Production method for selenium-rich sweet potatoes

Abstract

The invention discloses a production method for selenium-rich sweet potatoes. The method comprises the steps that selenium fertilizer is applied for 3 times during the production of sweet potatoes in the south of Liaoning Province, the total supply amount per mu is about 30 jin, and 10 jin of fertilizer is applied for each time; the spraying time for each time is before 11 a.m and after 15 p.m, and the high-temperature time quantum at noon is avoided; the selenium fertilizer is carefully and uniformly sprayed; respraying is required after spraying for 6 hours in case of rain.

Description

technical field [0001] The invention relates to a method for producing sweet potatoes, in particular to the production of sweet potatoes rich in trace elements. Background technique [0002] Selenium is an important trace element in the human body, which can resist aging and maintain vitality; the important physiological functions of selenium to the human body have attracted more and more attention from scientists from various countries, and all countries have formulated recommended intakes of selenium nutrition according to their own conditions; the United States recommends adult The daily intake (RDI) of selenium for men and women is 70 micrograms / day and 55 micrograms / day respectively, while in the UK it is 75 micrograms / day and 60 micrograms / day; 200 μg / day; [0003] At present, the commonly used selenium supplement methods for the human body mainly include taking sodium selenite, eating selenium salt, etc., but because these methods are difficult to control the intake ...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used selenium supplement methods for the human body mainly include taking sodium selenite, eating selenium salt, etc., but because these methods are difficult to control the intake and have potential toxicity and other reasons, they have obvious limitations; people from the perspective of long-term and safety We are discussing the production of selenium-enriched agricultural products, so that people can supplement selenium through diet, and selenium can enter the human body through the food chain; a large number of experiments have proved that this is an effective way to supplement selenium; sweet potato is an important crop in my country. Measures to increase the content of selenium in sweet potatoes and produce selenium-rich sweet potatoes have important practical significance for improving the nutritional level of human selenium and improving people's health; at the same time, it can improve the quality of sweet potatoes, increase the added value of sweet potatoes, and increase the income of fruit farmers