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Method for improving coastal saline-alkali wetland by papermaking waste

A papermaking waste and saline-alkali technology, which is applied in the fields of land preparation methods, chemical instruments and methods, and applications, can solve the problems of long improvement time, environmental pollution, and large investment, achieve good economic benefits, reduce salt content, and improve The effect of content

Active Publication Date: 2010-11-17
BINZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods all have problems such as excessive investment, long improvement time, and easy to cause environmental pollution.

Method used

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  • Method for improving coastal saline-alkali wetland by papermaking waste
  • Method for improving coastal saline-alkali wetland by papermaking waste
  • Method for improving coastal saline-alkali wetland by papermaking waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The coastal saline-alkali wetland is improved according to the following steps: in March, the papermaking waste composed of grass powder and sludge is applied to the coastal saline-alkali wetland with the basic properties of soil as shown in Table 1, and the papermaking waste ( grass powder and sludge) and the soil of the coastal saline-alkali wetland are fully mixed to complete the improvement of the coastal saline-alkali wetland. The wetland is a heavily degraded reed wetland, and the reed vegetation coverage (specifically, the base coverage) is 0.

[0015] The application rates of the papermaking waste grass powder and sludge are respectively: in treatment 1, the application rate of grass powder is 500kg / mu, and the application rate of sludge is 500kg / mu; in treatment 2, the application rate of grass powder is 700kg / mu, the application rate of sludge is 1000kg / mu; treatment 3, the application rate of grass powder is 700kg / mu, and the application rate of sludge is 15...

Embodiment 2

[0023] Follow the steps below to improve coastal saline wetlands:

[0024] In March, the papermaking waste grass powder was applied to the coastal saline-alkali wetland whose basic soil properties were shown in Table 3, and the papermaking waste grass powder was fully mixed with the soil of the coastal saline-alkali wetland to complete the process. Describe the improvement of coastal saline-alkali wetlands. The main wetland plants in this wetland test area are reeds, which are moderately degraded reed wetlands, and the reed coverage is 60.3%.

[0025]The application rates of grass powder in the papermaking waste are: 500kg / mu for treatment 1; 800kg / mu for treatment 2; 1500kg / mu for treatment 3. The depth applied to the coastal saline-alkali wetland is 20cm.

[0026] Sampling was carried out in October to determine its main soil physical and chemical properties. Among them, soil soluble salts are measured by gravimetric method, soil organic matter is measured by high tempera...

Embodiment 3

[0034] Follow the steps below to improve coastal saline wetlands:

[0035] In March, the papermaking waste sludge was applied to the coastal saline-alkali wetland whose basic soil properties were shown in Table 5, and the papermaking waste sludge was fully mixed with the soil of the coastal saline-alkali wetland to complete the process. Describe the improvement of coastal saline-alkali wetlands. The wetland is a heavily degraded reed wetland, and the reed vegetation coverage (specifically, the base coverage) is 0.

[0036] The application amount of the sludge is respectively: 1000kg / mu for treatment 1; 1500kg / mu for treatment 2; 2000kg / mu for treatment 3. The depth applied to the coastal saline-alkali wetland is 20cm.

[0037] Sampling was carried out in October to determine its main soil physical and chemical properties. Among them, soil soluble salts are measured by gravimetric method, soil organic matter is measured by high temperature external heat potassium dichromate ...

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Abstract

The invention discloses a method for improving a coastal saline-alkali wetland by papermaking waste. The method comprises the following steps: applying the papermaking waste with grass clippings and sludge to the coastal saline-alkali wetland to be improved, and evenly mixing the papermaking waste with the soil of the coastal saline-alkali wetland to be improved, wherein the papermaking waste is chosen from at least one of the grass clippings and the sludge, the application rate of the papermaking waste with the grass clippings is not more than 1500kg / mu, the application rate of the papermaking waste with the sludge is not more than 2000kg / mu, and the depth applied to the coastal saline-alkali wetland to be improved is 20cm. The method can effectively improve soil structure, improve the content of available nutrients and organic matters in the soil, lower salt content in the soil, and promote recovery of wetland vegetation.

Description

technical field [0001] The invention belongs to the field of coastal saline-alkali wetland improvement, and in particular relates to a method for improving coastal saline-alkali wetland by using papermaking waste. 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 s...

Claims

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Application Information

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IPC IPC(8): A01B79/00C09K17/40C09K101/00C09K109/00
Inventor 陆兆华谢文军于妍夏江宝孙景宽刘京涛刘庆
Owner BINZHOU UNIV
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