Method for cultivating organic selenium-enriched rice

Abstract

The invention discloses a method for cultivating organic selenium-enriched rice. The method is characterized by comprising the following steps of: respectively preparing selenium-enriched seedling cultivating matrixes and selenium-enriched organic and inorganic special fertilizers by taking selenium-containing flax cakes as a selenium source, utilizing the selenium-enriched seedling cultivating matrixes in the seedling cultivation of rice, and respectively applying the selenium-enriched organic and inorganic special fertilizers as a base fertilizer and additional fertilizer before transplanting seedlings of the rice and before the farmland rest at the last phase of tillering of the rice. According to the method for cultivating the organic selenium-enriched rice, disclosed by the invention, conventional methods in which selenium-containing solution or selenium-containing leaf surface fertilizer is sprayed at a flowering phase and a seed phase of rice in the current selenium-enriched rice production or the selenium-containing solution is added in a rice processing procedure are changed, unsafe factors in the production of the selenium-enriched rice are avoided, and the production ofthe selenium-enriched rice is economical, efficient and pollution-free.

Description

technical field [0001] The invention relates to rice cultivation, in particular to a method for cultivating organic selenium-enriched rice. Background technique [0002] Selenium is an essential trace element for humans and animals. It is an antioxidant that can relieve aging and eliminate a variety of harmful free radicals. Its synergistic effect with vitamin E is called the "golden partner" of anti-oxidation. Selenium deficiency will lead to the decline of human immunity, and the occurrence of Keshan disease and Kaschin-Beck disease. Severe selenium deficiency will cause various diseases such as coronary heart disease, hemolytic anemia and liver cancer. Currently, the number of selenium-deficient people worldwide is estimated to be between 50 and 100 million. [0003] The census results of my country (13 provinces) show that the per capita daily selenium intake is only 36 micrograms, which is lower than the 50 micrograms recommended by the World Health Organization, less ...

AI Technical Summary

Problems solved by technology

Second, the Chinese dietary structure results in limited selenium intake

But its shortcoming is also obvious, at first foliage spraying requires relatively high selenium fertilizer content, as the content of the salt of selenic acid or selenous acid in CN ZL01144575.0 " selenium-enriched plant nutrition regulator " is 4~25%

High-concentration selenium fertilizer increases the cost of fertilizer use; secondly, because of foliar spraying, selenium fertilizer is easy to spill into the field, which will cause certain pollution to field runoff water and soil and is a great waste; thirdly, often Lead to a large amount of inorganic selenium residues, and inorganic selenium has obvious toxic effects on the body, and the safety is low

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