高寒草地放牧系统锰的季节变化及盈缺分析  

Seasonal variation and supply-demand analysis of manganese in alpine grazing grassland system

作　　者：赵生国[1] 焦婷[2] 张力[3,4] 曹文侠[2] 

机构地区：[1]甘肃农业大学动物科技学院,甘肃兰州730070 [2]甘肃农业大学草业学院草业生态系统教育部重点实验室中-美草地畜牧业可持续发展研究中心,甘肃兰州730070 [3]江苏畜牧兽医职业技术学院,江苏泰州225300 [4]中国农业科学院兰州畜牧与兽药研究所,甘肃兰州730050

出　　处：《草业科学》2009年第6期132-135,共4页Pratacultural Science

基　　金：甘肃省自然基金(3ZS041-A25-049);社会公益研究专项资金项目"青藏高原生态畜牧业试验与示范"(2001DIB10061)

摘　　要：对青海三角城种羊场夏(6月中旬)、秋(9月中旬)、冬(12月中旬)3季的水、土壤、牧草、绵羊被毛、血液、组织器官中锰含量进行了调查采样分析,结果表明,土壤锰含量夏季高于秋冬两季,都处于正常范围的下限,牧草和绵羊组织器官(肝脏除外)中锰为夏季>秋季>冬季,冬季则处于临界缺乏水平。从整个土壤-牧草-畜体生态体系来看,青海三角城种羊场绵羊冬季处于临界缺锰的营养状况。The content and seasonal changes of Mn in water, soil, edible grass （gained by fistula set on esophagus）, wool and other organs such as plasma, liver, skeleton in sheep on Sanjiaocheng Sheep Farm of Qinghai Province from mid June to mid December were studied. The results indicated that Mn content in soil was higher in summer than that in autumn and winter but all were in lower threshold of normal level. In edible grass and sheep organs （except for liver）, the order of Mn contents in different seasons was summer ）〉 autumn 〉 winter, and it was insufficient in winter. Generally, in terms of soil-forage-sheep ecosystem, the Mn supply for sheep was insufficient in winter.

关 键 词：锰 土-草-畜生态体系 季节变化 

分 类 号：S812[农业科学—草业科学]