Selenium-enriched rice planting method

Abstract

The invention discloses a selenium-enriched rice planting method. The method comprises the following steps: S1, pretreating a rice field; S2, transplanting rice seedlings; S3, fertilizing during tillering: 7-9 days after transplanting the seedlings, keeping the water depth in the rice field to be 8-10 cm, and applying 100-120 kg of a mixed fertilizer per mu, wherein the mixed fertilizer includes the following raw materials in parts by weight: 100-165 parts of an organic fertilizer, 60-90 parts of an inorganic fertilizer, 3-5 parts of chitosan, 8-12 parts of croton powder, and 15-25 parts of a coating material; S4, fertilizing during full heading: after the seedlings are full in heading, keeping the water depth in the rice field to be 8-10 cm, dressing 3-4 kg of urea per mu, and spraying 40-180 kg of an aqueous solution of an organic selenium fertilizer per mu, wherein the weight ratio of the organic selenium fertilizer to water is 1: (400-600); the content of selenium in the organic selenium fertilizer is 0.1-0.3 mg / kg; S5, harvesting. The rice planted by adopting the method provided by the invention is high in selenium content and good in quality.

Description

technical field [0001] The invention relates to the technical field of rice planting, in particular to a method for planting selenium-enriched rice. Background technique [0002] Selenium is a very important trace element in the ecological environment. It is now medically proven that selenium deficiency is related to various diseases. 72% of my country's regions are in selenium-deficient and low-selenium belts. The lack of selenium in the soil has caused the general lack of selenium nutrition in my country's agriculture and animal husbandry. Therefore, the selenium content in people's food is low, and the lack of selenium intake seriously affects people's health. . [0003] There are two ways for the human body to supplement selenium: one is to take inorganic selenium directly; the other is to eat more foods or drinks rich in organic selenium. Inorganic selenium has a low absorption rate and has certain toxicity. Selenium supplement products on the market include selenometh...

AI Technical Summary

Problems solved by technology

The absorption rate of inorganic selenium is low, and it has certain toxicity; the selenium supplement products in the market include selenomethionine, selenium-enriched tea, selenium-enriched malt and selenium-enriched eggs, etc. These products are relatively expensive and cannot meet the needs of people for selenium supplementation