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Method for improving protective enzyme activity of turfgrass plants by utilizing air-dried sludge

A technology for air-drying sludge and turfgrass, applied in the fields of botanical equipment and methods, applications, horticulture, etc.

Inactive Publication Date: 2013-08-28
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] It will be of great application value to apply the dewatered sludge of the sewage treatment plant to lawn planting directly after natural air-drying to improve the activity of lawn grass protective enzymes. However, there is no literature report on this technology at home and abroad.

Method used

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  • Method for improving protective enzyme activity of turfgrass plants by utilizing air-dried sludge
  • Method for improving protective enzyme activity of turfgrass plants by utilizing air-dried sludge
  • Method for improving protective enzyme activity of turfgrass plants by utilizing air-dried sludge

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Experimental program
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Effect test

Embodiment 1

[0068] Among them, sludge: soil = 1:3; the sludge for testing is collected from Tianjin Jizhuangzi Sewage Treatment Plant, and the collected sludge is crushed through a 2mm sieve, spread flat on a plastic cloth and placed at the vent for 2 to 3 day, air-dried under natural conditions. The organic matter content of the air-dried sludge is 18.21%, the total nitrogen content is 1.41%, the available phosphorus content is 187 mg / kg, the total potassium content is 652.9 mg / kg, and the water content is 2.13%. The test soil is passed through a 2 mm sieve and placed at the vent 2-3 days, air-dried under natural conditions, soil organic matter content is 4.68%, total nitrogen content is 0.21%, available phosphorus is 22.03 mg / kg, total potassium content is 324.3 mg / kg, pH is 7.44, and saturated moisture content is 0.58 ml / g.

Embodiment 2

[0070] Wherein sludge: soil = 1:7; the sludge for testing is collected from Tianjin Jizhuangzi Sewage Treatment Plant, and the collected sludge is crushed through a 2mm sieve, laid flat on a plastic cloth and placed at the air vent for 2 to 3 day, air-dried under natural conditions. The organic matter content of the air-dried sludge is 18.21%, the total nitrogen content is 1.41%, the available phosphorus content is 187 mg / kg, the total potassium content is 652.9 mg / kg, and the water content is 2.13%. The test soil is passed through a 2 mm sieve and placed at the vent 2-3 days, air-dried under natural conditions, soil organic matter content is 4.68%, total nitrogen content is 0.21%, available phosphorus is 22.03 mg / kg, total potassium content is 324.3 mg / kg, pH is 7.44, and saturated moisture content is 0.58 ml / g.

Embodiment 3

[0072] Wherein sludge:soil=3:13; The described sludge for testing is collected from Tianjin Jizhuangzi Sewage Treatment Plant, and the collected sludge is crushed through a 2mm sieve, laid flat on a plastic cloth and placed at the air vent for 2 to 3 day, air-dried under natural conditions. The organic matter content of the air-dried sludge is 18.21%, the total nitrogen content is 1.41%, the available phosphorus content is 187 mg / kg, the total potassium content is 652.9 mg / kg, and the water content is 2.13%. The test soil is passed through a 2 mm sieve and placed at the vent 2-3 days, air-dried under natural conditions, soil organic matter content is 4.68%, total nitrogen content is 0.21%, available phosphorus is 22.03 mg / kg, total potassium content is 324.3 mg / kg, pH is 7.44, and saturated moisture content is 0.58 ml / g.

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Abstract

The invention discloses a method for improving protective enzyme activity of turfgrass plants by utilizing air-dried sludge. Air-dried sludge combination substrates comprise sludge and soil with, by weight, the part ratio of 1: (3-7). Experiments show that air-dried sludge can facilitate the growth of the turfgrass plants evidently. When festuca arundinacea and lolium perenne are planted in conditions of soil and sludge combination substrates with the part ratios of 1:7, 3:13 and 1:3 respectively, the activities of turfgrass protective enzymes of POD (peroxidase) and CAT (catalase) are improved evidently and show significant differences with control groups. Therefore, the dewatered sludge of a sewage treatment plant can be directly applied to the cultivation of the turfgrass plants after being air-dried naturally to improve the activities of the turfgrass protective enzymes activity.

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 activity of lawn grass plant protection enzymes by using air-dried sludge. Background technique [0002] Most researchers in my country believe that municipal sludge is a solid or fluid substance with a water content of 75% to 99% produced by urban sewage treatment plants after sewage treatment and purification at all levels. Its solid components mainly include organic debris, inorganic particles, bacterial cells, colloids and agents used for flocculation, etc. It is a mixture of organic components and complex components, including organic matter, nitrogen (N ), phosphorus (P), potassium (K) and various trace elements, but also contains a large number of pathogens, parasites (eggs), heavy metals and a variety of toxic and harmful organic pollutants. [0003] Municipal sludge is the sediment produced by urb...

Claims

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Application Information

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