Amino acid liquid fertilizer and preparation method thereof

The invention discloses an amino acid liquid fertilizer and a preparation method thereof. The amino acid liquid fertilizer comprises the following by weight percentage: 8-15% of a composite amino acidstock solution, 4-8% of a mixed concentrate of zeatin and corn polysaccharide, 2-5% of potassium dihydrogen phosphate, 2-5% of zinc, 3-6% of boron, 1-5% of magnesium, 5-10% of copper, 3-8% of manganese, and the balance of water; wherein the mixed concentrate of zeatin and corn polysaccharide is obtained by extracting niblets through hot water, the brewers yeast is subjected to fermentation and gelatinization, sodium hydroxide is used for dipping and filtering, and a filtrate is subjected to enzymatic hydrolysis through pectase and then condensation. Compared with the prior art, the amino acidliquid fertilizer has the advantages of low cost and good yield increasing effect. 本发明公开了种氨基酸液肥及其制备方法。该氨基酸液肥按重量百分比计，其组成为：复合氨基酸原液8-15％；玉米素、玉米多糖混合浓缩液4-8％；磷酸二氢钾2-5％；锌2-5％；硼3-6％；镁1-5％；铜5-10％；锰3-8％；余量为水；其中玉米素、玉米多糖混合浓缩液由玉米粒经热水浸提，啤酒