Almost totally soluble powder, convenient application with various methods. Nutritionally, sharply increase the utilization efficiency of NPK and other fertilizers in soil. Physically, optimize soil structure, boost the capacity of water holding and cation exchange and improve aeration condition. Besides, these benefits will be further helpful for plants to resist drought stress. Chemically, as chelating and buffering agent, help hold water soluble inorganic fertilizers, prevent them from leaching, and protect plants from drastic change in PH. Biologically, establish a desirable environment for microorganism development, stimulate root respiration, formation and growth, and thus increase crops yield and improve the quality. It is very suitable to be applied directly or used as raw material for formulation. .