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Method using cadmium-rich medium cultivation to fast identify low-cadmium-adsorption leaf vegetable varieties

A technology of substrate cultivation and low absorption is applied in the field of screening crop varieties with low accumulation of heavy metals, which can solve the problems of low absorption varieties and low efficiency.

Pending Publication Date: 2019-12-27
INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at selecting low-cadmium-accumulating leafy vegetables from cadmium-contaminated farmland in northern my country, and aims at the current situation of low efficiency in screening leafy vegetable varieties with low absorption in field tests. The method of vegetables absorbing cadmium, by comparing and verifying with the field results, obtains the optimum cadmium concentration level and the best cultivation time in the matrix, and finally develops a method that can quickly screen low-cadmium-absorbing leafy vegetables

Method used

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  • Method using cadmium-rich medium cultivation to fast identify low-cadmium-adsorption leaf vegetable varieties
  • Method using cadmium-rich medium cultivation to fast identify low-cadmium-adsorption leaf vegetable varieties
  • Method using cadmium-rich medium cultivation to fast identify low-cadmium-adsorption leaf vegetable varieties

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Experimental program
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Effect test

Embodiment 1

[0069] Embodiment 1: the method for rapid identification of leaf vegetable cadmium low absorption varieties

[0070] The steps of this method are as follows:

[0071] A. Sowing

[0072] Add 30 grams of matrix to each hole of the seedling tray, and make it flat so that the hole tray compartment can be clearly seen. The diameter of each hole is 6.5 cm and the depth is 8 cm. The small hole at the bottom of the seedling tray is sealed with black tape. The matrix is ​​composed of coconut peat, vermiculite and perlite according to the weight ratio of 6.0:1.8:1.2. Its cadmium content is 1.5mg / kg and its pH is 7.0. It contains fertilizer plant growth promoters without odor. pathogenic bacteria and insect eggs; then 8 grains of sterilized Jiayuan kale, Shubo No. 1, Lvbao 701 cabbage, and special-selected chrysanthemum chrysanthemum leaf vegetable seeds were sowed in each hole, moistened with deionized water, and then Cover the substrate with a thickness of 1.5 mm and cover it with a ...

Embodiment 2

[0081] Embodiment 2: the method for rapid identification of leaf vegetable cadmium low absorption varieties

[0082] The steps of this method are as follows:

[0083] A. Sowing

[0084] Add 30 grams of matrix to each hole of the seedling tray, and make it flat so that the cell of the tray can be clearly seen. The diameter of each hole is 6.0 cm and the depth is 12 cm. The small hole at the bottom of the seedling tray is sealed with black tape. The matrix is ​​composed of coconut peat, vermiculite and perlite according to the weight ratio of 6.5:1.4:1.6. Its cadmium content is 2.0mg / kg and its pH is 6.5. It contains fertilizer plant growth promoters without odor. Pathogenic bacteria and worm eggs; then spread 10 seeds of sterilized preferred chrysanthemum chrysanthemum, white round-leaf amaranth, green excellent green stems, and arugula leafy vegetables in each hole, add deionized water to moisten, and then cover 1.8mm. Cover the substrate with a plastic film. The seeds germina...

Embodiment 3

[0093] Embodiment 3: the method for rapid identification of leaf vegetable cadmium low absorption varieties

[0094] The steps of this method are as follows:

[0095] A. Sowing

[0096] Add 30 grams of matrix to each hole of the seedling tray, and make it flat so that the cell of the tray can be clearly seen. The diameter of each hole is 7.0 cm and the depth is 10 cm. The small hole at the bottom of the seedling tray is sealed with black tape. The matrix is ​​composed of coconut peat, vermiculite and perlite according to the weight ratio of 7.0:1.6:1.8. Its cadmium content is 0.5mg / kg and its pH is 7.5. It contains fertilizer plant growth promoters without odor. Pathogenic bacteria and insect eggs; then spread 11 seeds of sterilized red wrinkle, emerald baby lettuce, Jiayuan flower leaf amaranth, and fast-growing No. 1 leafy vegetable seeds in each hole, add deionized water to moisten, and then cover the 2.2mm substrate, Cover with plastic film, the seeds germinate 2-3 days ...

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Abstract

The invention relates to a method using cadmium-rich medium cultivation to fast identify low-cadmium-adsorption leaf vegetable varieties. The method includes steps of sowing, seedling stage management, harvesting, cadmium content determination, data statistics and evaluation and the like. Compared with an existing method, the method is economical, time-saving, easy to operate, capable of well reflecting real field conditions, capable of providing a new thought for the fast comparison of the cadmium accumulation ability of vegetables and the like.

Description

【Technical field】 [0001] The invention belongs to a method for screening crop varieties with low accumulation of heavy metals. More specifically, the present invention relates to a method for quickly identifying varieties with low cadmium absorption in leafy vegetables by using cadmium-rich substrate cultivation. 【Background technique】 [0002] Cadmium (Cd) is a common toxic heavy metal element in the soil environment. Its relatively high bioavailability in soil means that it can be easily absorbed and accumulated by crops, seriously threatening the quality and safety of agricultural products. Chronic intake of Cd through various routes, including dietary Cd intake, can lead to serious health hazards. Vegetables are one of the agricultural products that are prone to cadmium exceeding the standard. Vegetable fields in many areas of my country are polluted by soil cadmium, and the absorption capacity of different vegetables to cadmium is quite different. [0003] For large-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G9/029A01G7/06A01C1/00A01C1/02A01C1/08A01G13/00G01N21/73G01N27/62
CPCA01G9/0293A01G9/0295A01G7/06A01G13/00A01C1/00A01C1/02A01C1/08G01N21/73G01N27/62
Inventor 苏世鸣高鑫曾希柏白玲玉
Owner INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI