Selenium-rich biological organic liquid fertilizer, preparation method and applications thereof

Abstract

The invention provides a selenium-rich biological organic liquid fertilizer, a preparation method and applications thereof. According to the present invention, fermenting is performed with a compositestrain by using an aqueous solution containing brown sugar, peptone, potassium dihydrogen phosphate, sodium selenite, selenium dioxide, beef extract and other trace elements as a culture medium to obtain the selenium-rich biological organic liquid fertilizer, wherein the inorganic selenium in the raw material can be converted into the organic selenium through the fermenting so as to fully guarantee the use safety of the selenium element, such that the crop with high safety and high selenium content can be obtained; and with the application of the selenium-rich biological organic liquid fertilizer to carry out root application of crops, the harmful substances in the soil can be decomposed by the beneficial biological flora rich in the selenium-rich biological organic liquid fertilizer so as to completely improve the soil variety.

Description

technical field [0001] The invention relates to the field of fertilizers, in particular to a selenium-enriched bio-organic liquid fertilizer and a preparation method and application thereof. Background technique [0002] The promotion of ecological agriculture and the protection of the ecological environment and farmland soil are becoming a research hotspot for environmental protection and agricultural science and technology personnel. However, with the increase in the use of chemical fertilizers, a series of problems have emerged while increasing crop yields: ordinary chemical fertilizers dissolve too quickly, decompose when heated, plus surface runoff, underground infiltration, unfavorable weather conditions, etc., fertilizers Serious loss and low fertilizer utilization rate not only cause waste of energy and resources and economic loss, but also cause serious pollution to the ecological environment such as water sources. Long-term use of chemical fertilizers will affect t...

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Problems solved by technology

However, with the increase in the use of chemical fertilizers, a series of problems have emerged while increasing crop yields: ordinary chemical fertilizers dissolve too quickly, decompose when heated, plus surface runoff, underground infiltration, unfavorable weather conditions, etc., fertilizers Serious loss and low fertilizer utilization rate not only cause waste of energy and resources and economic loss, but also cause serious pollution to the ecological environment such as water sources. Long-term use of chemical fertilizers will affect the farmland ecosystem, soil physical and chemical properties and soil microbial system. Causes severe damage and causes soil compaction

[0004] At present, the production of selenium-enriched agricultural and sideline products is mainly carried out by applying inorganic selenium salts such as selenium dioxide or selenite to crops. However, due to the limited absorption of simple inorganic selenium by crops, excessive application of inorganic selenium will not only It will cause loss and waste of selenium, and also cause water and soil pollution due to excessive selenium

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