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Method for applying photosynthetic bacteria to improve tolerance of corn to oil and cadmium contaminated soil

A technology for cadmium-contaminated soil and photosynthetic bacteria is applied in the field of applying photosynthetic bacteria to improve the tolerance of corn to oil and cadmium-contaminated soil, which can solve the problems of corn requiring a large amount of fertilizer and being unsuitable for barren soil planting, etc., and achieves the resistance index Improve, improve the effect of physical and chemical properties, process safety

Active Publication Date: 2013-03-27
广东多源地理信息服务有限公司
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AI Technical Summary

Problems solved by technology

Corn needs a lot of fertilizer and is not suitable for planting in poor soil

Method used

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Embodiment

[0019] The method is suitable for improving the resistance and yield of corn in compound polluted soil with oil concentration lower than 3000mg / kg and cadmium concentration lower than 100mg / kg.

[0020] Before corn sowing, spray 500-fold diluted bacterial agent on the soil, take 50-fold diluted bacterial agent and soak the seeds before sowing. After the corn is sown, the bacterial agent is diluted 200 times, and 30-50ml of the bacterial agent is applied to each hole. From the seedling stage, the chlorophyll content of corn was monitored weekly. The method is: select 3-5 typical plants in the group, select the fully expanded leaves at the uppermost node, according to Chen Jianxun (Edited by Chen Jianxun, "Plant Physiology Experiment Guide (Second Edition)", South China University of Technology Press, page 87 ) method for the determination of chlorophyll content. If the chlorophyll content is around 2.0 mg / L, it means that the plant growth is relatively normal at this time, an...

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Abstract

The invention relates to a method for applying photosynthetic bacteria to improve the tolerance of corn to oil and cadmium contaminated soil, belonging to the method for improving the tolerance of soil. The method comprises the following steps: spraying a diluted bacterial agent onto the soil before sowing corn seeds; diluting a bacterial agent, and soaking the corn seeds by the diluted bacterial agent; sowing the corn seeds; spraying the diluted bacterial agent; monitoring the content of chlorophyll in the corn seedling every week from the seedling stage: selecting typical corn seedlings in the cluster, and measuring the content of the chlorophyll in the fully-expanded leaves on the topmost joints of the corn seedlings; or spraying calcium chloride solution to the surfaces of the corn seedling once in the booting stage and the postulating stage respectively, diluting a stock photosynthetic bacterial agent, and spraying the stock photosynthetic bacterial agent once. The method is low in cost and safe in process and is environmentally friendly. Due to the adoption of the method, the content of chlorophyll and carotenoid in the corn seedlings are increased significantly, the corn seedlings are tall and have thick stems, the dry weight and the raw weight of the corn seedlings are improved greatly, the contents of proline, POD and chelating peptide and other resistance indexes of the corn seedlings are improved, the malondialdehyde is reduced, the corn can tolerate oil and cadmium contaminated soil, the physical and chemical properties of the soil are improved significantly, and the fertility of the soil is enhanced.

Description

technical field [0001] The invention relates to a method for improving soil tolerance, in particular to a method for applying photosynthetic bacteria to improve corn tolerance to oil and cadmium polluted soil. Background technique [0002] Petroleum is a complex mixture composed of various substances, mainly including saturated hydrocarbons, aromatic hydrocarbons, n-alkanes, asphaltenes, resins, etc. my country is a big country in oil production and consumption. In 1978, the annual output of crude oil exceeded 100 million tons and became one of the top ten oil producing countries in the world. However, the conditions for oil production and environmental protection technology are relatively backward. According to statistics, 600,000 tons of oil enters the environment through running, escaping, dripping, and leaking in my country every year, causing pollution to soil, groundwater, and surface water. In addition, sewage irrigation is also one of the causes of soil oil polluti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00A01G7/00A01G7/06
Inventor 邵双郭晓雷李海燕关丽杰
Owner 广东多源地理信息服务有限公司
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