Medium-trace element fertilizer suitable for planting paddy rice in soil polluted by cadmium

Abstract

The invention discloses medium-trace element fertilizer suitable for planting paddy rice in soil polluted by cadmium, which relates to fertilizer. The medium-trace element fertilizer is prepared from the following substances: calcium chloride, magnesium chloride, zinc sulfate, copper chloride, iron sulfate, ferrous sulfate, manganese chloride, borax, additives and filler. Not only can the medium-trace element fertilizer provide a great amount of medium trace elements to the paddy rice and improve the growth quality of the paddy rice, but also can play a role in well inhibiting the heavy metal cadmium; and when the medium-trace element fertilizer is applied to the paddy rice planted in the soil with severe pollution of heavy metal cadmium, the cadmium content in paddy rice grains can be reduced by a half or more, the application utilization effect is good, and the popularization value is high.

Description

technical field [0001] The invention relates to a fertilizer, in particular to a medium and trace element fertilizer suitable for rice planting on soil polluted by cadmium. Background technique [0002] Soil is not only the material basis for human survival and development, but also an important part of the ecological environment. Its environmental quality is directly related to the safety of agricultural products and has a profound impact on human health. Along with the further development of economic globalization, human factors such as mining and smelting, vehicle exhaust emissions, urban garbage dumps, industrial "three wastes" emissions, and unreasonable use of heavy metal-containing pesticides, fertilizers, and plastic films have intensified. soil heavy metal pollution. Soil heavy metal pollution has the characteristics of concealment, latent, long-term and irreversible. Heavy metal pollutants can not only damage the soil ecosystem and reduce crop yields, but also ac...

AI Technical Summary

Problems solved by technology

Cadmium (Cd) element pollution ranks second among the "five poisonous" elements (mercury, cadmium, lead, chromium, arsenic), and poses a huge safety hazard to human health. People have developed a variety of methods to improve this problem , it is generally used to reduce the cadmium content in the soil by applying chemical reagents. Although it has a good effect, it cannot be effectively promoted due to the high cost. At the same time, although the cadmium content is reduced, it will also bring other elements. pollution, so there is an urgent need for a method that can effectively improve this problem