Composite desertification control method

A technology for tree species and sandy land, applied in the field of compound sand control in deserts, can solve problems such as unsatisfactory effects, achieve good wind and sand fixation effects, and control soil wind erosion, sandification and water loss.

Inactive Publication Date: 2009-11-18
INST OF FORESTRY CHINESE ACAD OF FORESTRY
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods have played a certain role in sand fixation, the effect of controlling sandy land with relatively large fluidity is not very satisfactory.

Method used

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  • Composite desertification control method
  • Composite desertification control method

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Experimental program
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Embodiment Construction

[0021] The present invention will be described in detail below.

[0022] Use gramineous plant oats and shrub species poplar and Caragana microphylla for afforestation on the flowing sandy land. Oat is an annual plant. After sowing in the sandy rainy season, it can develop into a complete individual in a short time. After the year dies, the dead branches and underground roots on the ground can still be kept for about 1 to 2 years, which is very good. The windproof and sand-fixing effect provides sand barrier protection for the relatively slow-growing Yangchai and Caragana microphylla, enabling them to grow rapidly in the second year. The mixed seeding of shrub and grass adopts 1.5×1.5 (m), 2×2 (m) grid-like direct seeding, the ratio of shrub and grass seeds is 1:10 (the ratio can be 1:1~20), and the sowing amount per mu is about 22 catties. The sand dunes have a large slope, and the grid can be reduced according to the actual situation to enhance the ability to resist wind eros...

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Abstract

The invention discloses a composite desertification control method which comprises mixedly sowing annual herb tree species and perennial shrub species in the floating sand lands. In the invention, by mixedly sowing herb and shrub species in the floating sand lands, when the annual herbs wither to death, the overground deadwood and the underground root systems can retain for around 1 to 2 years and have good windbreak and sand-fixing effects, thus providing plant sand barriers for the shrubs which grow slowly and ensuring that the shrubs can grow rapidly in the second year. The composite sand consolidation structure featuring difference in growth time can effectively control soil drifting and desertification and soil erosion, reduce cost and improve desertification control efficiency dramatically.

Description

technical field [0001] The invention relates to a compound sand control method for deserts. Background technique [0002] At present, China's desertified land covers about 1.7 million square kilometers, and it is spreading at a rate of nearly 3,400 square kilometers every year. In order to improve the environment and prevent desert migration, people have adopted many sand control methods, such as mechanical methods, including building anti-sand walls, planting hay, etc.; and sowing grass seeds to fix sand through vegetation. Although these methods have played a certain role in sand fixation, the effect of controlling sandy land with relatively large fluidity is not very satisfactory. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a compound sand control method that can effectively control wind erosion and desertification of soil and is easy to operate. [0004] In order to solve the above-mentioned problems, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00A01G23/00
CPCY02A40/22
Inventor 吴波王玉华钟贵廷杜敏
Owner INST OF FORESTRY CHINESE ACAD OF FORESTRY
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