This tree species is different from spruce of Pinaceae, Metasequoia glyptostroboides and Cryptomeria fortunei. The overall tree shape is round and beautiful, beautiful and colorful. It is dioecious again, and the female plant hangs red fruit, which is like a Christmas tree when it matures.
Because Taxus contains paclitaxel, a natural anticancer component, it is not only liked by ordinary people, but also admired by many scientists.
Taxus chinensis is a negative tree species, which likes warm and humid climate, is suitable for slightly acidic and neutral humus soil, and is slightly tolerant to shade, cold and drought.
It is cultivated in the urban landscape of Jiangnan. Such as Guangzhou, Nanning and Guilin, are also distributed in Guizhou.
In the north and other places, outdoor planting can't grow, so the park landscape can't be planted, and it all exists in the form of potted yew.
Taxus chinensis planted in the open air grows well, but Taxus chinensis planted in pots is easy to acclimatize, and some of them have not blossomed or borne fruit for 7-8 years. Some dry tips are slightly withered; Some have black spots.
These symptoms are caused by environmental differences and improper maintenance. Let's take a look at the problems and solutions that are easy to occur when raising yew.
Humus soil does not accumulate water, is rich in water and has good illumination.
1. Humus soil of potted Taxus chinensis is the most important thing.
Taxus chinensis is intolerant of barren and saline-alkali soil, avoiding stagnant water and liking fat water. Mastering these four characteristics, the preparation of humus soil can be clear at a glance.
Humus soil can neither accumulate water nor drain water too much. Too loose and breathable roots are not easy to rot, but it is difficult to keep fat and water.
If the fertilizer is always applied thinly and frequently, it will destroy the microbial activity environment of humus soil, the root system will never get a stable growth state, and the branches and leaves on the ground will also be affected.
So we need to find a balance point: loose mountain soil 50%, decomposed organic fertilizer 30%, coarse sand 20%. Reduce the composition of sand, replace the commonly used garden soil with mountain soil, and slightly increase the proportion of organic fertilizer.
This humus soil has a little poor drainage, but it can ensure ventilation and no water accumulation, and it can completely penetrate 1-2 minutes after potting.
Using a large number of decomposed organic fertilizers, the female plants are full of fruit.
Viewpoint: To change the living environment of potted Taxus chinensis, it is the most important measure to prepare humus soil that does not accumulate water but moderately keeps fertilizer and water.
Mid-Autumn Festival, no need to shade.
Second, the suitable temperature and humidity of potted Taxus chinensis
The suitable growth temperature of Taxus chinensis is 20-32 degrees, and it is semi-dormant above 35 degrees; 5 degrees below zero is prone to freezing injury.
Most of the potted Taxus chinensis live indoors, and the temperature can adapt, but the humidity is not suitable for its growth.
Water can only be sprayed 2-3 times a week in the growing season to maintain humidity. If the potted Taxus chinensis is moved outdoors during the growing season, it is better to accept the rain and dew of nature to moisten it from fright to slight cold.
The humidity is high, the temperature is suitable for growth and the color is good.
Viewpoint: In most parts of Shandong Province, potted Taxus chinensis can be placed outdoors in sunny and sheltered places for wintering. After the experience of frost and snow, it can effectively freeze some winter eggs and fungi.
The immunity of Taxus chinensis is improved and its ability to resist diseases is stronger; Deep dormancy of Taxus chinensis is more vigorous than non-dormancy.
Taxus chinensis after deep dormancy
3. Lighting and ventilation needed by potted Taxus chinensis
Compared with photophotography, ventilation is more important for Taxus chinensis. Because of its tolerance to semi-shade, yew can receive 4-6 hours of light every day.
However, ventilation should be extended appropriately, and it is best to open the balcony window at night and accept the ventilation throughout the night.
Be careful to use electric fans for ventilation. The needle-shaped leaves of Taxus chinensis will be dehydrated quickly due to the continuous dry air flow, while the roots will not be able to replenish water, and it is easy to dry and dry.
You can share the fresh and humid air at night with flowers that like ventilation, such as Milan, Murraya, Daphne, and Hedyotis.
Taxus chinensis, which is deeply dormant, is growing vigorously.
Viewpoint: Natural wind is the best growth massage for yew, and it is also equivalent to kicking our dogs. What we have to do is not to interfere artificially for ventilation.
Manual intervention refers to heating, air conditioning and electric fans. The yew assisted by the electric fan shows that the yellow-green stomata on the back of needles turn grayish brown or almost colorless. Rapid dehydration leads to stomatal closure or stomatal drying damage.
Taxus chinensis, which is not dormant, is slightly old.
Four, common potted Taxus species of diseases and insect pests
Common diseases of Taxus chinensis include black spot disease, white silk disease and basal rot. The main causes of the three diseases are poor ventilation and light transmission, excessive fertilizer and water or long-term lack of organic fertilizer.
To prevent diseases, we should work hard on fertilizer, water, light and ventilation. Just like a person with high protein and green vegetables every day, strong body and sensitive immune system, his chance of catching a cold is very small.
Black spot is infected by mesothelium and can be treated with polyoxin, pyrimethanil, prochloraz, procymidone and iprodione. Bacterial blight is infected by Rhizoctonia solani, and the pathogen is not easy to find at the base of the trunk.
The initial symptoms of the lesion can be seen when the soil layer of 1-2cm is removed. There are white spots as big as rice grains. After 2-3 days, they will form white filaments, long strips, and several strips are separated, like silk melon pulp.
Bacterial blight can be treated with zineb, aluminum phosphate, guangkuling, hymexazol and pycnogenol. The treatment scheme of basal rot is similar to white silk disease.
Insect pests include red spider, aphid, cutworm, etc. There are many pesticides such as organophosphorus, organochlorine and organosulfur, and there are many choices.
Viewpoint: The key to prevent pests and diseases is to improve immunity. Improving soil, fertilizer, water, light and ventilation are fundamental measures. It is only the last single-plank bridge to take medicine after the disease occurs.
Fertility is low, nitrogen fertilizer is used more, and the wood is tender and poor in autumn.
Conclusion: The above four aspects are the conventional cultivation measures of potted Taxus chinensis. If female plants and male plants can be cultivated together, flowering and fruiting will be just around the corner.