Leaf surface obstructing agent capable of inhibiting wheat grains from cadmium absorption and accumulation and using method thereof

A technology of wheat grain and barrier agent, applied in the field of environmental pollution control, to achieve the effect of simple operation and lower cadmium content

Active Publication Date: 2018-11-06
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Purpose of the invention: Aiming at the deficiencies and defects of the prior art, the present invention provides a foliar barrier agent that inhibits the absorption and translocation of cadmium by wheat grains and its application me

Method used

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  • Leaf surface obstructing agent capable of inhibiting wheat grains from cadmium absorption and accumulation and using method thereof
  • Leaf surface obstructing agent capable of inhibiting wheat grains from cadmium absorption and accumulation and using method thereof
  • Leaf surface obstructing agent capable of inhibiting wheat grains from cadmium absorption and accumulation and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] In this example, "Aikang 58" wheat seeds were used for pot planting experiments: the wheat soil culture potting experiment selected the heavy metal-contaminated soil in Qixia Mountain, Nanjing. After the soil was naturally dried, impurities such as straw and stones were picked out, and the naturally air-dried soil was fully ground. Mix well and pot ready for sowing. The basic physical and chemical properties of Qixia Mountain polluted farmland soil are:

[0045]

[0046] The pots have a diameter of 10cm and a height of 30cm. They are placed in a tray with a diameter of 12cm. The bottom of the pot is covered with three layers of 60-mesh gauze and two layers of filter paper. There are 24 pots in total; each pot is sown with 30 complete and uniform wheat grains to ensure that the soil Sufficient water; choose robust wheat seedlings with consistent growth in each pot, and keep 7 seedlings; set up 8 treatments in pot experiments, which are: control group (ionized water), ...

Embodiment 2

[0049] In this example, "Aikang 58" wheat seeds were used for a field experiment: the experimental field was a heavy metal-polluted farmland with an area of ​​5m*60m located in Xinxiang City, Henan Province. The basic physical and chemical properties of the soil in the field test site are:

[0050]

[0051] Divide the test field into 5 plots of 5m*11m, each with an area of ​​55m 2 , the interval between each cell is 1m. A total of 8 treatments were set up in the field experiment, namely: control group (ionized water), humic acid 5g / L, potassium dihydrogen phosphate 10mmol / L, glutathione 0.2mmol / L, oxalic acid 8mmol / L, salicylic acid 1mmol / L, calcium chloride 10mmol / L, mannose 160μmol / L, each treatment was repeated 5 times. According to the random block design, each treatment point was marked with a label, and the spraying treatment was carried out at the heading stage, flowering stage and filling stage of wheat respectively, and spraying was carried out for 3 days in eac...

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Abstract

The invention discloses a leaf surface obstructing agent capable of inhibiting wheat grains from cadmium absorption and transferring. The main effective component of the leaf surface obstructing agentis mannose, and the concentration of the mannose is 40 micromoles per litre-320 micromoles per litre. The invention further discloses a using method of the leaf surface obstructing agent. The using method of the leaf surface obstructing agent comprises the steps that the spraying period of the leaf surface obstructing agent is the growing and developing period of wheat, the mist spraying mode isadopted to make the leaf surface spraying agent sprayed to wheat leaves contaminated by cadmium, and the leaf surface obstructing agent is sprayed at regular intervals. According to the leaf surface obstructing agent, the cadmium content contained in the wheat grains can be effectively reduced by 32.93%-33.52%, the operations are simple, secondary contamination on soil cannot be caused, and good solving ways are provided for the cadmium contamination problem of the wheat grains.

Description

technical field [0001] The invention relates to the technical field of environmental pollution control, in particular to a foliar barrier agent for inhibiting wheat grains from absorbing and accumulating cadmium and an application method thereof. Background technique [0002] Cadmium (Cadmium, Cd) is a non-essential element in the process of biological growth and development. It is also one of the most harmful heavy metals in nature. It is an accumulative poison with poor mobility and strong toxicity in soil. Its pollution can be transmitted, enriched and amplified through the food chain, thereby indirectly endangering human health. In recent years, the serious problem of heavy metal Cd pollution in soil poses a threat to crop production and food security. Agricultural inputs, sewage irrigation and atmospheric deposition are the main sources of Cd pollution in farmland. [0003] With the frequent occurrence of "arsenic poisoning", "blood lead", "cadmium rice" and other inc...

Claims

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Application Information

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IPC IPC(8): A01G22/22A01G7/06A01G7/00A01N43/16A01P21/00
CPCA01G7/00A01G7/06A01N43/16A01G22/22
Inventor 陆巍张蓓郑翔黄维
Owner NANJING AGRICULTURAL UNIVERSITY
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