Introduction to the propagation method of locust trees, how to propagate locust flowers

Sowing propagation The propagation of locust flowers can be propagated by direct seeding, and mature and full seeds should be selected, soaked in 70 to 80 warm water, and soaked for about 24 hours. Then remove it and put it in fine sand, wait for germination, and then sow the seeds. and side masks.

Sowing and rearing seedlings are carried out in spring and autumn, and transplanting with false plants is left until late autumn, when the soil freezes, and the seedlings are transplanted into a trench between 60 and 70 cm deep for wintering. Planting and watering are carried out in the spring of the following year.

Root tiller propagation The root tiller propagation of locust flowers is relatively simple and easy, you only need to dig up the root tiller seedlings of mature trees, carry out hole planting, and it can become an adult plant in four to five years.

Propagation and maintenance of locust flowers.

When the locust flowers are propagated, the light and humidity should be ensured, and the climate should be dry and cold.

Fertile, deep, well-drained soil is required, and attention is paid to loose soil.

Timely weeding and pest control.

1. In the growing season of locust trees, farmers will select lignified locust tree hard branches with a diameter of 8 20 mm for cuttings, and use sharp knives, wires, ropes and other methods to cut locust tree branches, mainly to prevent the dispersion of photosynthetic products in the upper part of the branch cuttings, and to keep its growth hormone from destroying silver. The nutrients of the locust tree accumulate in the damaged parts of the tree, and then the damaged parts swell. Nutrient-sufficient cuttings can significantly improve the rooting rate of cuttings, which is conducive to the growth of seedlings.

2. In the normal cultivation, management and transportation process of the locust tree by farmers, the 1 2-year-old locust tree will be selected and put into a large pot for potted plants, so that the root system of the locust tree can grow naturally and the slender old banquet will be attached to the block in the pot, and then transplanted in the corresponding construction green space and park for timely watering. The roots of the transplanted locust tree have not been damaged in any way, and the root system is complete and developed, resulting in it being able to directly absorb enough water and nutrients in the newly transplanted soil, which greatly improves the survival rate of the transplanted locust tree.

1. Seedling. After sowing, the seedlings generally begin to emerge in 7 10 days, and they emerge in 10 15 days. The mulching plot should be removed when the seedlings grow 2 or 3 true leaves.

When the seedling height is 15cm, the seedlings are interspersed 2 3 times, the distance between the fixed seedlings is 10 15cm, and the number of seedlings per mu is about 8000.

5. Transplanting. For greening seedlings, generally 3 4 years to be out of the nursery, because the top of the seedling branch buds dense, ask the short distance, the trunk is very easy to bend, the next spring will be the annual seedling according to the plant spacing 40 50cm, row spacing 70 80cm for transplanting, after planting the trunk can be cut off from the ground 3 5cm.

Because the locust tree has germination power, a large number of buds are easy to occur after cutting, when the budding shoots grow to 20cm left and right, select and leave a strong branch that stands upright upward as the main trunk, and the rest of the branches are all erased. In the future, pay attention to removing the tillering and removing the side at any time, and temporarily retain the weak side branches in the upper, middle and lower parts of the main trunk, which is beneficial to prevent the main trunk from bending. In this way, the seedling height can reach more than 3 m in the following year.

3. Fertilizer and water management.

The watering of Chinese acacia seedlings should be determined according to climatic conditions, soil texture and other factors. Under normal circumstances, after the emergence of seedlings to before the rainy season, water 2 3 water, before the nursery is frozen, water 1 time of frozen water, and drain water in time in case of waterlogging;

Before sowing, the seedling land is applied basal fertilizer (mainly organic fertilizer or circle fertilizer) about 3000kg, and in early June, combined with watering, fast-acting nitrogen fertilizer can be applied per mu such as urea) 8 10kg, and urea is applied in 7 August (it is best to mix with an appropriate amount of compound fertilizer 12 3 times, and the amount of fertilizer is about 30kg each time. After September, no more watering and fertilization will be applied to promote the lignification of seedlings.

4. Shaping and pruning.

It can be shaped and pruned into three tree shapes: natural heart shape, cup shape and natural shaft main stem shape according to needs. Natural open shape that is, when the main trunk grows to more than 3m, the trunk is fixed, 3 or 4 branches with strong growth and appropriate angle are selected as the main branches, and the side branches and buds below the main branches are removed in time, and the main branches are shortened during winter pruning, leaving 50 60cm to promote the growth of secondary shoots to form a small crown;

Cup-shaped that is, after the fixed drying, with the natural open shape to leave 3 main branches, in the winter pruning on each main branch to leave 2 side branch stubs, forming 6 branches, in the summer to carry out topping, control the growth, the following year in the winter pruning on the twigs each choose 2 branches short shears, forming a "3 strands, 6 rights and 12 branches" cup-shaped shape;

The natural axis of the main stem shape means that after leaving the main branches, as long as the strong apical buds and erect buds are retained in the future, the strong branches at all levels will be cultivated, so that the crown will continue to expand.

In the normal cultivation and management and transportation process of locust trees, select 1 2-year-old locust trees and put them into large pots for potted plants, so that the root system of locust trees can grow naturally and climb into blocks in pots, and then transplant them in the corresponding construction green spaces and parks;

In this way, the roots of the transplanted locust tree have not been damaged in any way, and the root system is complete and developed, which leads to its ability to directly absorb enough water and nutrients in the newly transplanted soil, which greatly improves the survival rate of the transplanted locust tree.

Newly planted trees have the characteristics of weak resistance, and in addition to watering on time, locust trees are protected by spraying, moisturizing, or wrapping bark according to conditions such as tree species and weather. In summer, it is necessary to prevent the leaves of the locust tree from burning, and in the winter, it is necessary to prevent frostbite from the trees of the locust tree.

Shaping and trimming. According to the need, it can be shaped and pruned into three kinds of tree shapes: natural heart shape, cup shape and natural axis main trunk shape, natural heart shape is when the main trunk grows to more than 3m when the trunk is fixed, select 3 4 branches with strong growth and appropriate angle as the main branch, remove the side branches and buds below the main branch in time, and carry out medium and short truncation of the main branch during winter pruning;

After the cup-shaped shape is set to dry, leave 3 main branches like the natural happy shape, and select 2 side branch stubs on each main branch during winter pruning to form 6 small branches, and carry out topping in summer to control growth;

When pruning in the winter of the following year, choose 2 short branches on the twigs, and the natural axis of the main stem shape means that after leaving the main branches, as long as the strong apical buds and erect buds are retained in the future, the strong top buds and erect buds are retained, and the strong branches at all levels are cultivated, so that the tree school is constantly expanding.

Seedlings: Fallen leaves can be transplanted, before digging the tree, you can properly prune the crown, according to the ratio of 1:8 rice diameter soil ball seedlings.

Planting: Dig the tree pond, dig the tree pit according to 1 times the soil ball, the depth is equivalent to the height of the soil ball, put the tree into the pit, straighten, cultivate the soil, compact, and then water enough, and then cultivate the soil. Large trees need to be supported by bamboo poles, sticks, etc., or fixed with ropes and wooden stakes to prevent strong winds from blowing.

Bare root transplantation can be done in spring and soil balls in summer.

Locust tree is a tree species with a high survival rate of all green trees, with soil balls, or bare roots can vary according to the season and engineering requirements.

Breeding and breeding. It is mainly sown and reproduced, but also cuttings. Spring sowing, because the seed coat has a tightly bound cell fence layer, poor water permeability, before sowing, soak the seeds with water at an initial temperature of 85-90 degrees for 24 hours, and then treat the remaining hard grains 1-2 times.

The seeds absorb water and swell to be sown. Strip sowing row spacing of 20-25 cm, covering soil thickness cm, sowing amount of 8-10 kg per mu, 7-10 days seedlings unearthed, seedling period reasonable dense planting, to prevent trunk bending, generally 6-8 seedlings per meter long, annual seedlings up to more than 1 meter. It can also be transplanted after transplanting seedlings in early spring.

The germination power of the Chinese acacia is strong, if the cultivation of large seedlings forms a good dry shape, it can be cut dry in the early spring of the second year, increase the spacing between the rows, the seedlings are 3-4 meters high in the current year, the trunk is straight, thick and smooth.

Due to the slow growth of the seedlings and the long cycle of cultivating large seedlings, the seedlings of Acacia japonica are in short supply. The seedlings were cultivated by using a nutrient bowl and transplanting with increased row spacing, and the performance effect was better. The specific technology is as follows:

Land selection and land preparation Choose a neutral sandy loam soil with fertile soil and easy drainage and irrigation as a nursery. When preparing the land, it is necessary to apply foot fertilizer, generally 50 kg of farmhouse fertilizer, phosphate fertilizer and cake fertilizer per acre, and use 30 carboburan 0 75 1 25 kg for soil treatment, and make a flat bed with a width of 1 meter after plowing and raking.

Soak the seeds in early March, put the seeds in 80 degrees of warm water, stirring as you go, until the water temperature drops to 40. Then remove impurities and continue to soak for 2-3 days. When soaking, pay attention to changing the warm water of 30 degrees twice a day.

Nutrient bowl seedlings Choose a flat terrain, well-drained, leeward and sunny place, and dig a pool with a width of 1 1 5 meters and a depth of 30 40 cm as a seedbed. Sandy loam soil plus sieved farm manure is used as nutrient soil, and cotton bowls are used to make bowls. Place the bowl in the bed and sprinkle water evenly.

Then, put 2 3 seeds in each bowl, sprinkle 1 cm thick moist fine soil on top, cover with a plastic film bow, control the temperature in the bed below 40, and keep the bed surface moist. When the seedlings are 15 to 20 cm high, the seedlings are refined for 3 to 5 days, and then the field transplanting can be carried out.

Seedling management After transplanting and surviving, it is necessary to carry out weeding and loosening soil in a timely manner, watering if necessary, and applying 15 kg of urea per mu, and the seedlings can be as high as 2 5 meters or more. The growth of two-year-old and three-year-old seedlings is accelerated, and 50 kg of cake fertilizer should be applied per mu in spring every year, and urea should be applied 2 or 3 times in summer, and 10 kg per mu should be applied each time. In addition, it is necessary to strengthen the prevention and control of seedling diseases and insect pests to ensure the healthy growth of seedlings.