Botanical nutrient solution and preparation method thereof

The invention discloses a botanical nutrient solution and a preparation method thereof. The botanical nutrient solution is prepared through fermenting almond pulp, walnut pulp, and brown sugar or white sugar. The nutrient solution has the following advantages: 1, shells of dry fruits and nuts in the forest and fruit industry production are effectively used, so agriculture waste pollution is avoided; 2, the fruit setting rate of fruit trees is effectively improved, the quality of fruits is improved, the quality and the photosynthetic index of the fruit trees are effectively improved, and fruit yellows can be prevented and controlled to a certain degree; and 3, the botanical nutrient solution can be sprayed for a long term to change the environment of fruit trees to acidity from slight alkalinity and to change the alkaline environment of soil.