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Can be suppressed accumulation and absorption of paddy rice heavy metals, and high-selenium-containing rice selenium-doped nano-silica sol that can be produced, and the method of preparation
Can be suppressed accumulation and absorption of paddy rice heavy metals, and high-selenium-containing rice selenium-doped nano-silica sol that can be produced, and the method of preparation
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机译：可以抑制水稻中重金属的积累和吸收，以及可以生产的高硒大米硒掺杂的纳米二氧化硅溶胶及其制备方法
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摘要
the present invention, it is possible to suppress the accumulation and absorption of heavy metals in rice, and selenium-doped nano-silica sol that can produce high-selenium-containing rice, and disclosed a process for the preparation thereof. Selenium doped nano sol in the present invention mainly to the Nanoshirikazoru the carrier, sodium selenite, etc. as raw materials, and the like vitamin C and a reducing agent, polyvinyl pyrrolidone and the like as an emulsifier, silica sol is doped selenium in specific proportions is dispersed in, it has a special structure and function, selenium doped nanosilica sol is formed. Selenium doped nanosilica sol obtained was prepared according to the present invention has high stability, the concentration is high, a uniform and transparent, and the content of the silica can be achieved more than 20%, and the content of selenium 1% it is possible to achieve more, and the content of impurities is small. The pH of the selenium-doped nano sol of the present invention is close to neutral, selenium, is distributed between the silica colloidal particles as nanoparticles, the particle size of the colloidal particles is 50 nm or less, the surface of the leaves after spraying, it is possible to considerably promote the growth of crops, arsenic or crops, to suppress the accumulation and absorption of cadmium, it can increase the selenium content of the crop, and, adverse side effects in crops no, it can be safely carried.FIELD 2
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