Method for planting selenium-enriched rice

Abstract

The invention discloses a method for planting selenium-enriched rice, comprising the following steps: (1) pretreatment of rice fields; (2) transplanting of rice seedlings; (3) fertilization at tillering; (4) stocking of ducks; (5) fertilization at full heading; and (6) harvesting. The broad bean selected in the present invention is a green manure which can be combined with a nitrogen-fixing bacteria to increase the nitrogen content of the soil, and provide fertilizer for the long-term growth of the rice seedling; the turning over of green manure and retting before the transplanting further increase the soil fertility and the balance of the elements, so that the rice seedlings are balanced; and the organic selenium fertilizer is sprayed during the process of broad bean cultivation so as toincrease the selenium content of the broad bean, the organic selenium content in the soil is greatly increased after turning over of green manure and retting, and the absorption of organic selenium inrice is increased, which greatly increases the selenium content in rice. The method increases the selenium content of rice by increasing the interaction between increase in soil organic selenium content and spraying of organic selenium fertilizer.

Description

technical field [0001] The invention relates to a planting method of 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 selenomethionine, selenium-enriched tea, selenium-enriched malt, a...

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