Early warning method of cadmium pollution risk in rice grains based on gradient thin film diffusion technology

A gradient film diffusion, rice grain technology, applied in forecasting, instrumentation, data processing applications, etc., to achieve the effect of high forecasting accuracy and convenient operation

Active Publication Date: 2021-10-15
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are no relevant reports on the use of gradient film diffusion technology to study soil-rice cadmium pollution risk warning methods

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Early warning method of cadmium pollution risk in rice grains based on gradient thin film diffusion technology
  • Early warning method of cadmium pollution risk in rice grains based on gradient thin film diffusion technology
  • Early warning method of cadmium pollution risk in rice grains based on gradient thin film diffusion technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A risk early warning method for cadmium pollution in rice grains, based on the gradient film diffusion technique (DGT) to characterize the bioavailability of cadmium in soil, and to explore the relationship between the accumulation of cadmium in rice grains, the content of available cadmium in soil, and the physical and chemical properties of soil relationship established.

[0031] (1) Sampling: For two consecutive years in 2017 and 2018, rice ears and corresponding surface soil (0-20cm ) samples, a total of 143 samples were collected for rice ear and soil samples. The sampling points are all representative fields in the local area, and the rice varieties are the main local varieties. The sampling time is the rice maturity stage, and each point is randomly sampled. See the table below for the rice varieties collected in each region and the number of samples.

[0032] Name of rice variety and number of samples at each sampling point

[0033]

[0034] (2) Pretreatme...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to the field of agricultural product quality and safety, and discloses a method for early warning of cadmium pollution risk in rice grains based on gradient film diffusion technology, including: S1: before rice planting, collect soil samples, and use gradient film diffusion technology to detect the effective state in the soil Cadmium content X1, simultaneously detect soil pH value X2, silicon oxide content X3, iron oxide content X4 and calcium oxide content X5; S2: Substitute X1-X5 into the prediction model to obtain the predicted value Y of cadmium content in rice grains at the mature stage; S3: According to the early warning value J=Y÷0.2mg / kg and related judgment rules; predict the risk. The method of the invention has the characteristics of high prediction accuracy, convenient operation and the like. When monitoring the safety of rice, the safety of cadmium in rice grains can be warned before planting, and problems can be detected early.

Description

technical field [0001] The invention relates to the technical field of agricultural product quality safety, in particular to a method for early warning of cadmium pollution risk in rice grains based on gradient film diffusion technology. Background technique [0002] Since the 20th century, with the substantial increase in population, the rapid development of mining, smelting and manufacturing industries, the use of a large number of agricultural chemicals and the discharge of urban sewage, the pollution of cadmium (Cd) in soil has become increasingly serious. According to statistics, the world's cultivated land polluted by heavy metals is about 235 million hm 2 , and about 22,000 tons of Cd enters the soil every year. [0003] Many studies have shown that the absorption and accumulation of cadmium by crops mainly depends on its bioavailability (absorbable content by plants) in the soil rather than the total amount. How to scientifically characterize the bioavailability of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24
CPCG01N33/24G01N2033/245G06Q10/04G06Q10/0635G06Q50/02
Inventor 肖文丹叶雪珠张棋陈德赵首萍方小满
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap