Method for biologically restoring organic phosphorus pesticide polluted soil

A technology of organophosphorus pesticides and polluted soil, which is applied in the field of bioremediation of polluted soil, can solve the problems of accelerating the mineralization of organic matter, and has not yet seen the patent or product of polluted soil, and achieves the effect of promoting degradation, simple and practical method, and accelerating restoration

Inactive Publication Date: 2011-01-19
HENAN UNIV OF SCI & TECH
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Problems solved by technology

[0004] As far as arbuscular mycorrhizal fungi are concerned, it has been reported that their hyphae can secrete phosphatase, which can use organophosphate sources t

Method used

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  • Method for biologically restoring organic phosphorus pesticide polluted soil
  • Method for biologically restoring organic phosphorus pesticide polluted soil

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Embodiment 1

[0024] (1) Preparation of arbuscular mycorrhizal fungal agent. Pass the river sand through a 1mm sieve, sterilize with high-pressure steam at 121°C for 2 hours, mix 7.8g of urea and 33g of superphosphate per 100kg of river sand to make a matrix, and inoculate the matrix with 5% inoculum containing Scotchball Arbuscular mycorrhizal fungi initial microbial inoculants of Glomus caledonium 90036, Acaulospora mellea ZZ, Glomus mosseae BEG167, Glomus intraradices BEG 141 , and then add about 20% water to the matrix, sow the seeds of sudan grass, manage them routinely, and harvest the arbuscular mycorrhizal fungal agent after 3-4 months. Cut off the upper part of the Sudan grass, cut the root into pieces, mix it with the substrate, and air dry it for later use.

[0025](2) Test treatment. Crush 1200g of air-dried farmland soil, pass through a 1cm sieve, put it into a 1L ceramic pot, and manually apply phoxim and dichlorvos to the contaminated soil. Three pesticide concentration le...

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Abstract

The invention discloses a method for biologically restoring organic phosphorus pesticide polluted soil. An arbuscular mycorrhizal fungi and plant symbiotic system is used for accelerating the recovery of the organic phosphorus pesticide polluted soil. The method comprises the following steps of: (1) preparing an arbuscular mycorrhizal fungi agent; (2) inoculating the fungi agent to the soil to be restored, and planting quick growth plants, or transplanting the plants after mycorrhizal seedling culture; and (3) managing the plants to grow 2 to 3 months. The arbuscular mycorrhizal fungi agent comprises Glomus caledonium 90036, Acaulospora mellea ZZ, Glomus mosseae BEG167 and Glomus intraradices BEG 141). The host plant is selected from quick growth plants such as Sudan grass, alfalfa, corn, broomcorn and the like. The method can reduce the pesticide residue in agricultural products, reduce environment transfer to water, atmosphere and the like and reduce harm to human health, and is simple, convenient and environment-friendly.

Description

technical field [0001] The invention relates to a method for bioremediation of polluted soil, in particular to a method for bioremediation of soil polluted by organophosphorus pesticides. Background technique [0002] Arbuscular mycorrhizal fungi are the most widely distributed symbionts in terrestrial ecosystems and are also widespread in various contaminated soils. As we all know, arbuscular mycorrhizal fungi can improve the yield and quality of plants by improving the nutritional status of plants, especially phosphorus nutrition, and can also improve drought resistance, salt resistance, disease resistance, and heavy metal resistance. A large number of reports have shown that arbuscular mycorrhizal fungi can also improve the tolerance of plants to organic pollutants, promote their degradation in soil, and can be used to improve the remediation efficiency of some contaminated soils. For example, Chinese patent application No. 03133832.1 has invented a method of using mycor...

Claims

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Application Information

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IPC IPC(8): B09C1/10B09C1/00
Inventor 王发园石兆勇徐晓锋苗艳芳常会庆
Owner HENAN UNIV OF SCI & TECH
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