What are the cultivation methods for Dendrobium huoshanense?

SummarySubstrate: The substrate is granite gneiss. Watering: After planting, water twice in succession, then water later according to the dryness and moisture of the growing medium. Fertilizer: Organic and inorganic fertilizers can be applied. Temperature: The suitable growing temperature is 20°C-28°C, and the humidity is around 70%. Shading: In summer and autumn, two layers of 90% shade netting are needed for shading. Frost protection: Frost protection measures must be taken in winter. Pest and disease control: Carbendazim and granular Meta (metaldehyde) can be used for control.

1. Substrate

Choose granite gneiss as the cultivation substrate, with a rock layer thickness greater than 20cm, the rock being slightly acidic, with a PH value between 5.0-6.5. The planting density of tissue-cultured seedlings must not exceed 1000 plants per square meter, and the planting density of divided plants must not exceed 500 plants per square meter.

2. Watering

1. After planting Dendrobium huoshanense, the first watering must be thorough, and then on the second day it should be watered heavily again, so that the bark absorbs the water thoroughly. If the surface of the growing medium is dry, a sprayer can be used to moisten the pot surface, or installing sprinkler irrigation is more convenient; once the surface of the growing medium is dry, it can be sprayed.

2. In hot and dry weather, water can often be sprayed on the leaves and ground, which helps increase air humidity. If there is too much water or water accumulation, it easily causes root rot in the plants. If drought weather occurs, irrigation must be carried out promptly.

3. Fertilizer

1. During cultivation, organic and inorganic fertilizers can be applied, mainly using organic fertilizer as the base fertilizer, and during the growing period foliar fertilizer should also be sprayed. Organic fertilizers mainly include sheep manure, cake fertilizer, etc.; inorganic fertilizers include controlled-release fertilizer and aqueous solution fertilizer (containing nitrogen, phosphorus, potassium, etc.).

2. Aqueous solution fertilizer is first applied around Qingming, then sprayed once about every 10 days until August; controlled-release fertilizer is applied once in early April and once in June, and after the Beginning of Autumn, 3% potassium dihydrogen phosphate can be sprayed once every 10 days, for a total of 3-5 sprays.

4. Temperature

When the temperature is 14°C, Dendrobium huoshanense will begin to grow. The relatively suitable growing temperature is 20°C-28°C and the humidity is around 70%. When the temperature is above 32°C and the relative humidity is below 20%, some leaf veins will turn yellow and the leaves will droop.

5. Shading

Dendrobium huoshanense is relatively suitable for growing in a semi-shaded, semi-sunny environment and is relatively afraid of direct sun exposure. In summer and autumn, two layers of 90% shade netting are needed for shading, while in other seasons one layer of shade netting can be used.

6. Frost protection

For artificially cultivated Dendrobium huoshanense, frost protection measures need to be taken in winter in the Jianghuai region, especially for test-tube seedlings planted in the same year. In addition to building greenhouses for frost protection, a layer of soil canvas also needs to be covered over the seedling bed, generally from mid-December to late February of the following year. In winter the seedlings must not be too wet, to prevent freezing and damage to the plant root system.

7. Pest and disease control

1. Common diseases of Dendrobium huoshanense include black spot disease, anthracnose, etc. During this period, prevention should be the main approach. In the early stage of disease onset, use 50% carbendazim, or 50% thiophanate-methyl 800-fold solution, and spray 2-3 times for control.

2. A common pest of Dendrobium huoshanense is the snail. Snails generally appear from March to November and like to eat the tender stems and leaves of Dendrobium. During this period, 5% granular Meta (metaldehyde) can be applied, about 1 kilogram per mu each time.