Cadmium reducing agent for rape

Abstract

The invention relates to a cadmium reducing agent for rape. The cadmium reducing agent is prepared from cadmium reducing components, an adhesive, pigment and an aid through crushing and mixing. The cadmium reducing components are calcium acetate and magnesium sulfate, the adhesive is N-trimethyl chitosan, the pigment is brilliant blue and the aid is bentonite. The cadmium reducing agent is applicable to foliage spray of rape planted in cadmium contaminated soil and can reduce the cadmium content of rapeseeds. The cadmium reducing agent for the rape is mixed with water in the mass ratio being 1:(120-140) to be prepared into a suspension, foliage spray is performed once in the bolting period, the later blooming period and the middle silique development period of rape respectively, and the cadmium content of the rapeseeds is reduced by 40.6%-58.2%. The cadmium reducing agent has no adverse effects on normal growth of the rape and the soil environment quality. The cadmium reducing agent isconvenient to produce and use, low in cost and capable of reducing the cadmium content of the rapeseeds effectively and has significant economic, social and ecological benefits.

Description

Technical field [0001] The invention relates to a rapeseed cadmium reducing agent used for foliar spray treatment of rapeseed grown in cadmium contaminated soil to reduce the cadmium content of rape grains, and belongs to the fields of heavy metal pollution treatment technology and rape cultivation technology. Specifically, it is a rapeseed cadmium reducing agent, which is prepared by pulverizing and mixing cadmium reducing components, binders, colorants and additives. It is suitable for foliar spraying of rapeseed grown in cadmium contaminated soil to reduce rapeseeds. Cadmium content. Background technique [0002] Cadmium is a toxic metal element. After entering the human body, it can gradually accumulate in the liver, kidney, bones, lungs and other systems, causing damage to these systems. Symptoms of chronic cadmium poisoning are olfactory failure, fatigue, decreased hemoglobin, etc. Severe poisoning can lead to "bone pain" or even death due to complications. Among the 12 h...

AI Technical Summary

Problems solved by technology

The chemical passivation method to control the accumulation of cadmium in rapeseed grains by adjusting the soil pH or Eh through soil application of lime to reduce the bioavailability of cadmium in the soil, although the effect is quick and the effect is obvious, the amount of use is too large and the cost is too high , and will have a negative impact on soil quality, making it difficult to promote on a large scale