Cadmium reducing agent for rice

Abstract

The invention relates to a rice cadmium reduction agent. The rice cadmium reduction agent is prepared via dissolving and mixing of 6 to 14% of a cadmium control ingredient, 0.5 to 3% of an adhesive, 1 to 3% of an emulsifier, 0.1 to 0.4% of an antiseptic, and a solvent; the cadmium control ingredient is sodium sulfide; the adhesive is one selected from or a mixture of sodium carboxymethylcellulose and hydroxyethyl cellulose sodium; the emulsifier is emulsifier OP-13 or emulsifier OP-15; the antiseptic is sodium benzoate; and the solvent is deionized water. The rice cadmium reduction agent is suitable for foliar application of rice planted in soil polluted by cadmium, and is capable of reducing rice cadmium content. One time of foliar application is carried out respectively in the tillering stage, the heading period, and the pustulation period of rice growth process, and rice cadmium content is reduced by 51.3 to 68.5%. The rice cadmium reduction agent is simple to produce, low in cost, convenient to use, and excellent in cadmium reducing effect, and possesses excellent economic benefits, social benefits, and ecological benefits.

Description

technical field [0001] The invention relates to a rice cadmium-reducing agent for preventing and controlling soil cadmium pollution and reducing rice cadmium content, and belongs to the fields of cultivated land pollution control technology and crop cultivation technology. Specifically, it is a cadmium-reducing agent for rice, which is suitable for foliar spraying of rice planted in cadmium-contaminated soil to reduce the cadmium content of 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, the United Nations Environment Program proposed that cadmium was listed as the first among the l2 kinds of hazardous substan...

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