Methods and matters needing attention of sowing and propagation of cycad

Cycad is a common foliage plant, and many flower lovers like to cultivate it by themselves. In fact, the cultivation of cycads is not difficult, artificial reproduction can also use the method of sowing, the editor will introduce to you the methods of sowing and reproduction of cycads and points for attention.

Cycad

1. Seed treatment before sowing after the seeds were harvested at the end of autumn, the seeds were stored in a refrigerator or freezer of-20 ℃ or treated with sand storage, and the seedlings were raised in open field or hotbed from March to April in spring. Cycad is a hard-shelled seed, which is not easy to be breathable and permeable. Before sowing, the apical cortex of the seed must be cut off with branch shears to expose the kernel, and then sow, which can promote early germination.

2. the water retention of sandy soil for sowing is poor, clay and heavy soil is not suitable for sowing, the soil is too wet when the water is large, and the soil is dry and hard when there is little water. The ideal soil is a mixture of fine sand and peat soil.

3. The sowing method can be sowed on demand, and the buried depth is twice as deep as the seed, not too deep or too shallow. The indoor pot soil should be pressed flat, put the seed cover soil and soak the basin, wait for the basin surface soil to be fully moist, put it in a warm and sunny place, and cover the basin with a piece of glass to maintain a higher temperature and humidity. Generally, it begins to take root and sprout about 40 days after sowing.

4. Management after sowing the soil should be kept fully moist after sowing, but there should be no stagnant water. It is best to spray water with a fine-hole spray can at the initial stage of sowing. After the seeds germinate, the mulch should be removed to fully absorb the light.

5. Upper pot transplanting begins when the seedling root changes from white to yellowish brown. The basin soil should be loose and usually mixed with 2 parts of peat soil and 1 part of fine sand. At the initial stage, 3 seedlings could be transplanted in each pot, and then transplanted individually one year later. Cycads like acid fertilizer and water, and fermented alum fertilizer water is applied every half a month (0.2% ferrous sulfate is added to the fertilizer water), which can promote plant growth.

Propagation methods of Cycas

Sowing and propagation of cycad

After collecting cycad seeds at the end of autumn, cycad seeds can be collected and sowed or stored in sand storage until the spring of the following year; cycad seeds are suitable for pot-on-demand sowing, and the depth of covering soil is about 2 cm. After sowing, they can germinate at a temperature of 30-33 ℃, usually about two weeks. Cycad seedlings need to be cultivated for 2-4 years before transplanting.

Tillering Propagation of Cycas

It is suitable for early spring between January and February.

Take tiller buds

The sprouting site of the tiller bud of cycad is concentrated on the base of the stem and the cadre, so it is suitable to choose the full tiller bud for more than 3 years or the tiller bud with 4 leaves and 5 leaves as the propagation material. Do not choose tender tiller buds, it is not easy to survive. Cut the tiller bud from the root with a sharp knife and pay attention to it carefully to minimize the damage to the stem bark. The rooted tiller buds can be directly planted in the drainage and well-ventilated culture soil rich in humus for management. if they are unrooted tiller buds, they should be hung in a cool and ventilated place for about 3 days. wait until the incision dries a little before root treatment.

Urge the root

Before planting, it is best to deal with the wound to avoid its decay, generally can be coated with plant ash, sulfur powder and so on. After that, it was planted in plain sand, and the depth of the substrate was about half of the height of tiller buds, watered once, and then kept indoors in a place with light to maintain. Generally, new roots can germinate in about 2 months, and 1-2 new leaves can be produced in about 4 months.

Transplant

When the new leaves are all unfolded, they can be transferred into the culture soil for management. The culture soil is generally suitable to be mixed with rotten leaf soil, mycorrhizal soil, river sand and calcium magnesium phosphate fertilizer according to the ratio of 9: 4 / 6 / 1.

Trunk cutting Propagation of Cycas

Cut the trunk of the cycad into sections around 10cm and bury it in the sandy soil with a depth of about 4-6 cm to keep the soil moist. After the cadres send out new buds, they can be planted separately.

Culture methods and matters needing attention of South China Cycas Chinese scientific name South China Cycas

Latin name Cycas rumphii Miq.

Also known as Cycas prickly and Cycas longwei

The plant kingdom.

Gymnosperms phylum

Cycas

Cycads

Kesutiaceae

Belong to Cycas

Grow South China cycad

Distributed from southern Asia to northern Oceania

South China cycad (Latin name: Cycas rumphii Miq.) is also known as Cycas przewalskii and Cycas longwei. It is cultivated in all parts of South China. Produced in Indonesia, northern Australia, Vietnam, Myanmar, India and Madagascar in Africa. The type specimens were collected from Indonesia. It is an evergreen tree. Sex likes bright light and is born in a warm, dry and well-ventilated place. Reproduce by sowing or tillering. It can be used as medicine. For viewing, the young leaves are edible, the pith contains starch, and can be eaten.

1. Morphological characteristics.

Trunk cylindrical, 4-8 m high, sparse to 15 m, distally with residual petiole, branched or unbranched. The pinnate leaves are 1 to 2 meters long, the leaf axis is nearly round or triangular in cross section, the petiole is 10 to 15 centimeters or more long, often with three obtuse edges, short thorns on both sides, and the distance between thorns is 1.5 to 2 centimeters, sparse and unarmed. Lobes 50-80 pairs arranged in two rows, long lanceolate or strip-shaped, slightly curved or straight, leathery, green, glossy, midvein retuse on both surfaces, apex acuminate, margin flat or slightly reflexed, sparse microwave, base asymmetric, upper side sharply narrow, lower side wider or narrower, decurrent growth, pinnate lobes in the middle of leaf rachis 15 cm long and 10 mm wide. Male cones have short stalks, elliptic moments, 12 cm long, 5 cm in diameter, microspore leaves cuneate, 2.5 cm long, apically truncate, densely red or brownish tomentose, slightly retrorse or not retrorse, with curved obtuse tip, anthers 2-5 aggregates. The megasporium is 20-35 cm long, initially tomentose, then gradually falling off, the lower stalk is long, often quadrangular, on each side of the upper part there are 1-3 (mostly 2-3) ovules, 4-8 ovules, the ovules are nearly smooth, half-trapped in the hole when young, the upper top piece is narrowly spatulate or lanceolate, the apex has a subulate tip, and there are several slender short cleft teeth on both sides. Seeds oblate or ovoid, apex sometimes retuse, center slightly convex, 3-4.5 cm in diameter, mesocarp woody, with two ridges. The flowering period is from May to June and the seeds mature in October.

2. Growth habits

Sex likes bright light and is born in a warm, dry and well-ventilated place. Not resistant to cold, slow growth. The soil should be fertile and slightly acidic sandy soil.

3. Geographical distribution

It is cultivated in all parts of South China. Produced in Guangdong, Guangxi, Hainan and southern Yunnan. It is distributed in Indonesia, northern Australia, Vietnam, Myanmar, India and Madagascar in Africa. The type specimens were collected from Indonesia.

4. Reproduction and cultivation

Reproduce by sowing or tillering. The sowing method is collected and stored at the end of autumn and sparsely sown in spring. Deeply covered with soil, it can germinate in 2 weeks under the high temperature of 3033 ℃. It is feasible to transplant after 2-3 years of culture. The tillering method was carried out after the growth stopped in winter and the small buds were cut off from the rhizosphere and cultured. If the bad bud is not easy to sprout, you can cover a flowerpot so that it can not see the sun, and then gradually see the light after the leaves are sent out. The method of burying and inserting is to cut the stem of cycad into thick pieces of 10~15cm and bury them in sandy soil, waiting for new buds to be sent out around them, then they can be planted separately. This method should be careful not to pour water, otherwise it is perishable.