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Seed propagation method of Rhododendron erinaceus

A technology for seeds and rhododendrons, applied in the field of plant reproduction, can solve the problems of less nutrients in the endosperm, small seeds of rhododendrons, and death of seedlings due to water loss, and achieves the advantages of good moisture retention, fast new plants, reduced water management and disease control difficulties. Effect

Active Publication Date: 2021-06-01
江西省·中国科学院庐山植物园
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  • Abstract
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Problems solved by technology

[0004] Sowing seedlings has the characteristics of high reproduction coefficient (large number of Rhododendron seeds), good root system of seedlings, and strong cultivation adaptability. There are still many problems: rhododendron seeds are extremely small, chaff-like, with few endosperm nutrients, and the seedlings grow very slowly (1-year-old evergreen rhododendron seedlings are 2-4 cm taller), delicate; Avoid strong light and dryness during the growth process. Short-term drought will lead to dehydration and death of seedlings. Excessive humidity will easily cause the occurrence and spread of an important soil-borne disease in the seedling stage-damping-off, resulting in seedling failure.
In order to speed up the process of introduction, domestication and industrialization of Rhododendron erinaceus in my country, with the support of several special projects for Rhododendron erinaceus, in recent years, we have systematically carried out the research and development of substrates for seed propagation of Rhododendron erinaceus and the research on seedling cultivation technology, and selected a suitable Its new substrate for sowing seedlings has successfully solved the problems of slow seedling growth, difficult management, and low seedling rate

Method used

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  • Seed propagation method of Rhododendron erinaceus

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Comparison scheme
Effect test

Embodiment 1

[0019] The seed propagation method of Rhododendron erinaceus comprises the following steps:

[0020] 1. Seed collection: In the first ten days of November every year, the capsules of Rhododendron erinaceus turn from yellow to brown, and before they are about to crack, select capsules with large capsules, full seeds, and plants free from diseases and insect pests, and pick them together with fruit branches, and place them on straw paper or newspapers to dry indoors , In March of the second year, the capsules cracked naturally and the seeds were shaken out.

[0021] 2. Seedbed production: Sow seeds in mud tile pots with a diameter of 25 cm, add 6 cm of broken tiles, gravel and coarse-grained soil to the bottom of the pot to increase the water permeability of the substrate; add 9 cm of humus and vermiculite to the upper layer =3:1 volume ratio mixed substrate; gently shake the flowerpot to reduce the gap between the substrates, and finally rake and lightly press to make the surfa...

Embodiment 2

[0028] Compared with Example 1, the only difference is that pure humus is used as the sowing substrate, and the upper layer of the seeds is not covered with gray moss.

[0029] If this method is used to propagate Rhododendron erinaceus with seeds, the surface layer of the substrate is easy to harden, not only is it difficult to manage water, the seedlings grow slowly, the root system is underdeveloped, and the occurrence of damping-off is severe and the seedling rate is low. When the seedlings were cultivated for 2 natural years, the seedling rate was only 42.37%.

Embodiment 3

[0031] Compared with Example 1, the only difference is that the sowing time is the first ten days of April.

[0032]Using this method to propagate Rhododendron erinaceus with seeds, the germination time of the seeds is longer, the uniformity of emergence is poor, and the germination rate is low, but the seedlings grow well in the later stage, showing large seedling growth, well-developed root system, and less disease occurrence. The low rate resulted in a low final seedling rate (63.33%). The main reasons are: the temperature and ground temperature in the first ten days of April at the place of implementation (Lushan Mountain, 1050 meters above sea level) are relatively low, and the low temperature prolongs the germination time of seeds; the seeds of Rhododendron erinaceus are small, and the endosperm has less nutrients, and the extension of germination time results in a large amount of limited nutrients. Consumption, so the emergence of seedlings is irregular and the germinat...

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Abstract

The invention discloses a seed propagation method of Rhododendron erinaceus, the steps of which are: filling the mixed matrix of humus and vermiculite in a volume ratio of 3:1 into a pot; Spread evenly on the surface of the substrate, and then evenly cover a layer of shredded live moss on the top of the seeds; pour water thoroughly, cover with plastic film to keep warm and moisturize, and replenish water twice a week during the germination period; remove the film after the seeds germinate, 50‑75% sunshade , normal temperature maintenance and management, and spray fungicide once every 2 weeks; transplant the seedlings to plug trays after 1 year of cultivation, and maintain and manage them under greenhouse conditions, or directly transplant the seedlings to plastic greenhouses or outdoor nurseries after 2‑3 years of cultivation. Carry out field management. The method of the invention is simple to operate and easy to implement, can significantly increase the seedling rate of Rhododendron erinaceus, improve the quality of seedlings, reduce the difficulty of water management and disease prevention and control at the seedling stage, and reduce costs, and can be used for large-scale seedling cultivation and Industrialization development.

Description

technical field [0001] The invention belongs to the technical field of plant propagation, and in particular relates to a seed propagation method of rhododendron erinaceus. Background technique [0002] Hericium Hericium ( Rhododendron simiarum Hance) belongs to the Rhododendron family (Ericaceae) Rhododendron ( Rhododendron L.) Evergreen Rhododendron subgenus (Subgen. Hymenanthes), evergreen shrubs to small trees; 3-10m high, large leaves, thick leathery, yellow-green leaves on the front, light brown hairs on the back; racemose umbrella The inflorescence is terminal, with 5-9 flowers, milky white to pink flowers, with purplish red spots on the throat, open from April to May, and is an excellent ornamental plant with good flowers, leaves and plant shape. This species has a wide distribution area and is produced in Jiangxi, Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hainan, Zhejiang, and southern Hunan. It is born on hillsides, mountaintops and under forests at an altitu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G22/60A01C1/02A01C1/00
CPCA01C1/00A01C1/02A01G22/00
Inventor 张乐华刘向平张丽何浩王凯红单文李晓花
Owner 江西省·中国科学院庐山植物园
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