The content and the state of sufficiency or lack of N,P,K,Ca,Mg,S,Fe,Mn,Zn,Cu,Mo、Se in 8 styles and 6 types of grassland in Suniteyou banner were analyzed.The results showed that plant community's N content from study area in August was 16.86g/kg;the pasture was rich in Ca but lack of P,and calcium-phosphorus ratio showed imbalanced seriously,so grazing livestock should pay attention to supplement of P;the content of K,Mn,and S in pasture was normal and the content of Fe,Mn was high,so grass nutrients can satisfy the demand of livestock in warm seasons;the content of Cu,Zn,Se was low,so diets should be supplied with them appropriately.The enrichment order of trace elements in different grassland type in study area was River pan and lake basin lowlands salt meadow pasture ＞＞Monadnock sloping steppe desert pasture＞ Hilly steppe pasture＞ Hilly desert steppe pasture ＞ High plain desert steppe pasture ＞ Dune vegetation pasture.%对内蒙古苏尼特右旗6个草场类8个草场型草群的氮、磷、钾、钙、镁、硫、铁、锰、铜、锌、钼、硒的含量及盈缺状态进行分析,结果表明:苏尼特右旗草群8月平均氮含量为16.86g/kg；草群富含钙但缺磷,钙磷比严重不平衡,放牧家畜应注意磷的补充；草群钾、锰、硫含量中等,放牧季可满足家畜的需要；草群富含铁,锰含量也较高,放牧季可满足家畜的需要；草群铜、锌、硒含量很低,家畜日粮中应适当补充.研究区不同植被类型草群微量元素富集顺序为:河泛地、湖盆低地盐生草甸草场类＞＞残丘坡地草原化荒漠草场类＞低山丘陵干草原草场类＞丘陵地荒漠化草原草场类＞高平原荒漠草原草场类＞沙丘植被草场类.
展开▼
