Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for screening cadmium rejection varieties of leaf-edible rapes

A screening method, a cadmium rejection technology, is applied in the field of screening of cadmium rejection varieties of leafy rapeseed, which can solve the problems that the content of heavy metals in edible parts cannot meet the requirements of food hygiene standards and the difference in heavy metal accumulation ability, and achieves a simple and safe method. The effect of quality safety and strong operability

Active Publication Date: 2013-08-14
AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many studies have found that when the heavy metal content in the soil exceeds the moderate pollution level, the heavy metal content in the edible parts of all test varieties cannot meet the requirements of food hygiene standards; show a large difference

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
  • Method for screening cadmium rejection varieties of leaf-edible rapes
  • Method for screening cadmium rejection varieties of leaf-edible rapes
  • Method for screening cadmium rejection varieties of leaf-edible rapes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: Screening experiment of cadmium-rejecting varieties of leafy rapeseed carried out in Tianjin

[0027]The potted experiment site is located in the experimental network room of the Environmental Protection Institute of the Ministry of Agriculture, and there are no pollution sources around the site. The soil for testing was collected from an unpolluted vegetable field in Dongli District, Tianjin. The soil type was fluvo-aquic soil, and its basic physical and chemical properties were: pH 8.01, cation exchange capacity CEC 17.8 cmol / kg, organic matter content 3.55 %, and total Cd content 0.34 mg / kg. kg, and the total Pb content was 27.96 mg / kg. According to the "Soil Environmental Quality Standard", the tested soil was clean soil. The tested rapeseed varieties were provided by Tianjin Academy of Agricultural Sciences, a total of 35 varieties, which are widely planted in Tianjin and its surrounding areas.

[0028] According to the requirements of "Soil Environ...

Embodiment 2

[0039] Example 2: Screening experiment of cadmium-rejecting varieties of leafy rapeseed carried out in Hunan

[0040] The pot experiment site is located in the experimental field of Xiangyin County Agricultural Science Institute, Yueyang City, Hunan Province, and there is no pollution source around the field. The test soil was collected from a nearby unpolluted vegetable field. The basic physical and chemical properties are: pH 6.35, cation exchange capacity CEC 11.2 cmol / kg, organic matter content 4.55%, total Cd content 0.15 mg / kg, total Pb content 35.72 mg / kg, According to the "Soil Environmental Quality Standards", the soil for testing is clean soil. Rapeseed varieties to be tested were purchased from agricultural materials markets in Changsha and Yueyang. There are a total of 32 varieties, all of which are widely planted in the two places and their surrounding areas.

[0041] According to the requirements of "Soil Environmental Quality Standards", when the soil pH is low...

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 a method for screening cadmium rejection varieties of leaf-edible rapes. The method comprises the steps of 1) performing outdoor open-air cultivation in a potting mode; 2) selecting a plurality of varieties of leaf-edible rapes; 3) selecting uncontaminated soil to add a cadmium salt solution to enable the soil cadmium content to be 0.3mg / kg, 0.6mg / kg, 0.9mg / kg, 1.2mg / kg and 1.5mg / kg when the pH is lower than 7.5 and the soil cadmium content to be 0.6mg / kg, 0.9mg / kg, 1.2mg / kg, 1.5mg / kg and 2.0mg / kg when the pH is higher than 7.5; 4) sowing the rapes and managing growth; 5) harvesting stem leaf portions and analyzing the fresh weight, the dry weight and the cadmium content; and 6) analyzing the stem leaf yield and the cadmium content of different varieties successively from 0.3mg / kg processing to maximum concentration processing, and selecting the cadmium rejection rape varieties under the pollution level, wherein the stem leaf cadmium (Cd) content of the cadmium rejection rape varieties is lower than a food hygienic standard of 0.2mg / kg and the stem leaf yield ratio is not reduced obviously under the pollution processing. According to the method, safe and high-yield cadmium rejection varieties of leaf-edible rapes can be screened, the application range can be obtained, and the method can be effectively used in safety agriculture production.

Description

technical field [0001] The invention relates to the safe production technology of crops under polluted environment, in particular to a screening method for cadmium-repelling varieties of leaf-used rapeseed. Background technique [0002] In recent years, the situation of heavy metal pollution in agricultural soil in my country has become increasingly severe. According to statistics in the 1990s, the area of ​​cultivated land polluted by heavy metals in my country reached 20 million hm 2 , of which cadmium (Cd) polluted farmland amounted to 13,300 hm 2 In 2001, the monitoring results of 320 key polluted farmlands in 24 provinces and cities nationwide by the Ministry of Agriculture showed that heavy metals are the main pollutants in soil and agricultural products, accounting for more than 80% of the total area and total output of agricultural products with pollutants exceeding the standard, while Cd The area of ​​polluted agricultural products exceeding the standard reached 2...

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 Applications(China)
IPC IPC(8): A01G1/00
Inventor 王林徐应明梁学峰孙约兵林大松孙扬秦旭
Owner AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com