Rice cadmium stopping agent

Abstract

The invention relates to a rice cadmium stopping agent. The rice cadmium stopping agent is prepared from a cadmium stopping ingredient, adhesive, emulsifying agent, preservative, anti-freezing agent and solvent in a dissolved-and-mixed mode; the cadmium stopping ingredient is zinc salt, and the using quantity is 19% to 23%; the adhesive is hydroxypropyl chitin, and the using quantity is 7% to 10%; the emulsifying agent is one or two of emulsifying agent BS-10 and emulsifying agent BS-12, and the using quantity is 4% to 6%; the preservative is potassium sorbate, and the using quantity is 0.05% to 0.08%; the anti-freezing agent is ethylene glycol, and the using quantity is 0.5% to 2%; the solvent is distilled water. The rice cadmium stopping agent is suitable for being mixed with the seed or being sprayed on the leaf surface of rice planted in medium cadmium pollution soil, and the rice cadmium content is reduced. Before rice is seeded, the rice cadmium stopping agent is used for being mixed with the seeds, and the rice cadmium content is reduced by 37.2% to 45.1%; in the full heading stage and the grouting medium term in the rice growing process, leaf surface spraying is carried out through the rice cadmium stopping agent respectively, and the rice cadmium content is reduced by 48.6% to 67.8%. The rice cadmium stopping agent is easy and convenient to produce, low in cost and convenient to use, the rice cadmium content can be effectively reduced, and economic benefits, social benefits and ecological benefits are obvious.

Description

technical field [0001] The invention relates to a rice cadmium inhibitor used for seed dressing or foliar spraying of rice planted in cadmium-contaminated soil to reduce the cadmium content of rice; it belongs to the fields of heavy metal pollution control technology in paddy fields and crop cultivation technology. Specifically, it is a rice cadmium inhibitor, which is prepared by dissolving and mixing cadmium inhibitor components, adhesives, emulsifiers, antifreeze and solvents, and is suitable for seed dressing or Foliar spraying can reduce cadmium content in rice. Background technique [0002] Cadmium is a toxic metal element. After entering the human body, it can gradually accumulate in the liver, kidney, bone, lung and other systems, causing damage to these systems. Symptoms of chronic cadmium poisoning are fatigue, loss of sense of smell, decrease in hemoglobin, etc. Severe poisoning can lead to "bone pain disease" and even death due to other complications. In 1984, ...

AI Technical Summary

Problems solved by technology

Although the phytoremediation method is economical and environmentally friendly, its treatment cycle is long and the rice fields will temporarily lose production capacity. It is not suitable for the national conditions of our country with many people and little land, and cannot be promoted on a large scale

The chemical passivation method to control the accumulation of cadmium in rice by adjusting the soil pH or Eh and other ways to control the accumulation of cadmium in rice by applying lime to the soil and other methods, although the effect is quick and the effect is obvious, the dosage is too large, the cost is high, and May have a negative impact on the environmental quality of paddy soil and has become a bottleneck restricting its development