Product Description
Vermiculite can be used as a soil improvement agent. Due to its good cation exchange and adsorbability, it can improve the structure of soil, conserve water, improve soil breathability and water content, and change acidic soil into neutral soil. Vermiculite also ACTS as a buffer, hindering the rapid change of pH value, making fertilizer slowly released in the growing medium of crops, and allowing a little excessive use of fertilizer without harm to plants; Vermiculite can also provide plants with k, Mg, Ca, Fe and trace mn, Cu, Zn and other elements. Vermiculite's water absorption, cation exchange and chemical composition characteristics make it play a role of fertilizer, water, water storage, ventilation and mineral fertilizer and other multiple roles. The experimental results show that the crop yield can be increased by 15-20% by adding 0.5-1% expanded vermiculite into compound fertilizer.