The present invention provides a yeast composition, which includes a basic element group, a main element group, a secondary element group and a trace element group that are mixed and dissolved into a cultivation medium through a mixing and dissolving process. The cultivation medium is subjected to a cooling strain inoculation process and a fermentation culture process so as to have the cultivation medium fermented to form fermentation broth of a composition. When the fermentation broth is spread into soil, ineffective phosphorus in the soil is converted into effective phosphorus, in order to increase effectiveness of phosphorus in the soil and improve soil nutrient status. In addition, when the fermentation broth is used, usage of chemical fertilizer can be reduced, in order to reduce soil degradation and environmental pollution. Furthermore, when the fermentation broth is spread into the soil, root ring protection can be increased, in order to promote plant growth and the ability to absorb water and nutrients. In addition, the fermentation broth of the present invention can extend plant life, neutralize or decompose toxic substances, increase resistance to disease and drought for the plant, improve survival rate of crops against stress, and make the plant bloom early.一種酵母菌組成物，包含將一基本元素組、一主要元素組、一次量元素組及一微量元素組經由一混合溶解程序混合溶解成一培養基，再將該培養基經由一冷卻接入菌種程序及一發酵培養程序使該培養基發酵形成一為組成物的發酵液。將該發酵液撒入土壤中時，能將土壤中的無效性磷轉變為有效性磷，提高土壤中磷的有效性而可提高土壤的營養狀況。另，採用該發酵液時，可相對減少化學肥料的施用，降低土壤劣化及環境汙染。又，當該發酵液撒入土壤中時，能提高根圈保護、促進植物生長及吸收水分與養分的能力。此外，本發明之該發酵液甚至是能延長植物壽命、中和或分解毒害物質、增加植物抗病及抗旱的能力、提高作物抗逆境移植存活率及提早開花等多功能之特性。
