in the landscaping project, it is not determined by the season. Planting trees in greening projects has its particularity. Planting trees in general landscaping projects depends on the weather, construction period (contract period), manpower, construction environment and traffic. It may be planted in a season that is not suitable for planting, so the survival rate of planting will decrease and the labor cost will increase. Landscaping project is best to plant trees in a more suitable season or period, except special ones!
When is the knowledge about planting trees?
Method of planting trees in spring: Spring is the golden season for planting trees. How to improve the survival rate of planting trees in spring should grasp the following points: 1. In the early spring of planting time, the soil moisture is relatively good, and the ground temperature gradually rises. After sowing the seedlings, the roots germinate and the survival rate of planting is high, and then become dry with the increase of temperature. So planting trees in spring should be sooner rather than later. At present, "top pulp" afforestation is advocated, and pits can be dug and planted from the beginning of March. Second, the choice of tree species When choosing afforestation tree species, we must adhere to the principle of suitable land and suitable trees, and choose tree species suitable for soil growth conditions in various places. Strive to achieve fast growth, early maturity and pest resistance after planting, and generally become a forest in 6 ~ 7 years. Third, the quality of seedlings directly affects the survival rate of afforestation. Therefore, when selecting seedlings, we must do the following: First, select seedlings with strong growth, full lignification, no pests and diseases, and uniform specifications; Second, the seedlings should have large soil balls, complete roots, many fibrous roots and regular taproot fracture; Third, it is best to have seedlings with DBH above 3 cm and height above 3.5 meters. Four, planting technology 1. Seedling treatment In order to improve the survival rate of planting, before planting, the lateral branches of seedlings should be cut off, all the lateral branches on seedlings should be cut off, leaving 2 ~ 3 buds and removing competitive branches; Second, we should soak the seedlings, dip them in water-retaining agent or ABT rooting powder and plant them with it. Soak the seedlings that can't be planted in time, avoid drying and blowing seedlings, especially the seedlings that have been transported for a long time, and must be soaked for 24 hours. 2. The excavation specification requires digging a planting pit with a length, a width and a height of 80 cm square. For the soil with bounded stone layer, the boundary stone layer must be broken when digging a pit to avoid the phenomenon of dry top of the tree. 3. Planting depth The planting depth should be 2~3 cm higher than the original soil standard of the seedling root. For deep planting under drought conditions, the soil moisture and viscosity can be slightly shallow. 4. Planting method When planting, the planting technology of "three burying, two steps and one seedling raising" is adopted, highlighting "three big and one solid", that is, big pit, big seedling, big water and compaction. That is, put the seedlings in the center into the pit and spread the roots. When filling the soil, it is best to apply organic fertilizer mixed with a small amount of quick-acting bacterial fertilizer at the bottom of the pit and then mix it with the topsoil (generally, the quick-acting bacterial fertilizer is applied per mu 100- 150g). When the soil is about 2/3 filled, lift the seedlings slightly upward. First, make the roots of the seedlings face down. Second, make the seedlings reach the depth needed for planting, and then step on them. Then fill the soil until the pit is full before stepping on it. Finally, foot water is poured to cover the pit surface with a layer of loose soil to prevent soil moisture from evaporating. V. Management and protection work 1. Watering in time According to the weather and soil moisture, newly planted young trees should be watered in time. Generally, newly planted young trees should be watered more than 6 times before wheat harvest in the first year. And check whether there is lodging, inclination or root exposure at any time. If found, it should be righted immediately and filled with soil. 2. Pay attention to insect prevention. After planting, in order to prevent trees from being damaged by pests or livestock, the trunk should be painted white or coated with a mixture of bactericide and sulfur. Planting technology in winter: The winter temperature is low, the seedlings are in a dormant state, and there is more rain and snow, and the soil is moist, which is suitable for planting trees for a long time. According to practice, the survival rate of trees planted in winter is above 90%, and there will be two rounds of new branches next year, which will grow faster. The techniques of planting trees in winter are as follows: 1. Plant suitable trees in suitable places. In different areas, even in the same area, due to different topography and climate, suitable tree species are different. Generally speaking, when selecting tree species, we should choose environmentally friendly tree species with strong resistance, straight trunk, many branches, short defoliation period, good shading effect, pruning resistance, easy survival after planting, convenient management and no pollution according to local conditions. It is best to choose native tree species with high economic value. The second is improved varieties and strong seedlings. First of all, we should choose strong seedlings that are suitable for local growth, resistant to pests and diseases, with strong trunk, developed root system, balanced height-thickness ratio and no mechanical damage. Secondly, we should adhere to the principle of lifting, transporting and planting, choose appropriate tools when lifting seedlings, and take measures such as soaking roots and covering them with mud to keep seedlings fresh and moist without losing water. Third, the planting method. First of all, the planting depth should be appropriate. On the dry and loose plot, the size of the pit is slightly larger than the root system of the stretched seedling; It should not be planted too deep in clay and depression, but should be planted shallowly; For proper deep planting in plots with dry soil, a pit of 1 m3 should be dug. Generally speaking, when planting bare-rooted seedlings, the buried height should be 2-5 cm higher than the in-situ boundary line. Fourth, adhere to the principle of "three buries, two steps and one seedling". Do vertical planting, layered filling, layered compaction, so that the roots of seedlings stretch and closely combine with the soil. After afforestation, the seedlings should be watered once in time, then the seedlings should be righted, ridged, filled and sealed ... >>
When is a good time to plant trees in the north?
It is difficult to determine the time because the temperature is different in different years and regions. It should be that the temperature has risen, and it won't freeze again, so it's okay.
When is the best time to plant trees?
From now on, the sooner the better.
What season is best for planting trees?
1 characteristics of planting trees in spring
Planting trees in spring refers to planting trees after the soil is frozen in spring and before the trees germinate. At this time, the trees are still in dormancy, and it is easy to reach the physiological balance between the above-ground and underground parts after planting; At this time, the soil in most parts of the country is in the stage of thawing and pulping, and the water condition is sufficient, which is conducive to the survival of trees. Spring is suitable for planting in most parts of the country and almost all tree species, which is most conducive to survival, so spring is called the golden season for tree planting.
2 characteristics of planting trees in autumn
Planting trees in autumn refers to planting trees after defoliation and before soil freezing. At this time, the trees enter the dormant period, and their physiological metabolism is fragile, consuming less nutrients, which is conducive to maintaining physiological balance. At this time, when planted, the roots are closely combined with the soil after passing through the east, and take root in early spring, which is in line with the climatic order of Mr. Shu's rooting. It is not suitable for planting tree species with cold tolerance and hollow pith.
3 characteristics of tree planting in summer
Summer is generally not suitable for large-scale planting, limited to local areas and specific tree species.
4 Characteristics of Planting Trees in Winter Trees can be planted in areas such as East China, Central China, South China and the Yangtze River Basin where the soil is basically not frozen in winter.
What season is best for planting trees?
Spring, about March. Rain, humidity, temperature, etc. It is most suitable for the growth and germination of plants and the stable development of roots at a certain time. How about March 12 Arbor Day? Haha, these are all based on science.
In spring, when is it suitable to plant trees?
March. China's Arbor Day began in commemoration of the death of Dr. Sun Yat-sen. 1979 On February 23rd, the 6th meeting of the 5th the NPC Standing Committee decided to keep March 12 as China's Arbor Day to encourage people of all ethnic groups to plant trees, green the motherland, improve the environment and benefit future generations. "Arbor Day" is a festival stipulated by some national laws to publicize forest benefits and mobilize the masses to participate in afforestation. According to the length of time, it can be divided into Arbor Day, Tree Planting Week or Tree Planting Month, collectively known as Arbor Day. Through this kind of activity, people's feelings of loving forest afforestation are aroused, people's understanding of forest functions is improved, the greening of the country is promoted, and the purposes of loving forest protection, expanding forest resources and improving ecological environment are achieved. This is a festival to mobilize the whole people to plant trees.
Autumn is the best time to plant trees.
It is best to transplant in the late 10 of the first frost festival. At this time, the ground temperature is high, the roots are easy to heal, the emergence of seedlings is delayed quickly in the second year, the leaves fall quickly, and the water loss is less, which is the best time.
Moving early is easy to lose water, and planting late will not heal.