Planting technology of camphor tree

Cinnamomum camphor tree for Lauraceae camphor evergreen trees, I made in the south and southwest provinces, adapt to the altitude of 1800 meters below, in the south and southwest of the Yangtze River growth area up to 1000 meters above sea level, grow in the subtropical soil fertile sunny hillside, valley and river bank flat, has a very high cultivation value, let's take a look at Cinnamomum camphor tree planting technology bar!

The growth habit of camphor tree

Cinnamomum camphor tree more like light, slightly shade, like warm and humid climate, cold resistance is not strong, suitable for growth in sandy loam, more water and humidity, but when transplanting to pay attention to maintain soil humidity, waterlogging easily lead to rot root hypoxia and death, but not resistant to drought, barren and saline soil. Taproot developed, deep-rooted, wind-resistant. Strong germination and pruning resistance. It grows at a moderate speed, and its tree is huge like an umbrella, which can shade and avoid cold.

Seed collection of Cinnamomum chinense

Cinnamomum camphor tree fruit mature when self-shedding, there are birds pecking, every year from October to December will have mature seeds harvested, and then mixed sand storage, early March can germinate sowing. Seeds should be selected from 40~60-year-old mother trees with rapid growth, strong, obvious trunk, straight, high branches, developed crown, no diseases and insect pests, and many seeds. 7200~8000 seeds per kilogram, germination rate 70~80%, and sowing amount per mu 10~15 kg.

Soil preparation and fertilization for seedling

The seedling field of camphor tree is ploughed for the first time at the beginning of winter, and the second time before sowing, and sufficient base fertilizer is applied. The base fertilizer is generally 1500~2000 kg of decomposed manure or 50 kg of carbon amine, 50 kg of phosphate fertilizer and 150 kg of vegetable cake per mu, and then a high bed is built, generally 35~50 cm high and 1.2 m wide.

seed germination

Cinnamomum camphor trees need germination before sowing, can be soaked in warm water at 50℃, when the warm water cooled and then changed to 50℃ water repeated soaking 3~4 times, can make seeds germinate 10~15 days earlier. The row spacing of drilling is about 20 cm, and the sowing amount per mu is 10~15 kg. After sowing, it is covered with straw or plastic film to keep the surface soil of the seedbed moist so as to facilitate seed germination.

Tending and Management of Cinnamomum chinense

Cinnamomum camphor seedlings unearthed should be removed in time to straw or plastic film, to be seedlings grow a few true leaves can start thinning seedlings, seedlings about 10 cm high can be fixed seedlings. Camphora leaves about 20,000 seedlings per mu. After July, we should strengthen fertilizer and water management and loosen soil and weed frequently. Stop topdressing and irrigation at the end of autumn. Topdressing is generally 2~3 times, the first two times available urea 7~10 jin, the last time available urea 10 kg, phosphorus fertilizer 7.5 kg.

Cinnamomum mongolicum seedlings timely transplanting

The suitable transplanting time of Cinnamomum camphor is from middle and late March to middle and early April, and the transplanting density is about 1500 plants per mu. After transplanting, cut off the stem about 10 cm from the ground. When the bud grows to about 10 cm, set the main stem, cut off the redundant branch bud, and leave a relatively thick branch. 2000 kg manure applied to bed surface in winter. This 3-year-old seedlings DBH can reach 3 cm above.

Cultivation techniques of Cinnamomum chinense

The depth, length and width of camphor tree planting pit should reach 50~60 cm. The planting depth should be level with the root diameter of camphor seedlings. The mulch soil should be closely connected with the hole soil during planting. If the soil is not tight or solid, it will form hanging space. Whether it is cloudy or sunny planting camphor tree should be timely irrigation through a fixed root water, encounter dry, insolated weather to irrigate once every 7 days or so, 3 to 4 times in a row.

Control of diseases and insect pests of Cinnamomum chinense

1, powdery mildew: powdery mildew occurs more in nursery seedlings, in high temperature, humidity, seedlings too dense and poor ventilation conditions are most likely to occur, nurseries should always pay attention to environmental sanitation, appropriate thinning seedlings, or found a few diseased plants should be immediately removed or burned, occur with Baume 0.3~0.5 degrees of stone sulfur mixture, spray once every 10 days, three or four times in a row.

2, black spot disease: camphor tree seeds germinate after germination grow 1~4 leaves, easy to occur this disease. Disinfect seeds, soil and mulch when sowing. When the disease occurs, the burned seedlings are first removed and sprayed with 0.5% potassium permanganate or formalin twice or thrice to prevent the spread.

3. Camphor sawfly: Camphor sawfly has many generations in a year, and its damage period is long. The one-year seedlings are seriously damaged and die, resulting in death. After afforestation, the tender leaves at the upper part of the tree crown are often eaten up, which seriously affects the growth of trees. The seedlings can be sprayed with 0.5 kg of rhododendron or tripterygium wilfordii powder and 75~100 kg of water, or sprayed with 90% trichlorfon or 50% marathon emulsion 2000 times each.

4, leaf roller moth: camphor leaf roller moth several generations a year, March camphor tree shoots out, the first generation larvae hatching with 90% trichlorfon, 50% dibromophosphorus emulsion, 50% marathon emulsion 10000 times spray, every 5 days once, two or three times in a row, can kill larvae. If the larvae have eaten into the new shoots, they can also be sprayed with 40% dimethoate emulsion 200~300 times. Nursery or small area of woodland, can be collected in winter litter burned to eliminate overwintering pupae.

5, camphor nest borer: generally harm camphor seedlings and young trees under 20 years old, two generations occur a year. Larvae have just begun to form a nest, with 90% trichlorfon 4000~50000 times spray, you can kill. If the larvae have formed a nest, it is best to plant them and burn them.

6. Zhanglongicorn beetle: adult spawning period (early May to early June) with lead wire brush spawning scars, thorn eggs or newly hatched larvae. The injured branches were cut off manually, and then dichlorvos and other chemicals were injected into the discharge hole to kill the larvae.