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Method for rapidly screening low-arsenic-absorption crops with staged water culture method

A hydroponics, low absorption technology, applied in the field of plant cultivation, can solve the problems of high cost, lack of screening methods, long screening time, etc., and achieve the effects of reducing production and emissions, reducing pollution risks, and low cost

Active Publication Date: 2017-08-18
INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the late start of my country's heavy metal-contaminated cultivated land safety production-related technology research, the foundation is relatively weak, and currently there are few low-absorbing crops screened and applied, lacking a unified screening method, and most of them are planted under field conditions. Different crops, Determine whether the corresponding crop is a low-absorption crop by measuring the results of the final absorption, plant body content, etc., and calculating the corresponding absorption, transfer, and enrichment coefficients
This method has obvious limitations, such as high cost, long time, and difficult control of test conditions, especially the result deviation caused by the uneven distribution of arsenic in the field, which seriously affects the judgment of screening crops
Therefore, crops with low arsenic absorption are rarely used in agricultural production, which seriously limits the safe production of agricultural products in cultivated land with excessive arsenic and moderate or light pollution.
[0006] In the screening of crops with low absorption of heavy metals, the most critical issue is the establishment of a screening and identification method system for crops with low absorption of heavy metals. Invention patents, but the screening time is still long, and the formation of arsenic-containing waste liquid is more, the cost is higher, and the workload is also larger. Therefore, it is urgent to establish a faster and more accurate method based on the existing basis. In particular, the method of screening and identifying crops with low arsenic absorption, which produces less waste liquid containing arsenic and has less impact on the environment, promotes the popularization and application of crops with low absorption of heavy metals and produces due benefits

Method used

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  • Method for rapidly screening low-arsenic-absorption crops with staged water culture method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Embodiment 1: The present invention adopts segmented hydroponics method to quickly screen arsenic low-absorption celery

[0077] The implementation steps of this embodiment are as follows:

[0078] A. Sowing

[0079] Let the celery seed (American white celery kind) purchased from the relevant research institute of the Chinese Academy of Agricultural Sciences be in the concentration of 10% H by weight. 2 o 2 Soak and sterilize in the solution for 15 minutes, separate, rinse the sterilized celery seeds with deionized water, and then put them on a general-purpose vermiculite-peat culture substrate with a particle size of less than 2mm, moisten the culture substrate and celery seeds with deionized water, and then place them on Cover a layer of culture substrate with a thickness of 2mm, then cover with a plastic film to keep the culture substrate and celery seeds moist, then keep at a temperature of 24°C for 2 days, the celery seeds germinate, lift the plastic film, and ke...

Embodiment 2

[0095] Embodiment 2: The present invention adopts subsection hydroponic method to quickly screen arsenic low-absorption wheat

[0096] The implementation steps of this embodiment are as follows:

[0097] A. Sowing

[0098] Let the wheat seeds (Xu Mai 31 varieties) purchased from the relevant research institutes of the Chinese Academy of Agricultural Sciences be 30% H by weight at a concentration of 2 o 2 Soak and sterilize in aqueous solution for 12 minutes, separate, rinse the sterilized wheat seeds with deionized water, and then put them on a general-purpose vermiculite-peat culture substrate with a particle size of less than 2mm, moisten the culture substrate and wheat seeds with deionized water, and then place them on top of them Cover with a layer of culture substrate with a thickness of 5mm, then cover with a plastic film to keep the culture substrate and wheat seeds moist, then keep at a temperature of 25°C for 3 days, the wheat seeds germinate, remove the plastic fil...

Embodiment 3

[0112] Example 3: The present invention adopts segmented hydroponic method to quickly screen arsenic low-absorption rapeseed

[0113] The implementation steps of this embodiment are as follows:

[0114] A. Sowing

[0115] Let the rapeseed (Qinyou No. 7 variety) purchased from the relevant research institute of the Chinese Academy of Agricultural Sciences be 32% H by weight at a concentration of 2 o 2 Soak and sterilize in aqueous solution for 10 minutes, separate, rinse the sterilized rapeseed with deionized water, and then put it on a general-purpose vermiculite-peat culture substrate with a particle size of less than 2mm, moisten the culture substrate and rapeseed with deionized water, and then place it on them Cover with a layer of culture substrate with a thickness of 3mm, and then cover it with a plastic film to keep the culture substrate and rapeseed moist, then keep it at a temperature of 26°C for 2 days, the rapeseed germinates, remove the plastic film, and keep suff...

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Abstract

The invention relates to a method for rapidly screening low-arsenic-absorption crops with a staged water culture method. The method includes the steps of sowing, nutrient solution preparation, transplanting, culture, subculture, aftertreatment and the like. The method can be used for screening low-arsenic-absorption crops and has universality, and low-arsenic-absorption crops which are screened out have great application and promotion value in high-risk areas with the soil arsenic content possibly exceeding the standard and areas with medium-mild arsenic pollution and have significant social, economic and ecological benefits.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of plant cultivation. More specifically, the present invention relates to a method for rapidly screening crops with low arsenic absorption by adopting segmented hydroponics. [0003] 【Background technique】 [0004] Screening and utilization of crops with low absorption of heavy metals is one of the most important and low-cost measures to ensure the safe production of agricultural products in heavy metal-polluted farmland. At present, the heavy metal pollution of cultivated land in my country is not optimistic. The heavy metal content of cultivated land in high-risk areas exceeds the standard seriously, and the heavy metal content of some cultivated land in the main production areas exceeds the standard. According to the National Soil Pollution Survey Bulletin issued by the Ministry of Environmental Protection and the Ministry of Land and Resources 》, the total over-standard rate of soil in the countr...

Claims

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Application Information

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IPC IPC(8): A01G31/00
Inventor 曾希柏张骞苏世鸣王亚男白玲玉
Owner INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI