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Method for reducing accumulation of heavy metal in fagopyrum.tataricum grains

A heavy metal, tartary buckwheat technology, applied in the biological field, can solve problems such as pollution

Inactive Publication Date: 2019-10-18
GUIZHOU INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, heavy metals discharged with wastewater, even if the concentration is small, can accumulate in algae and sediment, be absorbed by the surface of fish and shellfish, produce food chain concentration, and cause public nuisance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The test site is located in the experimental field of the Guizhou Provincial Institute of Biotechnology. The tartary buckwheat species tested is the main local variety. It was sown on July 15, 2017 and harvested on October 9, 2017.

[0025] The heavy metal-polluted yellow loam with medium fertility is selected, with 18.2g / kg of soil organic matter, 1.02g / kg of total nitrogen, 108.0mg / kg of alkaline nitrogen, 8.2mg / kg of available phosphorus, 105.0mg / kg of available potassium, and a pH value of 6.75.

[0026] The main heavy metal content of the above test soil is shown as:

[0027] Cd (mg / kg) Pb (mg / kg) Hg (mg / kg) Cr (mg / kg) As (mg / kg) 32.51 38.92 35.78 34.56 3.82

[0028] The method for reducing the accumulation of heavy metals in tartary buckwheat grains by biological methods is characterized in that it comprises the following steps in sequence:

[0029] (1) Seed soaking and seed dressing: Soak the seeds with 0.3% trehalose solution for 20...

Embodiment 2

[0037] Others are the same as embodiment 1, reduce the method that heavy metal accumulates in tartary buckwheat grain by biological method, it is characterized in that comprising the following steps successively:

[0038] (1) Seed soaking and seed dressing: Soak the seeds with 0.3% trehalose solution for 20-30 minutes before sowing;

[0039] (2) Sowing:

[0040] As a preference, choose yellow loam with medium fertility, soil organic matter 18.2g / kg, total nitrogen 1.02g / kg, alkaline nitrogen 108.0mg / kg, available phosphorus 8.2mg / kg, available potassium 105.0mg / kg, pH 6.75.

[0041] The area of ​​the plot is 2m*5m, the row spacing is 30cm, and 38.0g of tartary buckwheat is sown in each plot;

[0042] (3) Potassium lactate solution sprayed in the early stage of flowering:

[0043] Seedlings can emerge in 8 to 10 days. When the seedlings grow to a height of 1 foot, the period from the early flowering period is the critical period for the growth of tartary buckwheat. Potassium ...

Embodiment 3

[0046] The method for reducing the accumulation of heavy metals in tartary buckwheat grains by biological methods is characterized in that it comprises the following steps in sequence:

[0047] (1) Seed soaking and seed dressing: Soak the seeds with 0.3% trehalose solution for 30 minutes before sowing;

[0048] (2) Sowing:

[0049] As a preference, choose yellow loam with medium fertility, soil organic matter 18.2g / kg, total nitrogen 1.02g / kg, alkaline nitrogen 108.0mg / kg, available phosphorus 8.2mg / kg, available potassium 105.0mg / kg, pH 6.75.

[0050] The area of ​​the plot is 2m*5m, the row spacing is 30cm, and 38.0g of tartary buckwheat is sown in each plot;

[0051] (3) Potassium lactate solution sprayed in the early stage of flowering:

[0052]Seedlings can emerge in 8 to 10 days. When the seedlings grow to 1 foot high, the period from the early flowering period is the critical period for the growth of tartary buckwheat. Potassium lactate is prepared into an aqueous sol...

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Abstract

The invention discloses a method for reducing the accumulation of heavy metal in fagopyrum.tataricum grains through a biological method. The method comprises the steps of (1) seed soaking and mixing,wherein seed soaking is conducted for 20-30 minutes with a 0.3% trehalose solution before sowing; (2) sowing; (3) spraying of a potassium lactate solution in an early flowering period, wherein seedlings emerge within 8-10 days, the period from the time when the seedlings grow to about 1 chi high to the early flowering period is a key period for the growth of fagopyrum.tataricum, potassium lactateis prepared into the aqueous solution with the concentration of 150-200 mg / L, on the 3rd-15th day after seedling emergence, the potassium lactate solution is sprayed onto the leaf surfaces by a sprayer, and 1.5 L of the aqueous solution is uniformly sprayed to each 2m*5m area; conventional water management and field management are adopted in step (2). Ridges are constructed among all the plots andcovered with plastic film to prevent mutual penetration of fertilizer and water, and when 70% of fagopyrum.tataricum grains in each plot are mature, harvesting is conducted.

Description

technical field [0001] The invention relates to a method for reducing the accumulation of heavy metals in tartary buckwheat grains, belonging to the field of biology. Background technique [0002] Tartary buckwheat (Fagopyrum. tataricum) belongs to the plant of the genus Fagopyrum Mill in the family Polygonaceae, and is one of the main cultivated species. Years of research have shown that tartary buckwheat grains contain seven nutritional and health-care components, namely starch, vitamins, cellulose, fat, protein, minerals, and bioflavonoids (the main component is rutin). Blood pressure, blood fat lowering, anti-cancer, anti-cancer, cardiovascular protection and other functions, and also help prevent common diseases such as high blood pressure, diabetes, colon cancer, coronary heart disease, so it is known as the "king of five grains" and has been developed Into a variety of health products available. [0003] At present, due to the mining, smelting, and processing of hea...

Claims

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Application Information

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IPC IPC(8): A01C1/00A01G22/20A01G7/06
CPCA01C1/00A01G7/06A01G22/20
Inventor 刘辉
Owner GUIZHOU INST OF TECH
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