Land preparation method for efficient survival of camellia oleifera forest

Abstract

The invention discloses a land preparation method for efficient survival of a camellia oleifera forest, and relates to the technical field of economic forest culture and management. The land preparation method comprises the following steps: (1) selecting a forest land; (2) cleaning the forest land and performing slash burning; (3) terracing and digging ditches; (4) excavating flood control ditches. The land preparation method has the advantages of improving soil characteristics and promoting early-stage rapid growth of seedlings, and can effectively prevent water and soil loss; the water-retaining property and fertilizer-retaining property of soil are good; the initial planting survival rate of camellia oleifera seedlings is improved; a solid foundation is provided for stable yield and high yield of the forest.

Description

technical field [0001] The invention relates to the technical field of economic forest planting, in particular to a soil preparation method for efficient survival of Camellia oleifera forest. Background technique [0002] Camellia oleifera is one of the world's four major woody oil tree species. It grows in the mountains and hills in the subtropical regions of southern China and is a unique pure natural high-grade oil plant in my country. Mainly concentrated in Zhejiang, Jiangxi, Hunan, and Guangxi, the national annual output is only about 200,000 tons. Camellia oleifera, oil palm, olive and coconut are known as the world's four largest woody edible oil plants. The unsaturated fatty acid content of camellia oil is as high as 90%, which is much higher than that of rapeseed oil, peanut oil and soybean oil. It is twice as high as olive oil in vitamin E content, and contains specific physiologically active substances such as camellia glucoside, which has extremely high nutritio...

AI Technical Summary

Problems solved by technology

[0003] Although Camellia oleifera trees are treasures, most of them in southern China are operated by small workshops. In addition, some high-yielding varieties that were previously selected and bred were unable to keep up with the silviculture measures, which led to the degradation of the varieties, which in turn affected the output. Camellia oleifera is mostly a traditional business model with self-employed as the main unit, and its area is relatively small

In the true sense, high-standard intensive production only started after 2008 with a small number of large households or units. They used the traditional method of land preparation for intensive production of Camellia oleifera: hole (big hole) reclamation, belt reclamation, the advantage of hole reclamation lies in the early stage The input cost is relatively small, and it is suitable for small-scale Camellia oleifera silviculture production (such as small-scale forestry production by a single farmer); the disadvantage is that it is difficult to manage Camellia oleifera forest land, the cost of management is high, water and fertilizer loss is serious, and the survival rate is low. Not high (generally 50-75%), seedlings grow slowly (generally, the average annual growth height is 40-60cm)

The advantage of reclamation is that the difficulty of forest land management is relatively low, and it is suitable for intensive forestry production; the disadvantage is that the initial investment cost is relatively high, and it is easy to cause soil erosion and even landslides. At the same time, due to serious soil erosion, the survival rate of afforestation is not Very high (generally 60-80%), the growth of seedlings is slow (generally, the average annual growth height is 50-70cm), and other economic losses caused by soil erosion (or landslides) are also relatively large

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