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Stem and leaf surface controlling selenium-rich fertilizer for increasing yield of crops, and method for applying controlling selenium-rich fertilizer

An application method and technology of selenium-enriched fertilizer, applied in the direction of fertilization method, phosphate fertilizer, application, etc., to achieve the effect of improving the safety of agricultural products and increasing crop yield

Inactive Publication Date: 2020-02-18
刘俐
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no technology to use selenium-containing anaerobic salt to directly fix the corresponding heavy metals on a non-edible part of the crop, and at the same time increase the nutritional value of the edible part

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1) Selenium-enriched resistance control fertilizer composition: composed of Se fertilizer and phosphate fertilizer: sodium selenide, potassium dihydrogen phosphate and water;

[0020] 2) Spraying method: Dilute into a spraying solution, in which the concentration of sodium selenide is 1mg / L, and the concentration of potassium dihydrogen phosphate is 1g / L. Spray at the early stage of sweet potato germination, once a day, and spray continuously for 3 days.

[0021] 3) Application results: Compared with the control group sprayed only with phosphorus fertilizer, sweet potatoes germinated and grew rapidly, the available mercury content in the soil was reduced by 50%, and the mercury content in sweet potatoes was lower than 0.01mg / kg. All are lower than the national standard food pollutant limit.

Embodiment 2

[0023] 1) Selenium-enriched resistance control fertilizer composition: composed of Se fertilizer and phosphate fertilizer: sodium selenide, sodium sulfoselenide, potassium dihydrogen phosphate and water;

[0024] 2) Spraying method: Dilute into a spraying liquid, in which the concentration of sodium selenide is 0.5mg / L, sodium sulfoselenide is 0.5mg / L, and the concentration of potassium dihydrogen phosphate is 1g / L. Spray at the early stage of potato germination. Once a day, continuous spraying for 3 days.

[0025] 3) Application results: Compared with the control group sprayed only with phosphorus fertilizer, the potatoes germinated and grew rapidly, the available mercury content in the soil was reduced by 51%, and the mercury content in potatoes was lower than 0.01mg / kg. All are lower than the national standard food pollutant limit.

Embodiment 3

[0027] 1) Selenium-enriched resistance and control fertilizer composition: only Se fertilizer is contained, and the composition is sodium selenide and water;

[0028] 2) Spraying method: plant wheat in cadmium-contaminated farmland, clean the leaf surface with water at the beginning of earing stage, and then spray the selenium-enriched resistance and control fertilizer spray liquid on the leaf surface once a day, spray 3 times continuously, and spray sodium selenide in the liquid The concentration is 1mg / L;

[0029] 3) Application results: the selenium content in wheat seeds reached 0.03 mg / kg, and the cadmium content was 30%-49% lower than that of the non-sprayed control fertilizer, which was significantly lower than the cadmium content in the seeds treated by soil passivation, and both were low. At 0.02 mg / kg, meeting the national food safety standards.

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Abstract

The invention discloses a stem and leaf surface controlling selenium-rich fertilizer for increasing yield of crops, and a method for applying the controlling selenium-rich fertilizer. The controllingselenium-rich fertilizer comprises an Se fertilizer, and the Se fertilizer is an aqueous solution of one or more selected from a selenide, a selenide hydrate, a sulfoselenide and a sulfoselenide hydrate, wherein the selenide is one or two selected from potassium selenide and sodium selenide, and the sulfoselenide is one or two selected from potassium sulfoselenide and sodium sulfoselenide. Duringapplication, the selenium-enriched controlling fertilizer is diluted into a spraying liquid, and the total concentration of selenium and sulfur in the spraying liquid is in a range from 0.1mg / L to 10mg / L. The selenium-enriched controlling fertilizer prevents toxic and harmful heavy metals from entering edible parts, converts selenium into organic selenium compounds through physiological metabolismin organisms, and enriches the organic selenium compounds in edible parts, and selenium-enriched nutrient crops are obtained.

Description

technical field [0001] The invention relates to the technical field of agriculture, in particular to the technical field of heavy metal resistance and control fertilizers, in particular to a heavy metal resistance and control selenium-enriched fertilizer and an application method thereof. Background technique [0002] Selenium is one of the essential trace elements for the human body and organisms. It can regulate the absorption and consumption of vitamins A, C, E, and K, cooperate with vitamin E to protect cell membranes, and participate in the catalytic reactions of various enzymes in the body. An important component of glutathione peroxidase (glutathione peroxidase, GSH-Px) and iodothyroid deiodinase (iodothyroninedeiodinase, ID). At the same time, selenium is also an antagonist of some toxic substances. It has the function of detoxifying heavy metals such as mercury, lead, and cadmium. It can eliminate various harmful free radicals in the body, reduce or delay the produc...

Claims

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Application Information

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IPC IPC(8): C05G1/00A01C21/00
CPCA01C21/005C05B7/00C05D9/02
Inventor 刘俐
Owner 刘俐
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