How to select yew seeds? What are the methods of raising seedlings?

Taxus, also known as yew, is a first-class protected plant in China, known as "tree giant panda", its main value lies in strong ornamental and good medicinal use. At present, Taxus is in an endangered state, so it is very important for the cultivation of Taxus. Of course, if you want to plant a good yew, seed selection and seedling breeding is the key, let's learn more about it.

How to select yew seeds?

Taxus is generally cultivated by seed propagation, so the quality of seed selection will directly affect its physiological maturity. First of all, the seeds stored in wet sand are selected by fine sieving. Because the seeds of Taxus chinensis can only germinate after two winters and one summer, the mature seeds without treatment can be germinated by stratification for more than one year to break dormancy. Therefore, after selecting the seeds, it is also necessary to soak the seeds, and the seeds can be soaked with 60% concentrated sulfuric acid for 3 hours, so as to ensure the vigor of the yew seeds.

What are the methods of raising seedlings?

1. Nursery site selection

In the stage of seed breeding and sowing of Taxus mairei, the nursery must be selected scientifically, and the nursery needs to ensure that drainage, nutrition and soil quality all meet the needs of breeding. After the selection, it needs to be deeply turned over and fertilized.

2. Make a bed

In the soil preparation operation, the soil on the soil layer should be divided into 1.2 m wide, high 20cm and 0.4 m wide nursery, and be strengthened around the ridge to ensure the normal operation of watering in the later stage.

3. Sowing seeds

Before sowing, the bed needs to be made separately on the nursery. The height of the bed is 15cm-20cm and the width is 1.2m. The flat surface is pressed out of a 2 cm deep sowing ditch with a board with a width of 15cm, and then sow seeds.

4. Raising seedlings

After the seeds emerge, because the seedlings are afraid of direct sunlight, it is necessary to build a shade shed on the nursery. The light transmittance of the shade shed should be 15-20%. After the construction of the shade shed, the grass should be weeded every 15-20 days, and urea should be irrigated at the same time, which can speed up the growth of seedlings and can be transplanted after a year.

5. Pest control

In the process of raising seedlings of Taxus chinensis seeds, it is very important to control some common diseases and pests, which is one of the important guarantees to ensure the survival rate of seed breeding. For example, aphid disease is one of the common diseases of Taxus mairei. If the greenhouse seedling is selected in the process of seed breeding, the temperature in the greenhouse must be controlled above 18 ℃. At the same time, 10% imidacloprid emulsion should be selected to sprinkle the seedling bed. The control effect of this method is very good and can effectively control aphids.

Generally speaking, Taxus as a rare tree species in China, in the process of cultivation, we must master its seed selection and seedling skills in order to be conducive to the subsequent growth and development, improve the survival rate of Taxus, and bring better benefits for growers.

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