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Method for controlling lake plant siltation by white rot fungi

A technology of white rot fungi and lakes, applied in the field of environmental ecology, can solve the problems of microbial removal that have not been reported, and achieve the effect of strong applicability and solving environmental problems

Inactive Publication Date: 2012-09-12
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these inventions are only limited to the removal of pollutants in the bottom mud, and for the swamping of lakes, the microbial removal of aquatic plant residues has not been reported.

Method used

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  • Method for controlling lake plant siltation by white rot fungi
  • Method for controlling lake plant siltation by white rot fungi
  • Method for controlling lake plant siltation by white rot fungi

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0010] Carry out field research in lake areas to apply the technology in waters where aquatic plants are overgrown. Investigate the degree of water pollution, plant silting, and swamping in this area, and at the same time combine the thickness of the mud silt layer and the growth rate of plants at the end of the year to select the optimal dosage of the weed-inhibiting and controlling bacteria and the amount of weeding and controlling the bacteria. Best location.

[0011] Inhibition of weeds and control in bacterial agents: dilute white rot fungus spore suspension with basal medium, mix with reed debris, subpackage, cultivate and dry to make bacterial agents. The white rot fungus that the present invention adopts is Phanerochaete chrysosporium (Phanerochaete chrysosporium), which is derived from China Microorganism Culture Collection Management Committee, and the number is ACCC-30414.

[0012] 1. Preparation method of anti-grass and control bacteria agent:

[0013] Preparatio...

Embodiment 1

[0027] Aiming at the serious problem of swamping in the Baiyangdian lake area, the present invention is used to control the siltation of plant residues in the lake area. The dominant aquatic plant in this lake area is the emergent plant Phragmites reed, which grows in a large area and is slightly swampy, with a water depth of 1-1.5m. Each 200ml white rot fungus spore suspension (10 6 cfu / ml) and 300ml white rot fungus spore suspension (10 6 cfu / ml) was diluted with 70kg of sterilized basal medium and mixed with 85kg of reed debris sterilized by high temperature steam, packed in one bag per 4kg, cultured in a 30°C incubator for 10 days in a separate device, and then used in a 45°C oven Dry for 24 hours and set aside. In July, the weed-inhibiting fungus was applied to the bottom mud surface of the swampy lake. The decomposition of reed residue deposits were measured after one month, two months, and three months of application, respectively, and a control experiment without ad...

Embodiment 2

[0033] Aiming at the serious problem of swamping in Hengshui Lake, the present invention is used to control the silting of plant residues in the lake area. The dominant aquatic plants in this lake area are reeds and cattails. Cattails grow in a large area and are moderately swampy, with a water depth of 1.2-1.8m. Each 200ml white rot fungus spore suspension (10 6 cfu / ml) and 300ml white rot fungus spore suspension (10 6 cfu / ml) was diluted with 70kg of sterilized basal medium and mixed with 80kg of high-temperature steam sterilized sawdust, packed in a bag of 4kg, cultured in a 30°C incubator for 10 days in a separate device, and dried in a 45°C oven for 24 hours, spare. In July, the weed-inhibiting fungus was applied to the bottom mud surface of the swampy lake. The decomposition of reed residue deposits were measured after one month, two months, and three months of application, respectively, and a control experiment without adding white rot fungicide was set up. The deco...

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Abstract

The invention aims at solving the problem of siltation promotion and accumulation of grass-type lake plant and provides grass restraining and siltation controlling technology and method which utilize microorganism in-situ remediation to speed up decomposition of bottom-mud plant residues. White rot fungicide is used for controlling siltation of lake plant and biological decomposition of lake bottom mud is sped up by lignin degradation. The method is used for controlling biofouling of lake aquatic plants by the means of microorganism, thereby having strong operability and wide application. The method avoids secondary pollution and has important effects on ecological restoration of lake ecosystem.

Description

[0001] The invention belongs to the field of environmental ecology, and in particular relates to a method for controlling the deposition of lake plant residues by using a white-rot fungal agent, which can economically and efficiently slow down the process of lake swamping. Background technique [0002] With the rapid development of the economy, the swamping of lakes in my country has developed rapidly. In the past 50 years, nearly 20 natural lakes have disappeared due to swamping every year on average. Lake swamping has become one of the most important social and environmental problems that seriously threaten the ecological environment of our country. In 2000, the area of ​​East Taihu Lake, which was under national key governance, was significantly reduced from 90% in 1959 to 23.9%, and the comprehensive index of swampiness increased from 1.47 in 1959 to 2.41; 25 sampling points of Nansi Lake in the storage task were surveyed. Except for 4 sampling points without signs of swamp...

Claims

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Application Information

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IPC IPC(8): C02F11/02
Inventor 张宇崔保山蓝艳韩祯王婷婷
Owner BEIJING NORMAL UNIVERSITY
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