Special selenium-rich liquid fertilizer for moso bamboo shoots and preparation method of fertilizer

Abstract

The invention relates to a special selenium-rich liquid fertilizer for moso bamboo shoots and a preparation method of the fertilizer. The liquid fertilizer comprises an organic and inorganic mixed selenium source prepared from potassium nitrate, potassium dihydrogen phosphate, dipotassium hydrogen phosphate, boric acid, EDTAZnNa2, EDTAMnNa2, NaFeEDTA, sodium silicate, ammonium molybdate, 5-nitroguaiacol sodium salt, sodium dodecyl benzene sulfonate, sodium benzoate and a selenium-rich yeast, wherein the organic and inorganic mixed selenium source is formed by preparing the selenium-rich yeast into a seed and then carrying out fermentation enrichment culture, inactivation and decomposition in an inorganic selenium containing culture medium. The preparation method comprises the following steps of dissolving effective components according to a certain sequence; regulating a pH value; and treating until constant volume is achieved. The special selenium-rich liquid fertilizer for the moso bamboo shoots, which is disclosed by the invention, has the advantages of comprehensive nutrient element, reasonable and safe formula, high fertilizer utilization ratio, no environmental pollution and the like, is convenient to fertilize, improves the utilization efficiency of a selenium element and increases the selenium content of bamboo shoots by using an organic selenium source and ensures the safety in fertilizer use and selenium-rich moso bamboo shoot eating.

Description

technical field [0001] The invention relates to a compound fertilizer and a preparation method thereof, in particular to a special liquid fertilizer for moso bamboo shoots rich in selenium and a preparation method thereof. Background technique [0002] Selenium is an essential trace element for the human body, which widely exists in the internal organs of the human body and plays an irreplaceable and important role in human health. Eating selenium-enriched food is a safe, economical and efficient way to supplement selenium to human body. However, most areas in southern my country are selenium-deficient areas, and some areas are severely selenium-deficient areas, and most residents in selenium-deficient areas lack awareness and ways to supplement selenium. At the same time, moso bamboo is distributed in most areas south of the Yangtze River in my country, and most of the residents in moso bamboo production areas have the traditional habit of eating moso bamboo shoots. Seleni...

AI Technical Summary

Problems solved by technology

There are not many domestic reports on selenium enrichment of bamboo plants, which mainly focus on the study of selenium enrichment of bamboo plants by using selenium-enriched organic or inorganic solid fertilizers. The selenium source is mainly inorganic selenium such as sodium selenite or sodium selenate, and the added After the solid fertilizer of inorganic selenium is fertilized, it will cause point source pollution to the fertilized soil and nearby water sources and water bodies. After a large area of ​​fertilization or multiple fertilization, it will accumulate in the soil and water bodies. If the concentration is too high, it will harm nearby animals. plant safety

At present, the patents on liquid selenium-enriched fertilizers mainly focus on multi-effect multi-component compound foliar selenium fertilizers, slow-release foliar fertilizers, amino acid selenium fertilizers, fruit tree selenium-enriched infusion fertilizers, and special liquid fertilizers for economic plants such as carrots, honeysuckle, and green tea. , there is a large difference between the ratio of elements and the demand for liquid fertilizer of bamboo shoots, and it cannot be directly transferred to bamboo shoots

Moreover, in the process of preparing liquid fertilizer, it is mainly prepared by putting various nutrient elements into a reactor or other equipment and containers and stirring them, and there is a problem of precipitation after a period of storage.

The reports on the use of liquid fertilizers for injection fertilization in bamboo cavity mainly focus on important bamboo species such as Moso bamboo and Phyllostachys praecox, but most of the selenium sources are sodium selenite, sodium selenate and other inorganic selenium and slag or rare earth. The organic selenium source has the disadvantages of high toxicity and low utilization efficiency, not only high agricultural production costs, but also easy to cause environmental pollution

In the "Effects of Selenium-enriched Fertilization on the Quality of Bamboo Shoots of Moso Bamboo" published by Meng Yong et al., selenium-enriched fertilizers use inorganic selenium sources. brown phenomenon