Planting method of Toona sinensis seedlings

Seed soaking and accelerating germination: the seeds of new Toona sinensis collected in the same year were soaked in 55 ℃ warm water and germinated at 23 ℃. Sowing: spread the germinated Toona sinensis seeds evenly on the substrate and spray water immediately after covering perlite. Spray management: 5-10 days after sowing, it should be sprayed regularly to keep the air relative humidity at about 80%, speed up the growth of seed buds and promote tender quality. Timely harvest: about 12-15 days after sowing, cotyledons have been fully harvested at ordinary times.

The planting of Toona sinensis is not complicated, but it requires high temperature. Toona sinensis likes light and temperature, so it is suitable for planting in places with mild climate. So, what other important planting methods are there for Toona sinensis seedlings to produce these? Next, let's study it with the editor with some questions.

Planting method of Toona sinensis seedlings

1. Soaking seeds to promote sprouting, selecting the year to harvest new Toona sinensis seeds, removing impurities and removing wings. Soak the seeds in 55 ℃ warm water, soak them for 12 hours, rinse, drain the surface moisture of the seeds, and put them into 23 ℃ constant temperature to accelerate germination. After 2 days and 3 days, the seed buds can be sown when they reach 1~2mm.

2. Sowing, wash the seedling tray in advance, spread a layer of white paper on the bottom layer, spread a layer of wet perlite with a thickness of about 2.5cm (the volume ratio of perlite to water is 2:1), then spread the budding seeds evenly on the substrate, the sowing rate is 240g/m2, and then cover the seeds with perlite about 1.5cm thick, spray water immediately after covering, the amount of water spraying is 1 / 2 of the volume of perlite in the cover layer. Perlite can also be sprayed directly and then covered.

3. In spray management, 5 days after sowing, the seed buds extended to the substrate, and 10 days later, the Hypocotyl of Toona sinensis buds reached 8~9cm, rough 1.0mm, and root length about 6cm. During this period, it should be sprayed regularly to keep the air relative humidity at about 80%, speed up the growth of seed buds and promote tender quality.

Ramet propagation of Toona sinensis seedlings

Also known as tiller or root tiller reproduction. It is the most common propagation method of Toona sinensis which is suitable for sporadic cultivation. Toona sinensis has a strong sprouting and tillering ability, and its lateral roots are distributed in the topsoil layer of 10cm, and most of them grow horizontally, which is easy to sprout and form clump-like plants. After defoliation in autumn or before germination in spring, trenching or digging holes around the mother tree can promote the germination of roots and tillers, which can be planted in autumn or the following spring.

Root cutting Propagation of Toona sinensis seedlings

Root cuttings are used to propagate seedlings by making use of the characteristics that Toona sinensis roots are easy to form adventitious buds. This is a kind of seedling raising technology with easy operation, low investment, high survival rate, fast seedling formation and wide application. The main points are as follows: deep application of organic fertilizer in the soil preparation to keep the soil loose and moist; select strong seedlings from strong, high-yielding trees or nurseries, dig the roots of thick 0.5~1.0cm, cut them into small segments of 15~20cm as cuttings, and cover the soil with a thickness of 2cm 3 cm when the seedlings are high 10cm; spraying urea at seedling stage for 3 times and then spraying phosphate and potash fertilizer for 3 times in September to promote the Lignification of seedlings In the rainy season, it is necessary to drain and loosen the soil in time; do not water the roots that have just been cut to prevent decay.

There are two kinds of soft wood cuttings and hardwood cuttings. The key of soft wood cuttage lies in the fullness of cutting tissue. The all-lignified branches are difficult or slow to take root; the branches are too young and are easy to rot after cutting. The survival rate of semi-lignified or mostly lignified branches as cuttings is high. Taking the budding branches on the root or stem as cuttings is easier to take root and survive than the branches on the crown.

The specific method is as follows: from late June to early July, the branches on the trunk which are 20cm off the ground and have entered Lignification are cut into small segments of 20cm or 10~15cm, and the lower end is cut into an oblique orifice. The upper part of the cuttings retains two pairs of leaflets at the base of 1-2 compound leaves, and the rest of the leaves are cut off. The cuttings were dipped in 500mg/L 's NAA or vitamin D12 solution, inserted into loose, fertile and moist soil according to 40cm × 40cm density, and a small arch shed was built on the border to maintain 85%-90% relative humidity and a temperature of 20-30 ℃, and rooting in about 50 days. Hardwood cuttings after defoliation of Toona sinensis in early winter, 1-2-year-old branches were selected, cut into 15~20cm segments, the upper mouth was cut flat, the distance from the top bud 1.5cm was about, and the lower end was oblique. The cuttings were tied up and buried in a bunker for the winter, and taken out the next spring. The lower end of the cuttings was soaked in NAA500mg/L solution for 2 hours. After washing, the cuttings were inserted into a sunny bed covered with pure sand, covered with plastic film, and a small arch shed was built on the border to maintain a temperature of about 25 ℃ and a relative humidity of more than 85%. After a series of management, it can be planted in the nursery in the same year or the following year.

Picking of Toona sinensis seedlings

Common cultivation and dwarfing close planting cultivation of Toona sinensis generally germinate before the Qingming Festival, and the top buds can be picked before and after Grain Rain. This first pick, called the first stubble Toona sinensis bud, is not only fat and tender, but also rich in flavor and high quality; later, according to the growth situation, pick the second time every 15 minutes and 20 days. The newly planted Toona sinensis can be harvested 2 times at most, and 3 times a year after 3 years, and the yield will increase accordingly. As for protected cultivation, it can also be picked in winter by heating. If it is not heated, tree buds can be supplied in advance in early spring.

After reading the above article, we learned about the planting method and related knowledge of Toona sinensis seedlings. Summer is not suitable for transplanting plants, if it must be transplanted, special methods are needed to maintain it. According to the scientific method, the survival rate of trees can be improved and healthy Toona sinensis can be cultivated.