Where does agarwood usually grow?

Introduction to the origin of incense, where does Aquilaria sinensis generally grow? After reading it, you will know more about agarwood.

About a dozen countries and regions in the world have planted or planted aloes in small quantities, mainly in India, Cambodia, Myanmar, Thailand, Laos, Viet Nam, Malaysia, Indonesia, China and other countries. The agarwood made in China is produced in Hainan, Guangdong, Guangxi, Yunnan, Hongkong and Taiwan Province Province. "I made a special trip to Hainan last year to inspect the forest in its original state. With the help of local experts, I saw a rare agarwood forest, which is very rare. " Shi Zhengdong said that agarwood has high requirements for the growth environment. Because it belongs to Daphne Aquilaria, the annual temperature needs to be between 19℃ and 34℃. It needs plenty of light, but it can't grow in direct sunlight for a long time, and it is suitable for living among other trees. It also needs a slightly acidic soil condition with high humidity and sufficient water.

The fragrant trees of different varieties of Aquilaria sinensis are distributed in different countries and regions. Although they have the same ancestor, they are different because of their different growing environments. Aquilaria sinensis, which grows in Malaysia, Singapore and Indonesia, is commonly known as "Sin Chau God". Those who grew up in Vietnam and Laos are called "Qi Shennan"; The agarwood grown in Hainan and Guangdong in China is called "agarwood" and "daughter fragrance". There is also a story about this "daughter fragrance". According to legend, in ancient Dongguan, agarwood was once produced in large quantities. At that time, there was no perfume, so the local girl put on a good agarwood and hid it in her arms. Gradually, because of this custom, agarwood is called "daughter fragrance".

1 planting requirements

Soil preparation: Before planting the mountain, the mountain should be burned or refined, weeds and miscellaneous trees on the mountain should be removed, and hole-like planting should be carried out. Where conditions permit, it is best to plant it in terraces or belts. About 160 plants were planted on a plot of 667m2 with a row spacing of 2m×2m. If it is a place with good fertilizer and water conditions, the planting density can be appropriately smaller, with the plant spacing of 2m×3m and 667m2 planting 1 10 plants; If it is a place with poor fertilizer and water conditions, the planting density should be properly dense, and the plant spacing should be 1.5m×2m, and about 220 plants should be planted in 667m2. The specifications of the planting hole are length× width× height =40cm×40cm×30cm. Of course, planting in the mountains is labor-intensive and difficult. In order to save time and effort, we can dig a smaller planting hole to accommodate seedlings without applying base fertilizer.

2. Planting time and method

(1) Planting time: It is best to be in February-March of the lunar calendar, because the weather is getting warmer, the temperature is not high, and the rain is gradually increasing. At this time, planting saplings is easy to survive.

(2) Planting method: At present, the seedlings of Aquilaria sinensis cultivated in the nursery are generally equipped with nutrition cups, and the nutrition cups should be removed before planting such seedlings. If there is no nutrition cup bag, most of the leaves should be cut off before planting, leaving only a few leaves to plant with the seedlings. Because it takes too much manpower and material resources to plant and apply farmyard manure in mountainous areas, farmyard manure cannot be used as base fertilizer, and NPK compound fertilizer can be advocated as base fertilizer. When returning soil into mud, each planting hole is mixed with 15kg NPK compound fertilizer and a small amount of planting hole topsoil, which is backfilled at the bottom of the planting hole, then backfilled with topsoil and finally backfilled with subsoil. In particular, direct contact between compound fertilizer and root system should be avoided, and the mixed soil of compound fertilizer and topsoil should be kept at a distance of 15 ~ 20 cm from root system to avoid compound fertilizer burning out and burning root system. When planting seedlings, straighten the root system, make the root system naturally extend, make the root neck flush with the ground, properly compact the topsoil, and the whole backfill soil is slightly higher than the root neck by 3cm. When planting, it is recommended to buy seedlings planted in Daying cup bags. For example, seedlings planted in Daying cup bags are more likely to grow when the height exceeds1m.

2. Post-planting management

(1) Fertilization: The seedlings of Aquilaria sinensis grow slowly and need sufficient nutrition to promote their rapid growth. Trim NPK compound fertilizer is applied twice a year for 3 ~ 5 years after planting, and it can be applied in four directions in February ~ March and June ~ July of the lunar calendar every year. The distance between fertilization and trees is very important. If it is applied too much, the seedlings can't absorb fertilizer nutrients. If it is applied too close, it will easily cause the fertilizer to burn its roots, so in principle, it is better to apply it inside the canopy drip irrigation line. With the growth of trees, the amount of fertilization increased year by year. 1 year/plant 10kg NPK compound fertilizer, and 50g NPK compound fertilizer every time in the second year and thereafter. According to the survey, in April of 20 14, the seedlings of Aquilaria sinensis with tree height above 1m generally reached 6cm in ground diameter, 4 cm in DBH, and 3.5m in tree height, and in July of 20 16,

(2) Weeding and ridging: If you use shovels, hoes and other agricultural tools to weed, weed 3-4 times a year; Weeding with herbicides should be done 1 ~ 2 times a year. When weeding with herbicides, we should try to avoid the contact between the mixed water agent of herbicides and the branches and leaves of Aquilaria sinensis to prevent damage to the branches and leaves. After planting Aquilaria sinensis, the surface soil may be exposed due to long-term fatigue, rain erosion and gradual increase of roots. At this time, it is necessary to properly return the mud and combine fertilization to cultivate the soil.

(3) Pest control: According to observation, there are few diseases of Aquilaria sinensis, which are not harmful, mainly pests. General pests can be sprayed with common pesticides, such as trichlorfon, dimethoate water and Ainuo No.3. If it is a soft insect such as spring silkworm, it is best to use Ainuo No.3 pesticide to control it, and the effect is very good.

(4) Pruning: Aquilaria sinensis is a tree with fragrant trunk. To promote the growth of trunk, cut off excessive branches and side branches at an appropriate time, and clean up useless dead branches and diseases and pests in time, so that the trunk can absorb more nutrients and water and grow taller.

In addition, agarwood has a wide range of uses and high economic value. Due to a large number of precious agarwood, the primeval forest of Aquilaria sinensis has been seriously damaged, and the natural forest regeneration ability is weak. At present, there are only a few remaining plants in Guangdong Province, and the wild resources in the country are almost exhausted. Aquilaria sinensis is listed as a rare and endangered second-class protected plant by the state. Artificial plantations are scarce, the domestic agarwood production is seriously insufficient, the market demand is expanding, and the contradiction between supply and demand is prominent.