Culture methods of Cryptomeria fortunei

Araucaria, also known as Australian cedar, Araucaria squamosa, Araucaria tower-shaped, etc., are arbors of Araucariaceae, cedar, Japanese golden pine, Sequoia americana, and Pseudolarix are known as the world's five major park species, originating in the southeast coastal areas of Oceania. Now, Guangdong, Fujian, Taiwan, Hainan, Yunnan, Guangxi and other places in China are cultivated in open fields. Let's take a look at the cultivation methods of Araucaria.

Growth Habits of Araucaria araucaria

Araucaria likes light, seedlings like shade, warm and humid climate, not tolerant of drought and cold. Love fertile soil. It grows fast, sprouts strongly and bears strong wind. Winter needs plenty of sunshine, summer to avoid strong light exposure, fear of northern spring dry wind and summer sun, in the temperature of 25~30℃, relative humidity of more than 70% of the environmental conditions grow best. Potted requirements loose fertile, humus content is higher, drainage permeability strong culture soil.

Breeding method of araucaria

1. Sowing: Araucaria seed method is propagated due to solid seed coat and low germination rate, so it is best to break the seed coat before planting to promote its germination. In addition, the seedlings planted are susceptible to pests and diseases, so the soil used should be strictly disinfected. Seeds are best germinated by sand beds or the above-mentioned shell breaking sowing method to improve the germination rate of seeds, generally about 30 days can germinate.

2, cuttage: Araucaria cuttage propagation is relatively easy, is widely used. Generally in spring, summer cuttings, but must choose the main branch for cuttings, with lateral branches for cuttings grown plants askew and not straight. The cuttings are 10 to 15 cm long and take root in about 4 months at 18 to 25 ° C and high air humidity. Soaking the base of cuttings with 200ppm IBA for 5 hours before cutting could promote early rooting.

Transplantation Technique of Araucaria

1. Root protection: Araucaria seedlings have few lateral roots and fine hairy roots. If you don't pay attention, they will shrivel and dry up. Therefore, it is very important to protect the roots of seedlings. First of all, it should be transported with soil in pots and keep the original culture soil moist. Secondly, seedlings should be planted immediately after purchase. If it is too late for planting, they should be placed in a cool and humid place and not exposed to the sun to protect seedlings, especially roots. In addition, when the winter temperature is low, the roots are easy to freeze during transportation, so attention should be paid to heat preservation.

2. Fine planting: When planting Araucaria, the seedlings should take the original soil as much as possible. The planting soil should be loose and fine. Do not press the root soil too hard. After planting, irrigate enough root water. In addition, seed-seeded araucaria seedlings have long straight roots and should be planted deeper to avoid root exposure and lodging, affecting survival.

3, insulation: araucaria is not cold-resistant, if winter or early spring to buy seedlings planting, in addition to the transportation process to pay attention to antifreeze, after planting also have insulation measures, such as planting in the greenhouse, or with plastic film arch cover. At the same time, araucaria is a shade-tolerant flower, seedlings are more afraid of exposure, so immediately after planting shade.

4, broken: Araucaria seedlings tissue is young, easy to break, can take the following measures to remedy. Root-cut seedlings can be washed with clean water and inserted into plain sand. After 1~2 weeks at appropriate temperature, they can re-root from the cross section. After the roots are developed, they can be planted again. For the seedlings with broken buds and broken stems, the value can be fixed as usual, and new buds will sprout after a certain period of time after survival.

Culture method of araucaria

1. Soil: Araucaria araucaria is cultivated in Guangdong, Fujian, Hainan, Yunnan and Guangxi in China. The Yangtze River Basin and its northern cities are potted plants and overwintered in greenhouses. The cultivation pot soil is most suitable for 1/3 of rotten leaf soil, garden soil and river sand plus Shaoli base fertilizer.

2, watering: Araucaria nature like wet environment, for this dry season and summer should pay attention to regular spraying of water to the leaves, both to increase air humidity, but also to keep the leaf color fresh and bright, its photosynthesis is very beneficial. During the maintenance period, watering should be appropriate, and watering in summer should be sufficient, so as to supplement the transpiration needs of leaves in time and avoid drought damage. But watering also can not be excessive, so that the basin soil water, usually to keep the basin soil often wet is appropriate.

3, light: Araucaria like sunshine, the northern region generally moved to the south balcony or courtyard sunny place in early May, pay attention to proper shade after summer, avoid exposure. Culture in northern areas should be moved indoors at the end of September and early October, placed in sunny places, and watered under control.

4, temperature: Araucaria like warm and humid climate, not resistant to drought and cold, can grow in a variety of different temperatures, but cold resistance is not strong, the optimal temperature for growth is 7~24℃, such as temperature rise to increase the air humidity around the plant.

Fertilization: Araucaria grows rapidly, so in its vigorous growth season, it needs to be applied frequently to supplement the nutrients needed for its growth. Generally from the spring bud germination, pay attention to topdressing 1~2 times a month decomposed thin cake fertilizer water for its absorption and utilization, in order to grow healthy.

6, pruning: araucaria easy to appear lower branches and leaves gradually withered off the phenomenon, resulting in the whole plant top-heavy, affecting the beauty, in the maintenance of careful management, necessary pruning.

7. Insect pests: The diseases of Araucaria araucaria include leaf spot disease, branch blight disease and root nodule disease. Leaf spot disease and branch blight disease can be controlled by spraying 800 times solution of Sichuan 70% methyl thiophane or 500~600 times solution of 65% zinc wettable powder. Canker disease can be disinfected with 100 times solution of 40% thiram or 1000 times solution of potassium permanganate. Root nodule disease can be soaked with 1000 times solution of streptomycin. Insect pests are mainly caused by scale insects. When a small amount occurs, wash the leaves with clean water. When it is serious, spray 40% omethoate emulsion 500~1000 times.