Ha-k can be used as organic potash fertilizers in agriculture, and anti-collapsing agent and dewatering agent in fresh mud in oil well drilling services. Application scope: 1. Used as organic potash fertilizer 2. Used as plant growth stimulant 3. Used as water-retaining agent of plants for fighting a frought 4. Used as environment-friendly soil conditioner 5. Used as preservative in oil well drilling services 25kg/50kg net plastic bag with pvc lining. Used as soil multi-functional compound fertilizer after combination with the elements of nitrogen and phosphorus, also used as soil ameliorator, plant growth stimulant and fertilizer efficiency promoter.As drilling mud treatment agent ion exchange, waste water treatment compound, heavy metal adsorbent and so on