Selenium-rich rice planting method

Abstract

The invention provides a selenium-rich rice planting method. The selenium-rich rice planting method is characterized in that when a rice field is prepared, a selenium fertilizer containing selenium-rich coal gangue powder and a base fertilizer are applied together, and the selenium fertilizer is prepared by uniformly mixing the selenium-rich coal gangue powder, limestone powder and ferrous sulfate according to a ratio of 100: (100-300): (30-50). According to the method, the selenium-rich coal gangue powder, the limestone powder and the ferrous sulfate act together, so that a selenium source is provided, the storage of the coal gangue powder after selenium is dissolved out is also ensured, and the selenium is released to play a role when a large amount of selenium is needed by rice, so that the loss of the selenium when a large amount of irrigation water and rainwater are needed is avoided, and the utilization rate of the selenium is increased; the selenium content of the produced rice processed into brown rice and rice meets the selenium content requirement of selenium-rich products; and meanwhile, the selenium enrichment process also reduces the absorption of heavy metals in soil, fertilizers and irrigation water by rice plants, so that the heavy metal content of the obtained brown rice and rice is reduced.

Description

technical field [0001] The invention belongs to the technical field of grain processing, and in particular relates to a method for planting selenium-enriched rice. Background technique [0002] Rice is an important food crop in my country, and rice is one of people's basic staple foods; selenium-enriched rice with health benefits has recently attracted attention. It is generally considered that rice containing 0.04-0.30 mg / kg selenium is selenium-enriched rice. [0003] Selenium is an indispensable trace element to maintain the normal functions of the human body. Selenium deficiency in the human body can lead to various diseases. According to research, selenium has the effects of improving the body's antioxidant capacity, enhancing the body's immune function, effectively removing garbage in the body, promoting human health, and delaying aging. The daily selenium intake recommended by the Chinese Nutrition Society is 50-250 micrograms, depending on individual physical condi...

AI Technical Summary

Problems solved by technology

[0005] In areas with low selenium content in the soil, selenium-enriched nutrient solution can be sprayed on rice leaves from earing to filling stage, and selenium-enriched rice can be produced through plant absorption and biotransformation. Problems with high and unreliable effects, such as rainy or strong winds, will affect the effect of foliar spraying and the absorption effect of rice plants, and there are many limiting factors

[0006] When finishing the paddy field, grind the selenium-containing ore powder that meets the quality requirements of fertilizers, such as the selenium-enriched coal gangue produced in Enshi, Hubei, and mix it with the base fertilizer, which can make the rice produced selenium-enriched, but the problem is that the selenium-enriched coal gangue The selenium in the powder is easy to dissolve, and it is easy to lose when there is a lot of irrigation water or rainwater, thereby reducing the utilization rate of selenium, because the time for rice plants to absorb a large amount of selenium is after the rice seedlings grow to a larger size

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