The annual development and the relativity of six mineral nutritious elements (N, P, K, Ca, Fe and Zn) of Kuerlepear leaves were studied during seven growth periods. The result showed that the contents of N、P and Kin the leavesmanifested a decreasing tendency in a year .The contents of Ca、Fe、Zn were increasing in early period , obviously decrea-sing in later period, the times of reaching climax were different. Elements N、P and K showed extremely remarkable positiverelativity, P and K showed remarkable positi...