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A compound conditioner for passivating cadmium pollution in farmland and promoting rice production

A technology of cadmium pollution and conditioning agent, applied in the restoration of polluted soil, plant growth regulator, plant growth regulator, etc.

Active Publication Date: 2020-07-07
广西多得乐生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the current widely existing situation that rice fields are polluted by heavy metal cadmium, the present invention provides a composite conditioner for passivating farmland cadmium pollution and promoting rice production

Method used

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  • A compound conditioner for passivating cadmium pollution in farmland and promoting rice production
  • A compound conditioner for passivating cadmium pollution in farmland and promoting rice production
  • A compound conditioner for passivating cadmium pollution in farmland and promoting rice production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Example 1 : Screening and identification of cadmium-absorbing strains

[0066] 1. Acquisition of strains

[0067] 1. Collection of strains: In September 2015, a 100g sample was taken from the organic fertilizer raw material pile (mushroom slag) of Duodele Fertilizer Factory in Shuangding Town, Nanning City, Guangxi, China, and a 100g sample was taken from the fertile soil sample of the fertilizer factory.

[0068] 2. Isolation and screening of strains absorbing cadmium

[0069] (1) Prepare separation medium with deionized water, containing 10g of peptone, 5g of yeast extract, 10g of NCl, and 15g of agar per liter; pH 7.0; sterilize with damp heat at 121°C for 20 minutes; pour the plate when cooled to 55-60°C.

[0070] (2) Take 10g of sample and put it into a 250mL Erlenmeyer flask, add 90mL of sterile water and an appropriate amount of glass beads, and stir for 30min on a magnetic stirrer. It is the sample that is thoroughly mixed with water to disperse the cells. ...

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Abstract

The invention belongs to the technical field of microbial application and particularly relates to a compound conditioner for passivating cadmium pollution of a farmland and promoting yield increase ofrice. The compound conditioner for passivating cadmium pollution of the farmland and promoting yield increase of the rice is prepared from 20%-40% by mass of Bacillus pumilus and 60%-80% by mass of arbuscular mycorrhizal fungi. The compound conditioner can obviously reduce enrichment of cadmium in rice seeds; normal growth of root systems of the rice can be guaranteed under low cadmium concentration, the toxic action of cadmium on the root systems of the rice is reduced, and the compound conditioner plays a good role in relieving adversity stress in the rice growth process and protecting healthy growth of the rice.

Description

technical field [0001] The invention belongs to the technical field of microbial application, and in particular relates to a composite conditioner for passivating farmland cadmium pollution and promoting rice production. Background technique [0002] Traditional methods of soil heavy metal pollution control generally include chemical and physical methods. These methods are usually expensive to deal with, and it is easy to cause damage to the soil structure and affect the microbial flora, forming "secondary pollution". It is even more impossible to control large-scale pollution. Among the soil heavy metal pollution remediation technologies that have been carried out so far, the method of extracting heavy metals from the soil with plants is one of the main methods. The heavy metals in the soil are extracted and migrated to the plants. After the plants are harvested in an appropriate period, the excessive heavy metals in the soil can be removed, thereby realizing the purifica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/20C12N1/14A01N63/22A01N63/30A01P21/00B09C1/10C12R1/07C12R1/645
Inventor 蓝健益姜明国杨齐江朝明陆富海黄斌良吴华德黄燕菲
Owner 广西多得乐生物科技有限公司