What are the seed planting methods of Amaryllidaceae? What about the long spots on the leaves? What are the prospects for planting development?

Magnolia, also known as Lycoris radiata and Lycoris davidiana, is an ornamental flower of the genus Lycoris of the family Amaryllidaceae. The magnolia has a high ornamental value, and it is often potted in greenhouse in China. Ramet or seed reproduction. Do you know what are the seed planting methods of Cymbidium? What about the long spots on the leaves? What are the prospects for planting development? The orchids with the same efficacy are also laughing magnolia, cultivated in greenhouses all over the country, with various designs and colors. The life span of magnolia is several decades or more. Gentleman orchid is the city flower of Changchun.

I. seed planting method of Cymbidium

1. Seed selection: after the fruit is ripe, cut off the whole fruit arrow from the bottom of the arrow and dry it in a sunless place for about 15 days. Peel off the seeds, select those with full seeds and bud eyes, wrap them with gauze and place them in a sunless ventilated place for 3 days for soaking and sowing.

two。 Soaking and sowing: peel off the seeds, select those with full seeds and bud eyes, wrap them with gauze and place them in a ventilated place without sunlight for 3 days for soaking and sowing.

After wrapping the seeds from the fruit balls with gauze for 3 days, soak the seeds in a glass jar of about 25 degrees for 1-5 days until sprouting (the seeds are completely submerged in water on the first day, keep a small amount of water of about 1 mm after the second day, and the cylinder head is moisturized with transparent plastic sheeting), put them into breathable plastic baskets containing fresh sawdust sterilized by thick 10cm (seeds covered with sawdust 1cm) to accelerate germination at a temperature of 20-27 degrees and 25 degrees). Spray the right amount of water once a day to maintain humidity.

3. Sowing methods: there are a variety of sowing methods, but the materials are easy to find, the technology is not difficult, and the emergence rate is high, which is better than river sand sowing and sawdust sowing.

River sand sowing is to wash the fine-grained river sand with clear water and boil it with boiling water, then scrape it flat in the container, arrange the seeds on the sand surface with a distance of about 2 centimeters, and cover them with a thin layer of sand.

Sawdust sowing, is the medium thickness of miscellaneous wood sawdust, stir-fry or steam disinfection, put into the container, the thickness of 7 cm to 10 cm. The bud eyes are downward, the spacing is the same as before, cover the seeds with sawdust, pour water thoroughly, and cover the mouth of the container with film or glass.

4. Accelerating germination: after 30 days of germination, the seeds have grown long young roots and leaf sheaths. Interval 1cm, leaf sheath exposed and densely implanted in flowerpots in the same direction, temperature maintained at 20-27 degrees (about 25 degrees), proper light, regular spraying of water according to humidity.

Second, what about the long spots on the leaves of Cymbidium

1. The cause of long spot

Improper fertilization

The application of unfermented fertilizer makes the bacteria multiply in large numbers in the basin soil.

Improper soil exchange

The basin soil has not been changed for a long time, the nutrients in the basin soil are reduced, and there are pathogenic bacteria. If the plant has a wound, it is easy to get infected with bacteria. In addition, the replacement of the new soil is inappropriate, contains germs, or the soil is relatively unripe.

Imbalance of nitrogen, phosphorus and potassium in fertilizer

Especially when the fertilizer is low in potash or fertilized, the fertilizer is directly in contact with the root. Rust spots on individual leaves are often caused by direct contact with a succulent root or a wound.

2. Solution

Take precautions

First of all, it is necessary to prevent the rotting roots of the plant so that the leaves can get adequate nutrition, and then it is necessary to put an end to trauma and prevent the spread of wounds, the amount of fertilizer applied must be well controlled, and hypertrophy must be avoided. Adult flowers in summer should not water the false bulbs, and attention should be paid to ventilation in summer. cooling to strengthen management, regular spraying of carbendazim, chlorothalonil, methyltobu, agricultural streptomycin and other sterilization drugs for prevention and treatment That is, it can reduce the occurrence of leaf spot disease and leaf yellow disease.

Replace the new soil

The method of soil exchange can be used to control leaf spot disease. When changing the soil, wash the fleshy root with clean water, dry it and then serve it in the basin. If some leaves are rotten badly, just cut them off.

Spray medicament

Germ is a kind of organic sulfur-arsenic compound fungicide, which can control a variety of diseases, such as white rot, brown spot, stem spot and so on. The solution with a concentration of 500 × 1000 times can be sprayed once every half month and sprayed continuously for 3 times for 4 times. Sterilization is unique to toxicity, so pay attention to safety when using it.

Third, analysis on the development prospect of planting Cymbidium.

In recent years, the flower industry of Magnolia has developed rapidly. It is not only developed in Changchun, Anshan, Shenyang, Harbin and other northern cities, but also widely cultivated in North China, Northwest China and South China. The rapid development of Cymbidium industry has exceeded people's expectations and imagination. However, most of the existing production bases are household-based, and the real specialized production bases are very few, which brings a lot of difficulties to the mass production, sales and export of Magnolia. The contradiction between small-scale production and the demand of the big market can only be solved by means of industrialization. In Belgium, where the industrialization of Cymbidium is relatively advanced, modern greenhouse, factory management, conveyor belt for transport, special equipment for soil exchange, computer control for watering and fertilization, and soilless culture substrate are used in Belgium. All the orchids produced are supplied to European countries. In China, the development of the industrialization of Cymbidium should be suitable for China's national conditions. First, we should rely on the support of the government; second, we should achieve a larger production area and a production base for famous-brand products; third, we should have scientific research and development centers for new varieties; fourth, we should have a professional marketing network and after-sales service system; and fifth, we should develop new application fields of gentleman orchids, such as the research of fresh cut flowers, the development of medicinal value, and so on. Only in this way can the production of Cymbidium move towards specialization, scale, and finally connect with the international flower market and realize the industrialization of Cymbidium. In a word, only by combining the advantages of variety and cultivation level with industrial production, can Chinese magnolia always be in the leading position in the world.

Time: 2019-03-18 Click: