Planting method of green organic selenium- and zinc-rich nutritional rice

Abstract

The invention discloses a planting method of green organic selenium- and zinc-rich nutritional rice, which comprises the steps of firstly preparing a selenium-zinc organic chelating solution containing selenium and zinc by using selenium dioxide, zinc sulfate, methionine, fulvic acid and water; during use, according to the dosage of 200 g of the selenium-zinc organic chelating solution for each muof a rice field, diluting with 200 to 300 times of water, spraying on the leaf surfaces for once during a booting stage of rice, or spraying on the leaf surfaces for once respectively during the booting stage and a pustulation period of rice, or spraying on the leaf surfaces for once respectively during a tillering stage, the booting stage and the pustulation period of rice, harvesting after therice is mature, and removing the hull, thus obtaining the green organic selenium- and zinc-rich nutritional rice.According to the planting method provided by the invention, through spraying a selenium-zinc organic chelating agent on the leaf surfaces, a biochemical process is carried out inside the rice, so as to enable the selenium content and zinc content in the rice to reach 0.070 to 0.270 mg / kg and 12 to 25 mg / kg respectively, which are 2 to 10 times of the selenium content and zinc content in a selenium- and zinc-lack ecological environment.The rice meets the limited sanitary standards for selenium and zinc in foods (GB1305-91, 1306-91) and the Recommended Dietary nutrient Allowance issued by China, so as to be called as the green organic selenium- and zinc-rich nutritional rice.

Description

technical field [0001] The invention relates to the technical field of agricultural planting, in particular to a planting method of green organic selenium-enriched zinc nutritious rice. Background technique [0002] There are more than 40 countries and regions in the world that are deficient in selenium. my country is a big country deficient in selenium. According to the Atlas of Local Diseases and Environmental Factors of the People's Republic of China, it runs diagonally from the three northeastern provinces to the Yunnan-Guizhou Plateau, occupying my country's territory. There is a low selenium area in 72% of the area, of which 30% are areas with severe selenium deficiency, and the selenium content of natural foods such as grain is low. Large and medium-sized cities in North China, Northeast China and Northwest China are all selenium-deficient areas. In parts of 22 provinces and cities in China, about 700 million people live in low selenium areas. The content of selenium...

AI Technical Summary

Problems solved by technology

At present, the standard selenium supplementation level of more than 40 micrograms per person per day is still not reached in the food of the population in our country, especially for people in selenium-deficient areas, it is even more difficult to achieve the purpose of selenium supplementation from food