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Method for promoting rejuvenation of littoral saline and alkaline wetland

A saline-alkali and wetland technology, which is applied in the direction of soil preparation methods, applications, agricultural machinery and tools, etc., can solve problems such as difficult to obtain improvement effects, and achieve the effect of improving the ecological environment

Active Publication Date: 2012-08-22
BINZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, for the rejuvenation of coastal saline-alkali wetlands, single-factor rejuvenation measures are mostly adopted. Because there are many influencing factors in the wild habitat, the rejuvenation of coastal saline-alkali land requires the interaction of multiple factors, so it is difficult to obtain a better improvement effect through a single factor

Method used

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  • Method for promoting rejuvenation of littoral saline and alkaline wetland
  • Method for promoting rejuvenation of littoral saline and alkaline wetland
  • Method for promoting rejuvenation of littoral saline and alkaline wetland

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. Experimental design: select a severely degraded coastal saline-alkali reed wetland, where the reed coverage is less than 5%, and the soil salinity is as high as 2.4%, and the wetland is deeply plowed. Two factors, plowing depth and plowing distance, were set up in the experiment, and 4 levels were designed for each factor. The experiment was designed in randomized blocks, and no deep plowing was used as CK. See Table 1 for details. Each treatment was repeated 3 times, a total of 51 experimental plots. The experimental treatment started in March, and the relevant indicators of each test area were investigated and analyzed in September of the following year.

[0024] Table 1. Deep plowing methods of coastal saline-alkali wetlands

[0025]

[0026] 2. Results and analysis

[0027] Table 2. Effects of deep plowing treatment on some biological indicators of coastal saline-alkali wetlands

[0028] deal with

Average plant height of reed (cm)

Co...

Embodiment 2

[0037] 1. Experimental design

[0038]The heavily degraded coastal saline-alkaline reed wetlands are selected, the reed cover is less than 5%, and the soil salinity is as high as 2.4%. In the experiment, five factors were set up: plowing depth, plowing distance, COD value, watering depth, and monthly watering times. Each factor was designed with 4 levels. The test adopted an orthogonal design. See Table 4 for details. Each treatment was repeated 3 times, with a total of 48 experimental plots, and the plots were arranged in an orthogonal design. Each plot was isolated by burying 30cm under geotextile to prevent mutual influence between experimental plots.

[0039] The experimental treatment started in March, and the relevant indicators of each test area were investigated and analyzed in September of the following year.

[0040] Table 4. Rejuvenation methods of coastal saline-alkali wetlands (orthogonal design)

[0041]

[0042] 2. Results and analysis

[0043] 2.1 Effect...

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Abstract

The invention discloses a method for promoting rejuvenation of a littoral saline and alkaline wetland, comprising the following steps of: deeply plowing the littoral saline and alkaline wetland to be rejuvenated, wherein plow scratching depth is 15-30 centimeters and preferably 25 centimeters, and a plowing distance is 50-80 centimeters and preferably 50 centimeters; after the deeply plowing step, also irrigating papermaking waste water into the littoral saline and alkaline wetland, wherein the COD (Chemical Oxygen Demand) value of the papermaking waste water is 200-800 mg / L and preferably 600 mg / L, the irrigating depth of the papermaking waste water is 5-30 cm and preferably 30 cm, irrigating time is 1-4 times every month and preferably 2 times, and dry is seen every time. The method is suitable for the littoral saline and alkaline wetlands with various degradation degrees, such as slightly, moderately and severely degraded littoral saline and alkaline wetlands, can enable the ecological environment conditions of rejuvenated wetland areas to be greatly improved by being utilized to rejuvenate the littoral saline and alkaline wetlands and has important application value.

Description

technical field [0001] The invention belongs to the field of restoration of coastal saline-alkali wetlands, in particular to a method for promoting the restoration of coastal saline-alkali wetlands. Background technique [0002] The Yellow River Delta is one of the three major deltas in my country, and it is also the latest and youngest delta to be developed. The wetlands of the Yellow River Delta were developed under the influence of neotectonic movement, sediment deposition of the Yellow River, local rainfall and runoff, and tidal currents. They are mainly distributed in the coastal areas, mainly tidal wetlands, forming a wide fan belt. The entire delta wetland type Rich and diverse landscape types (Xu J M. Studies on the ecological evaluation, proper protection and utilization of the wetland resource in Yellow River Delta. Journal of China Agricultural Resources and Regional Planning, 2001, 22(2): 45~49; Cui B S, Liu X T. Ecological character changes and sustainability m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B79/02
Inventor 陆兆华孙景宽夏孟婧谢文军夏江宝刘京涛刘庆
Owner BINZHOU UNIV
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