Method for improving festuca arundinacea growth in sewage irrigation area soil by using composite chemical agent

A chemical preparation and technology of tall fescue, applied in chemical instruments and methods, botany equipment and methods, soil conditioning materials, etc., can solve problems such as soil and agricultural product pollution, groundwater pollution, and rising incidence of chronic diseases

Inactive Publication Date: 2014-06-18
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] On the one hand, sewage irrigation causes soil and agricultural product pollution, causing pollutants to accumulate in crops or crops, and then enter people through the food chain, which in turn leads to an increase in the incidence of various chronic diseases; on the other hand, lon

Method used

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  • Method for improving festuca arundinacea growth in sewage irrigation area soil by using composite chemical agent
  • Method for improving festuca arundinacea growth in sewage irrigation area soil by using composite chemical agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] The method of compound restoration agent to improve the growth of tall fescue in the soil of sewage irrigation area:

[0062] (1) Handling of materials:

[0063] The perennial tall fescue ( Festuca arundinacea L . ) is the experimental material.

[0064] The chelating agent is selected nitrilotriacetic acid; the surfactant is selected sodium dodecylsulfonate;

[0065] The soil for the test was taken from the sewage irrigation area, and the collected soil was removed from grass roots and stones, spread flat on a transparent plastic cloth, placed in a ventilated place, and dried naturally for 2-3 days, then passed through a 2 mm sieve for use; the soil organic matter content was 3.62% , total nitrogen content 0.19%, total phosphorus content 5.4 g·kg -1 , total potassium 787.3 mg·kg -1 , pH7.28, soil water content 4.13%, conductivity 0.44 ms cm -1 . The contents of Cd, Cu and Zn in the soil were 7.13, 146.31 and 795.56 mg·kg, respectively -1 , are respectively 23.8...

Embodiment 2

[0071] The method of compound restoration agent to improve the growth of tall fescue in the soil of sewage irrigation area:

[0072] (1) Handling of materials:

[0073] The perennial tall fescue ( Festuca arundinacea L . ) is the experimental material.

[0074] The chelating agent is selected nitrilotriacetic acid; the surfactant is selected sodium dodecylsulfonate;

[0075] The soil for the test was taken from the sewage irrigation area. The collected soil was removed from grass roots and stones, spread flat on a transparent plastic cloth, placed in a ventilated place, and dried naturally for 2-3 days, then passed through a 2 mm sieve for use; the soil organic matter content was 3.62% , total nitrogen content 0.19%, total phosphorus content 5.4 g·kg -1 , total potassium 787.3 mg·kg -1 , pH7.28, soil water content 4.13%, electrical conductivity 0.44 ms cm -1 . The contents of Cd, Cu and Zn in the soil were 7.13, 146.31 and 795.56 mg·kg, respectively -1 , are respective...

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Abstract

The invention discloses a composite chemical agent, which is prepared from a chelating agent nitrilotriacetic acid and a surfactant sodium dodecyl sulfate, wherein the molar ratio of the chelating agent nitrilotriacetic acid to the surfactant sodium dodecyl sulfate is 5-15 mmol.kg<-1> nitrilotriacetic acid (NTA) to 1 mmol.kg<-1> sodium dodecyl sulfate. On the basis of an optimal experiment, the growth of festuca arundinacea in sewage irrigation area soil is regulated and controlled by combination of the NTA and the surfactant. An experiment proves that the method for improving festuca arundinacea growth in the sewage irrigation area soil by using the composite chemical agent can be applied to reduction of the toxicity of the festuca arundinacea caused by heavy metal. The method has positive meaning on production of carpet grass in the sewage irrigation area soil.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to a method for improving the growth of tall fescue in soil in sewage irrigation areas with compound chemical preparations. Background technique [0002] my country's total water resources rank among the top in the world, but the per capita share is very small. It is one of the 13 water-poor countries. In addition, my country's water resources are still facing various pollution problems. The lack of water resources has become an important factor restricting my country's economic development. one. Reasonable use of sewage irrigation can not only alleviate the problem of water shortage, but also save water resources and reduce environmental pollution. Sewage irrigation refers to the harmless treatment of urban domestic sewage and industrial wastewater, which is directly or indirectly used for farmland sewage irrigation, garden sewage irrigation and underground reservoir...

Claims

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Application Information

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IPC IPC(8): C09K17/14A01G1/00
Inventor 多立安赵树兰常晨
Owner TIANJIN NORMAL UNIVERSITY
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