Microencapsulated selenium-enriched fertilizer for basal application of rice and preparation method of microencapsulated selenium-enriched fertilizer

Abstract

The invention discloses microencapsulated selenium-enriched fertilizer for basal application of rice. The microencapsulated selenium-enriched fertilizer comprises a core material and a wall material. The weight ratio of the core material to the wall material is (70-80): (20-30). The core material comprises selenium fertilizer, sulfate, nitrogenous fertilizer, potassic fertilizer, phosphate fertilizer, biological bacteria, peat and microelement additives. The wall material comprises modified rice residue albumen. The invention further discloses a preparation method of the microencapsulated selenium-enriched fertilizer for basal application of the rice. The microencapsulated selenium-enriched fertilizer has the advantages that a microencapsulation technology is adopted, the modified rice residue albumen serves as the wall material, and the sulfate is added into the core material to be applied with the selenium fertilizer, so that selenium absorption of rice roots and upward transfer of selenium are improved, fixation of the selenium is avoided, and selenium utilization rate is increased; fertilizer efficiency of microcapsules is released slowly, and accordingly, crop's need for nutrition in each growth stage is met.

Description

technical field [0001] The invention relates to the technical field of selenium-enriched fertilizers, in particular to a rice-based microencapsulated selenium-enriched fertilizer and a preparation method thereof. Background technique [0002] Selenium is an important component of some antioxidant enzymes and selenoproteins in the human body. Studies have shown that selenium has a variety of important physiological functions, such as the protection of cardiovascular and myocardial health, anti-oxidation, anti-cancer and anti-cancer. Selenium deficiency in the human body can lead to various diseases such as Keshan disease, cardiovascular and cerebrovascular diseases, cancer, and high blood pressure. Selenium cannot be produced in the body, and the selenium needed by the human body can only be taken in from food. 72% of China's areas are selenium-deficient or low-selenium areas, and about two-thirds of the country's population has insufficient selenium intake to varying degre...

AI Technical Summary

Problems solved by technology

At present, selenium-enriched fertilizers can be divided into foliar selenium-enriched fertilizers and basal selenium-enriched fertilizers according to the different fertilization methods. certain security risks

Due to the curing effect of selenium on the roots, the inability of selenium to be transported to the stems and leaves has always been an important factor affecting the promotion of selenium-enriched fertilizers.

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