Study Of Dissolved Law Of Nutrition Element In Potassium-calcium Fertilizer

"A producing potassium-Calcium fertilizer method" is an inventive patent. In potassium-Calcium fertilizer, content of K₂O is from 4% to 7%, content of CaO is from 25% to 35%and content of SiO₂ is from 24% to 35%. Studying physical character and chemic character of potassium-Calcium fertilizer is important and realistic meaning. Studying dissolved law of K₂O, CaO and SiO₂ is one of aspects that physical character and chemic character is studied. To study dissolved law of K₂O, CaO and SiO₂, the literature has been published. But in these literature mutual action in factors could not been studied, thus, I further study dissolved law of K₂O, CaO and SiO₂ in the Potassium-Calcium fertilizer by Orthogonal design and Uniform design on the base of the single factor method . Which overcome faults of the single factor method. By test result, conclusion that is reached by orthogonal design method and uniform design method is accordant to conclusion in the literature. In particular, more information has been gotten by Uniform design method. That conclusion is reached : acid degree is the primary factor, librating time is number two, temperature is neglected the mutual effect is unconspicuous by statistic . extending acid degree and librating time, dissolved quantities of K₂O, CaO and SiO₂ increase. Test result is satisfied.