A kind of production method of rice rich in organic state selenium, zinc and iron nutrition

Abstract

The invention discloses a production method of nutrient rice rich in organic selenium, zinc and iron. The method includes drying a field; during field drying, fertilizer rich in organic selenium, zinc and iron is applied to soil in which rice is planted; the fertilizer rich in organic selenium, zinc and iron is made with mixture of compound fertilizer special for rice and inorganic fertilizer rich in organic selenium, zinc and iron; the inorganic fertilizer rich in organic selenium, zinc and iron contains selenite, zinc salt and ferrite. The production method has the advantages that the rice rich in organic selenium, zinc and iron meeting related standards (content limits for elements such as selenium, zinc and iron in NY861-2004 foods (including cereals, beans and tubers), NY861-2004 foods (including cereals, beans and tubers) and GB / T14609-2008 foods and products) can be produced by applying the fertilizer with low content of selenium, iron and zinc.

Description

technical field [0001] The invention belongs to the technical field of agricultural fertilization and agronomy, and in particular relates to a production method of rice rich in organic selenium, zinc and iron nutrition. Background technique [0002] Selenium, zinc, and iron are essential trace elements for the human body. They are essential nutrients in the daily dietary nutrition balance standard of the Chinese Nutrition Society. If the intake is low, it will cause functional or organic changes and various diseases. For example, selenium deficiency in the human body can cause Keshan disease, Kaschin-Beck disease, gastrointestinal diseases, etc.; zinc deficiency can cause diseases such as anorexia and picky eating, decreased immune function, and mental retardation; iron deficiency can cause anemia, reduced body resistance to infection, and diseases such as pregnancy. [0003] Selenium deficiency, zinc deficiency and iron deficiency in soil are very common in the world. Soi...

AI Technical Summary

Problems solved by technology

The above-mentioned patent CN102498994A describes that the selenium-rich iron-zinc inorganic fertilizer is applied in stages, and the soluble selenium, zinc, and iron in the fertilizer are basically dissolved in the water layer of the paddy field, and the rice root system is not easy to absorb; if the selenium-rich iron-zinc inorganic fertilizer is used in a small amount, the rice The content of selenium, iron and zinc is low, and the purpose of enriching selenium, iron and zinc in rice cannot be achieved; if selenium, iron and zinc are to be enriched in rice, a large amount of selenium, iron and zinc inorganic fertilizers must be used, as described in this patent. The total amount of organic and inorganic fertilizers reaches 60-120Kg / mu. The amount of organic and inorganic selenium, iron and zinc fertilizers will cause great pollution to the runoff water in the field, and the residual amount of inorganic selenium, zinc and iron will also be large