Cinamomum transgenic forest

Cinnamomum cassia. BL is a specialty of high economic value, Cinnamon essential oil is a precious material in the pharmaceutical and food industries. Cinnamon wood after peeling is used for house construction and household furniture. In addition, Cinnamon plantings are quite effective as they have thick, dense foliage and green foliage throughout the year. Cinnamon is also known as a multi-purpose tree and is one of the main crops in the program of 5 million hectares of forest to contribute to poverty alleviation for people in remote areas in some mountainous provinces in the years. by. In our country, Que is grown in Yen Bai, Quang Ninh, Thanh Hoa, Nghe An, Quang Nam and Quang Ngai, but not improved yet.

Yen Bai is the Cinnamomum region with the highest area and shell production in the country, mainly in Van Yen, Van Chan, Van Ban and Tran Yen districts in Yen Bai province. The area of Dai Son, Vien Son, Chau Que, Phong Du, Xuan Tam ... has an area of Cinnamon and shell production occupy about 70% of the entire region. Area for Cinnamon production is high, good yield, and good quality. The seed of Cinnamomum for reforestation programs are almost un-selected or selected based on the experience of the local people lead to the origin of seedlings put into production is not guaranteed. In order to achieve the objective of supplying seed in the short term, the implementation of the development of the transgenic forest system from good quality stands together with technical measures such as density adjustment, shrubs cleaning to improve the quality and productivity of mother trees is essential and important.

In the implementation of the project "Development of Special Economic Forest Species in the period 2011-2020", Institute of Foret Ecology and Environment in cooperation with Van Yen forest Enterprise has been transformed and accredited. (Decision No. 173 / QD-SNNPTNT dated 18/11/2015 of the Department of Agriculture and Rural Development of Yen Bai province). 04 ha of transgenic Cinnamomum, at plot 64, plot 31, sub-zone 160 of Dai Son commune, Van Yen district, Yen Bai province.

Based on the results of the implementation of silvicultural techniques in the transformed seed forest, Institute of Ecology and Environment has reported the actual results of the conversion of Cinnamon as follows:

1. Information on seed sources

- Source: Plantation forest

- Average age / planted year: 1998

- Source of initial seeds: Planting of seedlings

- Area: 4ha

- The growth indicators:

+ Average diameter: 19.56 cm

+ The average tree height (upper canopy): 11.64m

+ The average tree height (under canopy): 8.24m

+ Canopy diameter: 5.3m

- Initial density: 1000 trees/ha; Present density: 600 trees/ha

- The result of flowering, seedling: All the trees in the stand have flowers, fruits. Average fruits yield is 15 - 20 kg/tree.

2. Summary of applied silvicultural measures

a, Shrubs, grasses cleaning:

- Procedure:

Cleaning the shrubs, grasses by the comprehensive method.

- Method:

Using manual methods, cutting off all weeds and other grasses that affect the growth of seedlings.

b. Forest seedling transformation

- Remaining species:

Selected remaining trees are the best quality trees in the transition forest area. In particular, trees level I are the ones with the best yields in the stands as well as diameter, height, and morphology; trees level II are those with average yield, average diameter and height compared to those in the stand; trees level III are those with lower pod yields than the average of stands, with diameter and height growth as well as other morphological features that are below average.

- The number of thinnings:

First thinning (according to the designing profile) with the intensity of 40%, the implementation time is in December 2013. The density after thining: 600 trees/ha.

The thinned trees are pinched, curved, topped, poorly cut and the trees are not for the purpose of the transgenic forest.

- Cutting technique:

+ To be close to the foot (15-20cm from the ground), the direction does not affect the remaining trees (control the trees along with the contour line, avoid slope). After cutting down the tree, cut the branches first, cut the latter and then transport out of the forest.

+ After cutting, the logs must be removed from the forest stands.

+ There are three requirements for forest cutting: Do not cut two adjacent trees in one time, creating conditions for the canopy to have sufficient space for growth and development.

c. Tending the forest after thining:

+ Clean the grasses and shrubs completely, dig around the tree foot with a diameter of 1.5m.

+ Processing the data and making the transgenic forest profiles

e. Build anti-fire belts

Construction of an anti-fire road with a width of 6m surrounding the forest. Carrying out the removal of easy to burn species, keep other plants, hard-to-burn plants to prevent forest fire and clear fire materials.

f. Methods to protect seedling forest:

Establish a sign at the pathways going into the forest area, where regular inspections of pest and disease prevention, human and animal encroachment of the converted forest.