Planting method of selenium-enriched Chinese yam

Abstract

The invention discloses a planting method of selenium-enriched Chinese yam. The method comprises the steps that water is added to protein selenium or nano-selenium to be diluted into a 50-2000 ppm organic selenium aqueous solution, and the solution is sprayed on leaf surfaces in the formation period of Chinese yam rhizomes, wherein the spraying amount is 10-100 liters each mu, and spraying is carried out three times at the time interval of 15-20 days; finally, selenium-enriched Chinese yam is harvested according to conventional time and a conventional method. The selenium content of the obtained selenium-enriched Chinese yam is 0.25-1.8 mg / kg. The Chinese yam which is sprayed with organic selenium directly absorbs organic selenium on the leaf surfaces and in the soil, and biological conversion is carried out in the Chinese yam, so that the selenium content of the Chinese yam is rich, the standard of selenium-rich food is met, the operation is convenient, safe, efficient and stable, andthe economic and social benefits are remarkable.

Description

technical field [0001] The invention belongs to the technical field of planting, and in particular relates to a planting method of high-efficiency selenium-enriched yam. Background technique [0002] Yam is a kind of food with the same origin of medicine and food. Its nutritional value is very high. It is rich in protein, vitamins, fat, sugar, choline and amylase. It also contains iodine, iron, phosphorus, calcium and other indispensable ingredients for the human body. The inorganic salts and trace elements have the functions of invigorating the spleen and nourishing the lungs, nourishing the stomach and nourishing the kidney, strengthening the kidney and nourishing the essence, maintaining the long-term mind, and beautifying the skin. Selenium is a multifunctional life nutrient, which is directly related to the health of the human body. Selenium deficiency may lead to cancer, hepatitis, diabetes, cardiovascular and cerebrovascular diseases, arthritis and other diseases, a...

AI Technical Summary

Problems solved by technology

[0003] The current method of producing selenium-enriched yam is basically to make selenium fertilizer with inorganic substances such as sodium selenate, sodium selenite, and calcium selenate. Fertilizer, or sprayed with selenium-enriched nutrient solution during the cultivation process, the steps are cumbersome and the operation is complicated, and the above-mentioned sodium selenate, sodium selenite, calcium selenate and other selenium-containing inorganic substances are highly toxic, improper use or cannot be used Yam is fully and effectively absorbed and transformed, and its residues are likely to cause harm to the human body