A kind of planting method of selenium-enriched strawberry

A planting method and technology of selenium-enriched strawberries, applied in fertilization methods, application, nitrogen fertilizer, etc., can solve the problems of high toxicity, large amount of selenium fertilizer, and inaccurateness, and achieve the effect of facilitating selenium absorption and improving selenium absorption rate

Active Publication Date: 2022-05-24
扬州大学广陵学院 +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are also planting techniques for selenium-enriched strawberries, but most of them use fertilizers containing selenium elements continuously during the whole growth process, such as the technical scheme disclosed in 201510720985.X, which uses sodium selenite as selenium fertilizer, which is highly toxic , rat oral median lethal dose (LD 50 ) is 4.5mg / kg. In addition, this program needs to be sprayed repeatedly, and the amount of selenium fertilizer is large, which is not accurate enough

Method used

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  • A kind of planting method of selenium-enriched strawberry
  • A kind of planting method of selenium-enriched strawberry
  • A kind of planting method of selenium-enriched strawberry

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0024] Strawberries were planted by conventional methods. 72 hours before the milk strawberries were harvested, an aqueous solution of glucose selenoside with a concentration of 1.5 μg / ml of selenium was sprayed, followed by an aqueous solution of ammonium chloride with a concentration of 1.5 μg / ml. The amount of 150μg selenium (converted) and 50μg ammonium chloride was sprayed, and the selenium-enriched strawberry could be obtained after harvesting.

[0025] The strawberries were washed with clean water, and then the selenium content in the harvested strawberries was determined by inductively coupled plasma mass spectrometry (ICP-MS).

[0026] The measured selenium content was 132.1 μg / kg, which was higher than that in the blank control sample without selenium fertilizer (5.2 μg / kg).

[0027] In addition, sugar selenoside and ammonium chloride solution need to be sprayed successively, such as one-time spraying after mixing, which will directly lead to a decrease in fertilizer...

example 2

[0029] Other conditions are the same as Example 1, and the selenium content in strawberries grown with different selenosaccharides is studied. The results are shown in Table 1:

[0030] Table 1 Comparison table of different selenium sugar effects test

[0031]

[0032] The above results show that the effect of using selenoglucose and selenofructose is better. Even selenofructose was slightly better. However, considering that selenofructose is a viscous liquid, it is difficult to transport and pack the product and transfer during use, so selenoglucose is still the best selenium fertilizer. The substance can be made into a dry powder for easy storage and transportation. Selenosaccharides with larger molecular weights, such as selenosucrose and maltose, are less effective.

example 3

[0034] Other conditions were the same as Example 1, and the selenium content in strawberries grown with different selenium fertilizer spraying times was studied. The results are shown in Table 1.

[0035] Table 2. Comparison table of test effect of different selenium fertilizer spraying time

[0036]

[0037] The above results show that the scheme of Example 1 is adopted, that is, the spraying effect is the best 72 hours before harvesting.

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Abstract

A method for planting selenium-enriched strawberries belongs to the technical fields of agriculture and gardening. Spray selenosaccharide aqueous solution and ammonium chloride aqueous solution successively 48~96 hours before strawberry harvest, the present invention adopts ammonium chloride to make selenium-enriched fertilizer reach slightly acidic, and this slightly acidic environment is the most conducive to selenium absorption, compared with no ammonium chloride The selenium-enriched fertilizer can increase the selenium absorption rate by more than three times. The method of the present invention is widely applicable to the planting of various strawberries, such as red strawberry, milk strawberry (Zhang Ji), Fengxiang, Miaoxiang No. 7, white strawberry and the like. By adopting the method of the invention, the strawberries picked 48 to 96 hours after the selenium-rich fertilizer is sprayed are the strawberries rich in selenium.

Description

technical field [0001] The invention belongs to the technical fields of agriculture and horticulture. Background technique [0002] The development of selenium-containing materials using sugar as a carrier has the advantages of cheap, readily available, and biocompatible materials. After long-term research, selenoglucose has been developed, related technologies such as a method for synthesizing nano-selenium materials disclosed in ZL201610899676.8, and selenoglucose has achieved kilogram production ( Ind. Eng. Chem. Res. 2020 , 59, 10763), and is widely used as a selenium-enriched foliar fertilizer (the trial area has reached 1,000 mu this year, mainly for the cultivation of selenium-enriched rice). Compared with other inorganic selenium compounds, selenoglucose is safer, for example, selenoglucose has an oral median lethal dose (LD) in rats. 50 ) is 246mg / kg ( Chin. Chem. Lett. 2020 , 31, 3276), far more than sodium selenate (LD 50 = 1.6 mg / kg) is safe. In addition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G22/05A01C21/00C05F11/00C05C3/00C05G5/23
CPCA01G22/05A01C21/005C05F11/00C05C3/00C05G5/23
Inventor 肖欣蕊管程俞磊李培梓徐杰陶知立狄欣琦刘建
Owner 扬州大学广陵学院
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