How to do the preliminary work of tung seedling planting

To ensure that the land is soft, it is best to apply an appropriate amount of chemical fertilizer to ensure the nutrition of the land.

Cut upright, drooping, diseased, crossed, fragile branches, introverted branches, and branches that affect transportation facilities, leaving 3 strong main branches. Pay attention to the budding during the growing season.

First of all, cut off the upright branches, overhanging branches, diseased branches, crossed branches, weak branches, and branches that affect the circulation of branches. Pruning, pruning at a moderate height, applying a protective agent to the pruning to control pests and diseases. Prune the branch incision to be smooth, which facilitates wound healing.

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 branches that are near the branches and grow stout as the main branches, and cut the rest.

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.

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.

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.

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.