Production method of selenium-enriched rice

Abstract

The invention relates to a production method of selenium-enriched rice. The production method comprises the following steps of (1) preparing a selenium-contained preparation and a retention agent, and mixing the selenium-contained preparation with alkaline substances, so as to obtain an improved selenium-contained preparation mixture; (2) uniformly spraying the selenium-contained preparation mixture to a rice field in a jointing-booting stage of rice, and keeping water for more than seven days; (3) managing the rice according to normal water and fertilizer management practices, and finally, harvesting the selenium-enriched rice. The production method has the beneficial effects that the selenium-contained preparation is mixed with the alkaline substances, so that the absorption and utilization rate of the rice to selenium can be greatly increased, and the selenium-enriched rice is cultivated with relatively low selenium applying cost.

Description

technical field [0001] The invention relates to the technical field of agricultural planting, in particular to a production method of selenium-enriched rice. Background technique [0002] Rice is the main food crop in my country, and the population whose staple food is rice accounts for about 50% of the total population. Rice has high nutritional value, generally containing 75%~79% carbohydrates, 6.5%~9% protein, 0.2%~2% fat, 0.2%~1% crude fiber, and 0.4%~1.5% 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 ...

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

However, the disadvantages of the above method are that the dosage of nano-selenium plant nutrients is large, the final absorption and utilization rate of rice is low, and there is a waste of resources and a high cost of selenium enrichment.