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Method for improving drought resistance of lawn plants through dried sludge

A technology of air-drying sludge and drought resistance, which is applied in the fields of botanical equipment and methods, horticultural methods, sewage/sludge fertilizers, etc., can solve the problems of reducing the cost of sludge reuse and shortening the time of sludge reuse.

Inactive Publication Date: 2013-09-11
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The dewatered sludge from the sewage treatment plant is directly applied to the cultivation of lawn plants after natural air-drying treatment, which not only shortens the time for sludge reuse, but also saves a lot of human resources and reduces the cost of sludge reuse; and this One technical method, there is no literature report at home and abroad at present

Method used

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  • Method for improving drought resistance of lawn plants through dried sludge
  • Method for improving drought resistance of lawn plants through dried sludge
  • Method for improving drought resistance of lawn plants through dried sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] (1) Tall fescue seeds with full and uniform grains were selected as test materials; the collected soil was placed on plastic cloth, flattened and crushed, passed through a 2 mm sieve, placed at the vent for 2 days, and air-dried under natural conditions. The organic matter content is 4.68%, the total nitrogen content is 0.21%, the available phosphorus content is 22.03 mg / kg, the total potassium content is 324.3 mg / kg, the pH value is 7.44, and the saturated moisture content is 0.58 ml / g; the sludge for testing is collected from Tianjin Jizhuangzi Sewage Treatment Plant. The collected sludge was crushed through a 2mm sieve, spread flat on plastic cloth and placed at the vent for 2 days, and air-dried under natural conditions. The organic matter content of the sludge was 18.21%, the total nitrogen content was 1.41%, and the available phosphorus content was 187 mg / kg. The total potassium content is 652.9 mg / kg, and the water content is 2.13%;

[0079] (2) Select a petri di...

Embodiment 2

[0084] (1) Select tall fescue seeds with full and uniform grains as the test material; collect the soil and place it on plastic cloth, flatten and crush it, pass through a 2mm sieve, and place it at the vent for 3 days, air-dry under natural conditions, and the soil organic matter content 4.68%, total nitrogen content 0.21%, available phosphorus 22.03 mg / kg, total potassium content 324.3 mg / kg, pH 7.44, saturated water content 0.58 ml / g; the sludge for test was collected from Tianjin Jizhuangzi Sewage Treatment Plant, collected The final sludge was crushed through a 2mm sieve, spread flat on plastic cloth and placed at the vent for 2 days, and air-dried under natural conditions. The organic matter content of the sludge was 18.21%, the total nitrogen content was 1.41%, the available phosphorus content was 187mg / kg, and the total potassium The content is 652.9mg / kg, and the water content is 2.13%;

[0085] (2) Select a petri dish with a diameter of 9.5cm and a height of 1.5cm as...

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Abstract

The invention discloses a method for improving drought resistance of lawn plants through dried sludge. The method includes selecting culture dishes as culture containers for the lawn plants, filling the culture dishes with substrate mixed by sludge and soil and which is 80g in weight, and soaking seeds in water for 24 h to allow the seeds to absorbing water and swell completely before sowing. The proportion of the dried sludge and the soil to be mixed is 1 to 7(w / w). The proportion of utmost water content of the substrate is 47.5%. The seed sowing amount of each dish is 10g / m2. According to experimental results, accumulation of biomass on festuca arundinacea land and chlorophyll content increasing under drought conditions can be promoted effectively by adding the dried sludge, SOD (superoxide dismutase) and POD (peroxidase) activities are increased; according to each measuring indicators, damages on plants by adversity can be relieved effectively through adding the dried sludge when stressed by drought.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and relates to urban greening, in particular to a method for improving the drought resistance of lawn plants by using air-dried sludge. Background technique [0002] my country's sludge production is increasing day by day, how to properly dispose of sludge from sewage treatment plants has become a concern of people from all walks of life. At present, the main purpose of my country's urban sludge treatment and disposal is to achieve sludge reduction, stabilization, harmlessness and resource utilization. There are many ways to dispose of sludge. Commonly used methods in my country include: sanitary landfill, incineration, water absorption, composting and land utilization. Sanitary landfill is a relatively mature sludge treatment method. This method has low investment, large capacity and quick results. On a certain basis, it can also increase the construction land in some cities. H...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01G7/00C05F7/00
CPCY02A40/20
Inventor 多立安赵树兰张倩
Owner TIANJIN NORMAL UNIVERSITY
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