Method for planting rice to reduce absorption of heavy metal cadmium

Abstract

The invention relates to a method for planting rice to reduce absorption of heavy metal cadmium, comprising the following steps: 1. feeding water in a rice field, scattering and applying biological cadmium-reduction element-containing compound bio-organic fertilizer into the rice field based on the usage amount of 35kg per mu; ploughing through a rooter so as to enable the biological cadmium-reduction element-containing compound bio-organic fertilizer to be evenly distributed in the soil of the rice field; finally transplanting rice seedlings; 2. after rice seedlings are transplanted for eight days, and water is fed into the rice field for three days, scattering and applying biological cadmium-reduction element-containing compound bio-organic fertilizer into the rice field according to the usage amount of 20kg per mu; 3. after paddy rice ears for eight days, keeping the soil of the rice field moistened; adding water into biological cadmium-reduction element for diluting by 20 times and spraying leaf surfaces according to the usage amount of 1kg per mu. According to the method, the compound bio-organic fertilizer is evenly distributed in the soil, the absorption of rice roots on the heavy metal can be reduced, the method is especially suitable for planting rice seedlings at regions, with water and soil seriously polluted by heavy metals, in Xiang river and Dongting lake drainage basins, not only can the working hours be saved, but also the problem that the heavy metal cadmium in the rice exceeds the standard can be solved.

Description

technical field [0001] The invention relates to rice planting technology, in particular to a planting method applicable to areas polluted by heavy metals due to water quality and soil environment and reducing the absorption of heavy metal cadmium by rice. Background technique [0002] In areas where the water quality and soil environment are polluted by heavy metals, the heavy metals in the harvested agricultural products usually exceed the standard. Grain quality and safety is related to the health and safety of the people. It is a major issue of people's livelihood. The relevant government departments attach great importance to it. They should strengthen supervision in all aspects of production and distribution, resolutely prevent problematic rice from flowing to the dining table, and ensure that the people can eat " Don't worry about food." Know more about the hazards of cadmium-excessive rice. The most serious hazards of cadmium to the body are connective tissue damage,...

AI Technical Summary

Problems solved by technology

1. Long-term exposure to a certain dose of cadmium mainly causes kidney damage , manifested as a large amount of urine low molecular weight protein ,because renal tubule Impaired function, resulting in calcium, phosphorus and vitamin D metabolism disorders, which in turn lead to osteomalacia And loose, severe cases are extremely prone to pathological fracture , seriously affecting the patient's working ability and quality of life

2. The impact of bone damage is osteomalacia and Osteoporosis , In addition, after people eat this kind of rice with excessive cadmium content, cadmium will cause disease in the human body. bone pain