Application of cynodon dactylon to vegetation construction and ecological control in large-depth water flooded drawdown areas of reservoirs and riverbanks

A technology of ecological management and vegetation construction, applied in the fields of application, botany equipment and methods, horticulture, etc., can solve the problems that Bermudagrass has no empirical reports, etc., and achieve improved landscape quality, good economic benefits, and good resistance to poor soil Effect

Inactive Publication Date: 2011-04-20
曾波
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  • Abstract
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Problems solved by technology

[0006] To sum up, so far, there is no technology available for vegetation construction and ecological management in the drawdown zone and riverbank drawdo

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  • Application of cynodon dactylon to vegetation construction and ecological control in large-depth water flooded drawdown areas of reservoirs and riverbanks
  • Application of cynodon dactylon to vegetation construction and ecological control in large-depth water flooded drawdown areas of reservoirs and riverbanks
  • Application of cynodon dactylon to vegetation construction and ecological control in large-depth water flooded drawdown areas of reservoirs and riverbanks

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Embodiment Construction

[0017] In order to make the purpose, technical solution and advantages of the present invention clearer, specific embodiments of the present invention will be described in detail below.

[0018]In the spring of 2007, strong and well-grown bermudagrass plants were collected in the field, and bermudagrass seedlings were cultivated in the nursery by division propagation. After a year of growth and cultivation, a sufficient number of bermudagrass seedlings were bred for the construction of fading area vegetation.

[0019] In the spring of 2008, a total of more than 10 mu of test land was selected in the drawdown area of ​​the Three Gorges Reservoir on the Yangtze River. The water level in the drawdown area is controlled by the operation of the Three Gorges Reservoir. The water level varies between 145 and 175 meters, and the vertical height difference is up to 30 meters; The annual average temperature in the area is 17-19°C, the frost-free period is more than 330 days, and the ann...

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Abstract

The invention relates to the technical field of ecological environment protection and control, in particular to application of cynodon dactylon to vegetation construction and ecological control in large-depth water flooded drawdown areas of reservoirs and riverbanks. The vertical flooding depth h in the large-depth water flooded drawdown areas of reservoirs and riverbanks is more than 10m and not more than 30m. Tests prove that cynodon dactylon can survive after undergoing long-time and large-depth flooding and can grow well after recession and outcrop, can well adapt to the drawdown area environment alternating between land and water, can ensure the drawdown areas to have surviving vegetation all the year round, has strong capability of immobilizing the soils in the drawdown areas and capability of reducing washing of runoff, can reduce soil losses in the drawdown areas, simultaneously can serve as an excellent barrier belt between land and water at the reservoir bank, greatly improves the ecological environment quality in the drawdown areas and has good application prospect, wherein the longest continuous flooding period is 8 months and the largest vertical flooding depth is 30m.

Description

technical field [0001] The invention relates to the technical field of ecological environment protection and treatment, in particular to the application of Cynodon dactylon in the vegetation construction and ecological treatment of large-depth water-flooded reservoir drawdown areas and riverbank drawdown areas. Background technique [0002] There are currently more than 86,000 reservoirs in my country, many of which are seasonally regulated, yearly regulated or multi-year regulated. Due to the needs of power generation, shipping, and flood control, the water level of these reservoirs will fluctuate periodically due to scheduling. This leads to the formation of submerged and water-exposed sinking zones alternately on the bank of the reservoir. There are differences in the water level drop in different reservoir drawdown areas, and the water level drop in some reservoir drawdown areas can be as high as tens of meters. Due to continuous flooding, drawdown areas of reservoirs of...

Claims

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Application Information

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IPC IPC(8): A01G1/00
Inventor 曾波
Owner 曾波
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