Efficiency of granulated blast furnace slag powder 1 to save the amount of cement 30-60% (including cement mortar), reduce the cost of cement and concrete projects. 2 with the role of volcanic ash, increase concrete compressive, tensile, bending, shear strength. 3. Significantly reduced the hydration heat of concrete, improve the concrete workability, reduce segregation and bleeding, reduce the large volume concrete temperature changes and stress, inhibition of temperature and cracks. 4 can inhibit the alkali aggregate reaction, significantly improve the ability of concrete anti alkali aggregate reaction. 5 can be in the form of micro aggregates in the concrete, improve the concrete in the hole structure, so that the pore size can be refined and uniform, improve the permeability of concrete, freeze-thaw resistance and durability. 6 can significantly reduce the bleeding amount of cement concrete, improve cement concrete workability. 7 can effectively improve the cement concrete resistance to seawater and fresh water erosion, resistance to sulfate erosion. Especially suitable for anti seawater engineering, underground engineering and pavement engineering. 8 with the same amount of water, the plastic concrete can be formulated to avoid the quality problems caused by the reinforcement of the reinforced concrete and the poor vibration. Under the same conditions, the concrete can be made into the flow pattern of the mold, reduce the concrete pump, pipe and mold wear and prolong the service life of the concrete pump. 9 can be made of masonry, plastering cement mortar and low grade cement. In the case of meeting the strength requirements, not only can save the cement of 30-60%, but also improve the operability of the construction. 10 suitable for the production of environmentally compatible type of cement based materials and high performance concrete admixture. Method for the use of phosphate rock powder Suitable for rock phosphate fertilizer in acid soil, is not suitable for dressing. As the fertilizer application amount of phosphate powder should be considered depending on the available phosphorus content, generally about 100 pounds per acre. According to the uniform land tillage applicator, then turn into the root depth. The phosphate rock long effective period, after the implementation of separate 1-2 zaishi. Phosphate rock powder should be arranged in acid and phosphorus deficiency.