Rice cadmium reducing agent, seed soaking solution, preparation method and seed soaking method

Abstract

The invention belongs to the technical field of rice production, and particularly relates to a rice cadmium-reducing agent, a seed soaking solution, a preparation method and a seed soaking method. The cadmium-reducing agent comprises metal salt, and the metal salt is at least one of ferrous sulfate, ferric chloride, ferrous chloride, manganese chloride, manganese nitrate, manganese sulfate, zinc chloride, zinc nitrate and zinc sulfate. When the agent is used for soaking rice seeds, the cadmium absorption capacity of rice can be reduced, and the germination potential of the rice seeds is improved. The metal salt serves as a competitive adsorption particle of heavy metal cadmium and can enter rice seeds in advance during seed soaking, the concentration of competitive metal ions in cells of the rice seeds is increased, and the absorption of cadmium in soil by rice is reduced by competing with cadmium ions for a transport channel in rice root system membrane transport protein. Meanwhile, the metal salt can stimulate the expression of stress-resistant genes in the rice seeds, accelerate the germination of the rice seeds, improve the germination potential and shorten the germination accelerating time of rice.

Description

technical field [0001] The invention belongs to the technical field of rice production, and in particular relates to a rice cadmium-reducing agent, a seed soaking liquid, a preparation method and a seed soaking method. Background technique [0002] In recent years, with the development of industry and the extensive use of agricultural inputs, the world is facing more and more serious soil environmental safety issues, and heavy metal pollution has received the most attention. According to the "National Soil Pollution Survey Bulletin" jointly issued by the Ministry of Environmental Protection and the Ministry of Land and Resources in 2014, the total excess rate of soil in the country is 19.4%, among which, the excessive points of inorganic pollutants mainly composed of heavy metals account for 82.8% of the total. %. Constrained by the tight level of arable land in our country, simple and rude measures to abandon wasteland for soil polluted by heavy metals will obviously bring...

AI Technical Summary

Problems solved by technology

[0006]Therefore, the technical problem to be solved in the present invention is to overcome the toxicity of the rice seed soaking liquid in the prior art, which cannot be popularized and used, and the cadmium-reducing effect of the soaking liquid has yet to be solved. Further improve the defects such as, thereby providing a rice cadmium-reducing agent, a rice cadmium-reducing soaking liquid and a preparation method thereof, and a soaking method

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