How to maintain tung seedlings throughout the year

1. The growth and maintenance of tung trees requires suitable temperature, water, and sufficient light conditions. In the construction process of greening projects, it often causes poor growth of tung tree, many times because of the poor transplanting environment and insufficient water supplement. This involves the watering of the tung tree in the construction of the project.

When watering the tung tree, it is necessary to carry out reasonable irrigation on the growth needs and watering cycle of the tung tree. When watering reasonably, it should be noted that the watering fence should not be dug very deeply, so as to avoid injuring the roots located in the topsoil layer; When watering, it should be watered thoroughly, and after the watering is completed, the fence should be sealed to avoid the evaporation of water.

2. After transplanting, due to changes in the environment, it is inevitable that there will be different degrees of pests and diseases. The general method of prevention is mainly through biological control and drug extermination. Biological control is generally carried out through the natural enemies of pests to carry out lower than the invasion of pests; Drug killing needs to seize the time of killing, and a small area experiment can be carried out first when spraying the drug to avoid harming its pants and other plants.

3. Weeding and loosening soil is generally in the maintenance process of tung tree, in order to prevent soil compaction, remove weeds, loosen soil and other work is a heavy work in daily maintenance. Weeding can not only reduce the loss of soil nutrients and water, but also enhance the beautification effect of the green park, and reasonable and appropriate loosening can reduce the evaporation of water.

1. Sowing methodTung sowing is generally sown. Before planting, the soil is watered and then the seeds are scattered along with fine sand. The line spacing between each strip needs to be 20cm, and it is spread evenly.

Sprinkle about 3 cm of soil and spread a layer of straw. After the seedlings emerge, transplantation, each plant is 2m apart is appropriate.

2. Tending and maintenanceAfter the seeds are sown, it is necessary to do a good job in seedling management, such as irrigation, top dressing, weeding and loosening soil, etc., and top dressing should be done in small quantities and many times at the seedling stage. In addition, in the rainy season, it is necessary to drain water in time to prevent root rot, and it is also necessary to pay attention to the transplantation of seedlings in rainy days, and check the growth of seedlings frequently.

The seeds of the tung can be sown, and the seedlings grow very quickly, the seeds can be collected at the beginning of the yellow leaves of the tung tree, dried and stored, sown in the spring of the following year in March and April, can not be covered with soil, only the sowing furrow is leveled and fine, watered thoroughly, and then the seeds.

The scientific name is plane tree.

Shaping and pruning techniques:

1. Tree selection. Plane trees have straight trunks with spread branches, usually with a broad, naturally shaped canopy. When making street trees, the shaping method is generally cup-shaped, if there is no overhead line above, it can also be used in the open shape, and when it is used as a shade tree, it is mainly natural straight trunk shape or multi-main branch shape.

2. Shaping and pruning. In the winter of the second year, the tips are cut off at 3 points at the height of the tree, and the side branches on the main trunk below the branch point are cut off. In the third year, after the seedlings germinate, select 3 5 thick branches near the branches as the main branches, and cut the rest in batches.

In winter, leave 50 80cm stub on the main branch, leave the cut bud on the side, try to make it on the same horizontal plane, after germination in the next spring, each selects and leaves 2 3-level lateral branches to grow obliquely, that is, the shape of "three strands, six forks and twelve branches", after 3 4 years of cultivation, the diameter at breast height is 7 8cm, and has begun to take shape in a cup-shaped crown type, which meets the standards of street trees and can be out of the nursery. After planting, the cup-shaped street tree should be pruned for 4 5 years in the same way as the seedling stage, until the canopy has 4 5 level side branches. After the annual dormant period to the current year's branches.

There is basically no need to prune in 3 years, as long as the tip can be guaranteed to be straight. Seedlings after 3 years can be properly pruned with branches below the meter.

Winter pruning has an important impact on the growth and tree shape of the tree, if not timely and reasonable winter pruning, it will lead to the disorganized tree shape, the main branches are long, the leaves are few or low clusters, which greatly reduces its ornamental value and shading effect. Timely and reasonable pruning can make the tree majestic and upright, straight and graceful in a short period of time, the branches are dense and compact, the side branches are many and symmetrical, the leaves are thick and green, and the natural immunity of the tree body is enhanced. The winter pruning of the tree can be carried out in autumn and winter before the leaves fall off, the soil freezes, and the tree is dormant until the sap flows in the spring of the following year.

For newly planted young trees, when the stem is up to high, it is called "fixed stem". Pruning can be based on the overall view of the whole tree and the determination of the future cultivation direction, first cut the upright branches, drooping branches, then prune the diseased branches, cross branches, weak branches, inward branches and branches that affect transportation facilities, and finally leave 3 4 strong main branches. The main branch should be conducive to future shaping, with strong growth and moderate opening angle.

After selecting the main branch, it should be shortened at 30 40cm near the base, the cut should be smooth and not hurt the bark, and the wound protector should be applied at the cut to avoid pests and diseases and water transpiration. Smoothing the wound also promotes the formation of callus, which aids wound healing and prevents bacterial infection. The wound care agent can be waxed, white-coated Jining tung agent, tung oil or paint.

Every 3 to 4 years after the growth of young trees, a large pruning of the tree body is carried out in winter. Generally, the 3 to 4 main branches that are retained for the first time can be basically unchanged, and then 1 2 strong branches are retained on each main branch, and the length of 20 30cm can be left in the short truncation. The side branches on the twigs can be left according to the specific situation, such as when the communication line next to the tree is not high, only the 3 4 stub main branches left when the first time is set to dry can also be retained, so that the height of the whole tree can be reduced, and the light transmittance of the branches and leaves is increased at the same time, which does not affect its growth, and also protects the tree shape well.

Plane tree: A deciduous tree of the plane family, with a bell-shaped crown and large leaves like palms, with 3 to 5 lobes. From March to April, it blooms with small flowers, monoecious, and the aggregate fruit is spherical, and the fruit is ripe in October.

Positive fast-growing tree species, strong resistance, slightly hardy, but due to poor root development, it is easy to be blown down by strong winds. The soil requirements are not strict, and the growth can be resumed after short-term flooding, with strong germination and resistance to pruning. Sowing and cuttings can be used.

In order to accelerate the growth of seedlings, cultivate high-quality strong seedlings and green seedlings with beautiful crowns, the maintenance should be strengthened in the following aspects.

Fertilization: First of all, add basal fertilizer, combine with tillage and land preparation before planting, and apply 6-7 cubic meters of rotted circle manure, compost and soil miscellaneous fertilizer per mu. Due to the long effect of organic fertilizer, it can continuously provide nutrients during the whole growth period of seedlings to accelerate the growth of seedlings.

The second is to increase the application of top dressing, which should be carried out at the stage of vigorous growth of seedlings. Mainly fast-acting fertilizer, especially in the rainy period from June to August, it should be applied once a month, and it should be watered immediately after fertilization in order to give full play to the fertilizer effect.

Pruning and shaping: When pruning and shaping, according to the characteristics of green seedlings, a certain trunk height (m) should be retained, the main tip should be cut off for fixed stem, and three branches in different directions (intersection angle of 120 °) should be selected in the upper part for short pruning. During the growth period, the buds were wiped in time to promote the growth of the three main branches.

When pruning in winter, 2 appropriate side branches can be selected in each main branch for stubbing, in order to form 6 small side branches, summer topping controls its growth, pruning in the winter of the next year, two branches are selected on each of the 6 small side branches for stubbing, you can form a branch shape of 3 main 6 branches and 12 forks, and then 1 3 of the main branch can be pruned every winter as an extension branch of the main branch, and the weak branch is retained as an attached branch. Cut off too many side branches, so that the remaining side branches alternate, but the length can not exceed the main branch, the strong growth of the branches should be retracted and pruned in time, and timely pruning of diseased branches, cross overlapping branches, upright branches. Make the canopy compact, plump, full, and beautiful.

Prune the trees every one to two years after they are formed to avoid star hair pollution.

Control pests and diseases. Two months is the serious damage period of the year, which can be combined with pruning and loosening to eliminate overwintering pest cocoons, remove insect leaves, and also set up black lights to trap and kill adults. Pesticide control can be controlled with 80% dichlorvos emulsifiable concentrate and pyrethrin pesticide 5000 times.

Pruning time.

Generally speaking, the best time to prune golden buckwheat is about 2-3 leaves on the side buds of golden buckwheat seedlings, before lignification, about autumn and September every year. Generally, it cannot be pruned during growth, which will affect the development of golden buckwheat, so that its tree-shaped branches can not grow better.

Pruning effect of tung pruning.

years, the shell bucket family is generally pruned in the fall. After pruning, labor and nutrients can be saved first, thereby increasing the growth of Zhirock crustaceae. In addition, at this time, proper pruning of the shell bucket family can also cultivate excellent seedlings of the shell bucket family with straight trunks and beautiful tree shape, which is conducive to better formation of the shell bucket family in the later stage.

Pruning method and formula.

When pruning pruning, you need to pay attention to the method of pruning. In general, different pruning methods will lead to different tree shapes, so you need to do your homework before pruning and prune according to the plan. Step 1:

First of all, you need to prune off some dead branches that are not growing well and cannot be saved. Step 2: Properly prune some excess branches to ensure that the tree shape is fierce and beautiful.