Selenium-enriched breeding substrate and method for producing selenium-enriched agricultural products by selenium-enriched breeding substrate

Abstract

The invention provides a selenium-enriched breeding substrate and a method for producing selenium-enriched agricultural products by the selenium-enriched breeding substrate. The proportion of selenium to sulfur of the breeding substrate is 1:2-10, the substrate utilizes the selenium and sulfur competition absorption relationship, in the early period of the seedling growth, the selenium absorption is inhabited through the sulfur, the inhabitation effect is relieved after the seedling biomass is increased, the better selenium accumulation effect is reached while the selenium poison in the breeding early period is avoided, and finally, the improvement of the selenium content in seedlings and finished products is realized. The substrate is utilized for producing the selenium-enriched agricultural products, the selenium enriching is transferred to the breeding period from the ordinary transplanting, the fertilizer application operation in the later period is avoided, the labor is greatly saved, simplicity and convenience are realized, finally, the selenium content of the selenium-enriched agricultural products can be greatly improved, and in addition, stability and standardization are realized.

Description

technical field [0001] The invention relates to a selenium-enriched seedling-raising substrate and a method for producing selenium-enriched agricultural products using the substrate, which belongs to the field of cultivation. Background technique [0002] Selenium is an essential trace element for humans and animals. It has biological properties such as scavenging free radicals, anti-oxidation, anti-aging, anti-cancer, enhancing immunity, and antagonizing heavy metals. The Chinese Nutrition Society recommends a daily selenium intake of 50-250 μg. The source of selenium in the human body is mainly from dietary intake, but the average daily selenium intake of adults in my country is only about 36 μg. Therefore, selenium malnutrition is common in our country. The data released by WHO also shows that more than 40 countries in the world belong to low selenium or selenium deficient areas. Selenium-enriched agricultural by-products are an effective way for the human body to suppl...

AI Technical Summary

Problems solved by technology

This method utilizes that selenium is a beneficial element of plants, and achieves a better effect of seedling cultivation, but it cannot be determined whether selenium is present in the final product of subsequent vegetables.

[0006] Chinese invention patents "Vegetable Seedlings, Cultivation Methods and Selenium-Enriched Vegetables Produced" (Application No. 201010580224.6) and "Selenium-Enriched Rice Seedlings, Their Cultivation Methods and Organic Selenium-rich Rice" (Application No. 201010580228.4) disclose a Add selenium-containing substances in the substrate to achieve the final production of selenium-rich products through the cultivation of selenium-enriched seedlings. However, in order to avoid the poisoning of selenium to seedlings in this method, the degree of selenium fortification is limited, that is, the amount of selenium in the seedling cultivation substrate and The content of selenium in the final product cannot be improved to a large extent