Biological fertilizer and preparation method thereof

Abstract

The invention belongs to the technical field of fertilizer preparation, and discloses a biological fertilizer and a preparation method thereof. The biological fertilizer is prepared from the ingredients of a culture substrate and a carrier substrate, wherein the culture substrate is prepared from glucose, yeast extracts, beef extracts, peptone, primary fermentation bacteria, secondary fermentationbacteria, and tertiary fermentation bacteria; the carrier substrate is prepared from bean cake, rapeseed cake and wheat bran according to a mass ratio of 1 to 2 to 3. Meanwhile, a preparation methodis disclosed. Arbuscular mycorrhizal fungi capable of forming a symbiotic system with most crops for promoting the plant growth is used; the rhizobium fertilizer can achieve a stable effect since therhizobium fertilizer can form the symbiotic system with the plants; the arbuscular mycorrhizal fungi belongs to another kind of microbes capable of forming a symbiotic system with various kinds of plants; the plant growth can be promoted; the crop yield can be improved; a stable effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of fertilizer preparation, and in particular discloses a biological fertilizer and a preparation method. Background technique [0002] my country's arable land area is nearly 140 million hectares, the national population is about 1.3 billion, and the per capita arable land area is 0.1 hectares, which is only 37.5% of the world's per capita arable land area of ​​0.27 hectares. On the existing land, in order to meet the people's growing demand for agricultural products, increasing the multiple cropping index will increase the total output to a certain extent. There are certain difficulties in expanding the cultivated land, and the practical way is to increase the yield per unit area. [0003] Fertilizer is the food of crops, and to a certain extent, it can also be said that fertilizer is the basis for human survival. Long-term application of chemical fertilizers pollutes groundwater, soil compaction, and red...

AI Technical Summary

Problems solved by technology

[0006] Existing biological fertilizers do not use compost powder with rich nutrition and strong adsorption capacity as the medium adsorbent; do not use arbuscular mycorrhizal fungi that can form a symbiotic system with most crops and promote plant growth; do not use bacterial inoculants and arbuscular mycorrhizal fungi Fungal inoculants interact to achieve a good synergistic effect; some new strains have not been selected and developed to further improve their effectiveness and adaptability; and the existing biological fertilizers are poor in environmental protection

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