Abstract: The trail was conducted to study the contents of mineral elements and their seasonal dynamic changes, as well as the situation of surplus or deficiency of essential trace elements in plant soil and livestock.So, analyzed the contents of kalium( K), sodium( Na), calcium( Ca),magnesium( Mg), ferrum( Fe), zincum( Zn), cuprum( Cu),manganese( Mn) of wild hempleaf nettle in Ortindag Sandy Land, Inner Mongolia.The results showed that hempleaf nettle had high mineral contents, and it was rich in Ca,Mg,K,Fe.The sort order of average content of all elements was K＞Mg＞Ca＞Na,Fe＞Mn＞Zn＞Cu.With the time going,Ca,Mg,K,Fe,Zn,Cu and Mn content decreased,Na increased.Fe in plant and soil was sufficient in the whole year, and it met with livestock requirement.But if fed lots of hempleaf nettle in spring, animal probably occurred Fe poisoning.In spring and summer,Zn and Mn contents in plant was within normal limits.Mn could meet with cattle requirement in spring-summer, but it lacked seriously in autumnwinter.Cu in plant was at almost normal level in summer-autumn, and could meet cattle requirement only in May, and it could not meet cattle's in other seasons, but Zn could not meet cattle's at all in the whole year．

Key words: Ortindag sandy land, Hempleaf nettle, Essential mineral elements, Degree of surplus or deficiency, Salt resistance

CLC Number: 

• S563