Selenium-enriched rice and production method thereof

Abstract

The invention discloses a selenium-enriched rice which is produced by processing selenium-enriched paddy rice, the selenium-enriched paddy rice is obtained by applying a nutritional agent for the selenium-enriched paddy rice in the soil of a paddy field for cultivation after land preparation and before irrigation, and the weight composition of the nutritional agent for the selenium-enriched paddyrice is as follows: nano-selenium plant nutritional agent: nitrogen-phosphorus-potassium compound fertilizer is equal to 0.1-1: 1, wherein the weight concentration of selenium in the nutritional agent for the selenium-enriched paddy rice is 2000-10000mg / kg. The selenium content of the selenium-enriched rice is 0.04-0.300mg / kg, the proportion of organic selenium is more than 80%, and the form is safer. The production method of the selenium-enriched rice is simpler, the using amount of the nutritional agent for the selenium-enriched paddy rice is small, and the environmental pollution is small.

Description

technical field [0001] The invention relates to a selenium-enriched rice and a production method thereof. Background technique [0002] Rice is the main food crop in my country, and the population that takes rice as a staple food accounts for about 50% of the total population. The nutritional value of rice is high, generally containing 75% to 79% of carbohydrates, 6.5% to 9% of protein, 0.2% to 2% of fat, 0.2% to 1% of crude fiber, and 0.4% to 1.5% of ash. Compared with other grains, rice contains the least crude fiber, the starch grains are very small, easy to digest, and the digestibility and absorption rate of various nutrients are high, which is suitable for human needs. [0003] my country's rice planting area is as high as 29.96 million hectares, distributed in a vast area, from Sanya City in tropical Hainan Province in the south; Mohe City in Heilongjiang Province in the north; m of the Southwest Plateau. Due to historical reasons such as food pressure, my country's...

AI Technical Summary

Problems solved by technology

[0005] At present, there are mainly two kinds of selenium-enriched rice production in China. One is to spray sodium selenite solution on the leaves during the filling period. Spraying can not be applied at the same time with other fertilizers, which increases the complexity of rice cultivation. When the solution is sprayed, it is easy to spill the soil and increase the cost. The residual amount of inorganic selenium is large, because inorganic selenium must be combined with organic ligands in the intestinal tract before it can be absorbed In order to be absorbed and utilized by the body, there are many elements in the intestinal tract that compete with selenium for limited ligands, thus greatly affecting the absorption of inorganic selenium

In addition, inorganic selenium has obvious toxic effects on organisms, and its safety is low.

The second is to plant directly in natural selenium-rich areas. This method is difficult to quantify and control the selenium content, and has regional limitations, which is not conducive to large-scale standardized production