How to choose the seeds of Platycladus orientalis? What are the methods of raising seedlings?

Friends living in rural areas may have seen many different kinds of trees, such as Platycladus orientalis is a more common one, in fact, Platycladus orientalis has a lot of functions, especially its leaves have good medicinal effects, and it is also good to soak wine. How to choose Platycladus orientalis seeds? What are the methods of raising seedlings? Friends who want to know, please read the following!

How to choose the seeds of Platycladus orientalis?

Platycladus orientalis seeds should be selected from the local area or areas where the climatic conditions are similar to those of the nursery. High-purity and high-quality seeds should be selected and graded by air or water to remove rotten and rotten seeds and remove branches and leaves, fruit fragments and withered seeds. After the cones are transported back, they are exposed to the sun on the field for 3-5 days. After the fruit scales are cracked, tap the fruit scales and the seeds can fall off. Then use screening, air separation or water separation to remove fruit scales, inclusions, and blighted grains. After the shade is dry, hide in the bag.

2. Seedling raising methods of Platycladus orientalis seeds

1. Seed collection

Platycladus orientalis can bear fruit in 4 to 5 years (if the crown height is more than 1 m), until the hundred-year-old trees have rich fruit. The natural Platycladus orientalis in Guzhangzi Township of Jianchang County can collect high-quality Platycladus orientalis seeds. Most of the cones of Platycladus orientalis mature from mid-September to mid-October, and can be picked when the cone scales change from green to yellowish brown, otherwise the seeds are easy to fall off. When picking, hit the twig with a long rod to make the cone fall to the ground, then collect and air for half a month or so, and the seed can be protruded by turning, tapping and so on. Then clean seeds can be bagged and stored dry, but attention should be paid to moistureproof and mildew proof. About 10 kg of high quality seeds are produced from every 50 kg of cones. 2.5 million container seedlings of Platycladus orientalis were cultivated by using the improved variety of Platycladus orientalis produced in Guzhangzi Forest Farm of Jianchang County (Liao R-SS-PO-017-2014).

2. Soil preparation and fertilization

From March 20 to April 10, 2016, organic fertilizer and compound fertilizer were scattered evenly on the surface, and then mechanical rotary tillage was used to ensure uniform fertility. The seedling bed was made into a low bed of about 15 cm, with a bed width of 100 cm and a trail of 40 cm. One week before bagging, the bed soil was watered enough to keep a certain amount of moisture in the soil, which was beneficial to seed germination.

3. Seed germination treatment.

In the first ten days of March 2016, the seeds of Platycladus orientalis were soaked in 0.5% potassium permanganate solution for 2 hours, then soaked in 40 ℃ warm water for 24 hours, and the seeds of Platycladus orientalis which were not full floating on the water were removed. The soaked full Platycladus orientalis seeds were evenly mixed with the same amount of fine sand and stored in a 80 cm 100 cm seed trough dug in the shade ventilated place. the bottom was covered with 5 cm fine sand and the upper part was covered with 20 cm fine sand.

4. Sowing seeds

In early April 2016, Platycladus orientalis seeds, which were treated years ago, were spread on grass curtains with a thickness of 4 cm, covered with plastic film, and placed indoors. The temperature was kept at about 20 ℃, washed once a day with 20 ℃ warm water, and turned twice. About a week or so, the seeds began to sow when most of the seeds showed white teeth. When sowing, first put the container cup into the soil, when the container mouth is 1 cm, put 3-5 seeds in the container, then fill the soil and put it neatly, cultivate the soil around the seedbed, do not expose the container around the bed, and the soil above the container is 1 cm, which can prevent water evaporation, watering in time after sowing, and covering the border with a small plastic film arch shed with a height of 20-30 cm after watering, which can improve the wetness of the ground and promote seed germination. In order to improve the quality of afforestation, put the herbicide on the border according to the instructions before covering the shed.

5. Seedling stage management

When the seedlings were 3-5 cm high, the Ⅰ seedlings were left in the nutrition cup, and the weak seedlings, pest seedlings and double seedlings were removed in time, and the surplus Ⅰ seedlings were added to the unemerging nutrition cup to ensure the number of seedlings.

In fact, the role of Platycladus orientalis is quite many, not only has a very good ornamental effect, but also has a certain medicinal effect, you can also make furniture, if you are going to buy seeds for planting, you can learn from some of the selection methods above. In addition, the editor also shared some related seedling raising methods, hoping to help you.

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