A rice planting method enriched in selenium and reduced in cadmium

Abstract

The invention discloses a rice planting method enriched in selenium and reduced in cadmium, belonging to the technical field of planting. The planting method includes the following steps: field selection, seedling raising, fertilization for site preparation, transplanting, field management, rice harvesting and storage; the field management includes spraying selenium-containing foliar fertilizer on the leaves, and the selenium-containing foliar fertilizer includes Sodium selenite, citric acid monohydrate, urea, potassium chloride, potassium dihydrogen phosphate; the specific method is to spray the selenium-containing foliar fertilizer once or twice on the leaf surface within a specific time before the rice breaks, and can simultaneously The effect of enriching selenium and reducing cadmium is achieved, and has the characteristics of simple implementation and remarkable effect.

Description

【Technical field】 [0001] The invention relates to the technical field of planting, in particular to a rice planting method enriched in selenium and reduced in cadmium. 【Background technique】 [0002] Selenium is one of the essential micronutrients for the human body. It is an essential component of the active site of the free radical scavenging enzyme glutathione peroxidase in the human body. It has the functions of scavenging peroxide, preventing cell damage, and delaying cell aging. Many studies have shown that selenium has an important relationship with anti-cancer and cardiovascular disease prevention. Selenium deficiency can cause various diseases in the human body, such as Keshan disease and Kaschin-Beck disease. There are 72% of counties and cities in China that have different degrees of deficiency. Selenium, and people in these areas often have insufficient selenium intake, and even in some soils with high selenium content, the selenium content in the food produced i...

AI Technical Summary

Problems solved by technology

[0004] At present, the main method to increase the selenium content of rice is to apply selenium-containing fertilizers, but improper application of this method may increase the content of heavy metals in rice; methods to reduce cadmium in rice grains include the application of apatite and lime rice straw , silicon fertilizer, polyhydroxy amino acid chelating agent and other soil remediation agents, and appropriate agronomic measures, etc., but these methods have the disadvantages of troublesome operation and high implementation cost

In addition, in the existing rice planting methods, only a single goal of selenium enrichment or cadmium reduction is often considered, and both are often not considered.

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