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Method for renovating azotate contaminated soil by using cotton rod high yield pulp waste liquor biotransformation bacterial N4

A high-yield pulp and biotransformation technology, applied in the field of agricultural biology, can solve the problems of vegetable quality decline and nitrate accumulation, and achieve the effect of great scientific value and application potential

Inactive Publication Date: 2008-09-24
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

Vegetables are a kind of crops that are easy to accumulate nitrates. Farmers use excessive nitrogen fertilizers in order to obtain high yields, resulting in the accumulation of nitrates and the decline of vegetable quality.

Method used

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  • Method for renovating azotate contaminated soil by using cotton rod high yield pulp waste liquor biotransformation bacterial N4
  • Method for renovating azotate contaminated soil by using cotton rod high yield pulp waste liquor biotransformation bacterial N4
  • Method for renovating azotate contaminated soil by using cotton rod high yield pulp waste liquor biotransformation bacterial N4

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0024] A method for remediating nitrate-contaminated soil by using cotton stalk high-yield pulp waste liquid biotransformation strain N4, including an in-situ remediation method and an ex-situ remediation method.

[0025] Among them, the method of using in-situ remediation method is: in the nitrate-contaminated farmland soil, river sediment, orchard soil according to the dosage of 3.0×10 10 N4 bacteria were added per kg, and added once every 30 days to maintain the content of N4 bacteria.

[0026] The method of adopting the ex-situ remediation method is: excavate the nitrate-contaminated soil, according to the amount of bacteria to be 3.0×10 10 N4 bacteria were added per kg, and added once every 30 ...

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Abstract

The invention relates to a method for restoring soil contaminated by nitrate through using a cotton stalk high-yield pulp waste liquid biotransformation bacteria N4 and adopts a situ restoration method and a heterotopic restoration method. The method is characterized in that the farmland soil, river bottom mud and orchard soil are added with the bacteria N4 according to the amount of 3.0*10<10>N4 bacteria / kg; the bacteria N4 is also added after 30 days in order to maintain the content of the bacteria N4. The bacteria N4 cultured by waste liquid can significantly reduce nitrate nitrogen, and have great importance for controlling nitrate pollution to vegetable fields. The utilization of the biotransformer of the bacteria N4 is a good approach for development of circulatory economy. The method has great prospects for social and economic benefits.

Description

technical field [0001] The invention belongs to the field of agricultural biotechnology, and in particular relates to a method for repairing nitrate-contaminated soil by adopting cotton stalk high-yield pulp waste liquid biotransformation strain N4. Background technique [0002] According to reports, 81.2% of the nitrate ingested by the human body comes from vegetables. Therefore, the research on the technology of reducing the accumulation of nitrate in vegetables has become a hot spot that people pay more and more attention to. Vegetables are a kind of crops that are easy to accumulate nitrates. Farmers use excessive nitrogen fertilizers in order to obtain high yields, resulting in the accumulation of nitrates and the decline of vegetable quality. Generally, when the nitrate content in the soil is high, the nitrate content in the vegetables is also high, and vice versa, but there is no one-to-one correspondence between the two. Therefore, controlling the accumulation of nit...

Claims

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Application Information

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IPC IPC(8): B09C1/10C12S13/00C12S99/00
Inventor 杨宗政庞金钊
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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