Bio-fertilizer and preparation method thereof

Abstract

The invention discloses bio-fertilizer and a preparation method thereof. The bio-fertilizer comprises, by weight, 180-200 parts of fertilizer body, biological bacteria including 0.08-0.09 part of bacillus thuringiensis, 0.1-0.15 part of paenibacillus polymyxa, 0.2-0.25 part of azotobacter chroococcum, 0.05-0.07 part of bacillus subtilis, 0.1-0.15 part of lactobacillus acidophilus and 0.1-0.15 partof lactobacillus bulgaricus, 18-20 parts of functional carrier and auxiliary materials, the functional carrier is obtained by mixing zeolite, sepiolite and bentonite, and the auxiliary materials include 0.1-0.2 part of polyglutamic acid, 5-6 parts of potato powder, 0.1-0.2 part of humic acid, 5-6 parts of volvaria volvacea, 4-5 parts of garlic, 8-10 parts of pleurotus ostreatus and 12-13 parts ofselenium ore. Aiming at the characteristic that vegetables or fruit plants are low in efficiency of absorbing inorganic selenium, the selenium ore is ground into powder which is then prepared into asolution and a culture medium to culture zymophyte, and the cultured zymophyte serving as fertilizer can be absorbed by plants better, so that selenium content of planted and treated vegetables and fruits is increased. The solution formed by selenium ore powder is treated layer by layer, so that selenium therein is retained, and heavy metals therein are eliminated.

Description

technical field [0001] The invention relates to the technical field of biological fertilizers, more specifically, the invention relates to a biological fertilizer and a preparation method thereof. Background technique [0002] Selenium has antioxidant effects, can enhance human immunity, has the effect of antagonizing harmful heavy metals, and anti-cancer effects. China is a big selenium-deficient country, and medium and large cities in North China, Northeast China, and Northwest China are all selenium-deficient areas. How to supplement selenium correctly and effectively has become a major problem. [0003] The human body mainly obtains selenium from plant or animal food, among which, plant selenium content is high and easily absorbed by the human body, which is the best source of selenium supplementation. The selenium content of grains grown by conventional methods is limited, and special selenium-containing fertilizers must be applied to increase the selenium content of p...

AI Technical Summary

Problems solved by technology

[0004] At present, selenium-enriched rice, selenium-enriched dragon fruit, selenium-enriched tea and other products are common, but the absorption rate of inorganic selenium by plants such as rice, dragon fruit and tea trees is not high, far less than that of fermented strains or edible fungi. Absorption conversion rate of bacteria