Rice production method for lowering heavy metal cadmium pollution

Abstract

The invention belongs to the technical field of rice production, and discloses a rice production method for lowering heavy metal cadmium pollution. The rice production method for lowering heavy metalcadmium pollution comprises the steps: after autumn harvest, stubble is left in a paddy field, plant ash is scattered for covering, plowing treatment is conducted after 3-7 days, and heavy metal polluted water is prevented from entering the paddy field; early-mature rice varieties with high disease resistance are selected to be pretreated, and seeds are soaked, disinfected through trichloroisocyanuric acid, and then subjected to pregermination and seedling culture for standby application; about 15 days before transplanting of rice seedlings, water treated through caustic soda or lime and polyaluminum chloride conducts field steeping, and arabis gemmifera is planted on the two sides of ridges; and after field steeping is completed, the paddy field is ploughed, special fertilizer is applied,then the rice seedlings are transplanted, and regular drainage, water replenishing and fertilization are conducted. The adopted method is simple and good in effect, the cadmium treatment cost is lowered, the economic benefits of farmers are increased, the rice yield is increased, and food safety is ensured.

Description

technical field [0001] The invention belongs to the technical field of rice production, and in particular relates to a rice production method for reducing heavy metal cadmium pollution. Background technique [0002] Cadmium is a non-essential element for the human body. It often exists in the form of compounds in nature, and its content is generally very low. Under normal environmental conditions, it will not affect human health. Cadmium and zinc are congener elements, and cadmium often coexists with zinc and lead in nature. When the environment is polluted by cadmium, cadmium can be enriched in organisms and enter the human body through the food chain to cause chronic poisoning. After cadmium is absorbed by the human body, it forms cadmium-sulfur protein in the body, which selectively accumulates in the liver and kidney. Among them, the kidney can absorb nearly 1 / 3 of cadmium in the body, and is the "target organ" of cadmium poisoning. Other organs such as spleen, pancre...

AI Technical Summary

Problems solved by technology

[0005] In summary, the existing problems in the prior art are: the existing rice planting methods for controlling or reducing heavy metal pollution are cumbersome, have high input costs, poor effect, low economic benefits for farmers, affect rice yield, and cannot bring high-quality and non-toxic products. Contaminated or up-to-standard rice cannot guarantee food safety

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