Preparation method of biological root-irrigation fertilizer special for peppers

The invention relates to a preparation method of biological root-irrigation fertilizer special for peppers. According to a formula of the biological root-irrigation fertilizer, the biological root-irrigation fertilizer is prepared from the followings in percentage by weight: 1.6-2.6% of isoleucine, 2.1-3.1% of choline chloride, 1.3-2.3% of magnesium oxide, 2.7-3.7% of bifidobacterium longum, 1.2-2.2% of sodium hydroxide, 2.8-3.8% of yohimbe bark extract, 2.9-3.9% of bacillus bifidus factor, 1.9-2.9% of sorbitol anhydride monostearate, 2.2-3.2% of cordycepic hypha, 1.7-2.7% of enterobacter agglomerans, 1.3-2.3% of benzoic acid, 1.5-2.5% of aspergillus niger, 0.6-1.6% of patrinia, 0.7-1.7% of potentilla chinensis, 0.8-1.8% of houttuynia, 0.9-1.9% of andrographis paniculata, 1-2% of menadionedimethylpyrimidinol bisulfite, 0.5-1.5% of bacillus lentus, 0.3-1.3% of manganese carbonate, 1.1-2.1% of snake gall extract and 70.9-50.9% of water. According to the preparation method of the biological root-irrigation ferti