高寒草地放牧系统钼的季节变化及盈缺分析  

Seasonal Changes and Sufficiency or Lack Analysis of Mo in Grazing System of Alpine Grassland

作　　者：焦婷[1,2,3] 张力[4,5] 蒲小鹏[1,2,3] 刘荣堂[1,2,3] 

机构地区：[1]甘肃农业大学草业学院,甘肃兰州730070 [2]草业生态系统教育部重点实验室/甘肃农业大学,甘肃兰州730070 [3]中-美草地畜牧业可持续发展研究中心,甘肃兰州730070 [4]江苏畜牧兽医职业技术学院,江苏泰州225300 [5]中国农业科学院兰州畜牧与兽药研究所,甘肃兰州730070

出　　处：《中国草地学报》2008年第5期13-17,共5页Chinese Journal of Grassland

基　　金：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);已通过甘肃省科技厅的鉴定

摘　　要：对青海省三角城种羊场高寒草地夏(6月中旬)、秋(9月中旬)、冬(12月中旬)三季的水、土壤、牧草以及绵羊被毛、肝脏、粪中钼含量进行了调查采样分析。结果表明,土壤中钼除夏季与我国正常水平(0.17mg/kg)一致外,秋冬两季均较低;牧草中的钼为夏季>秋季>冬季,但均低于正常水平(1.00mg/kg);绵羊被毛中钼夏季高于正常值,而秋冬两季严重缺乏且与三季绵羊肝钼状况一致,都表现出与牧草相同的季节变化规律,即夏季>秋季>冬季。因此,青海三角城种羊场绵羊处于低钼的生态环境与营养状况。The content and seasonal changes of Mo in water, soil, forage , wool, liver and feces of sheep were studied in stud farm of Sanjiaocheng in Qinghai province. The results were as followsr： Mo content in soil was lower than normal level（0. 17mg/kg）in autumn and winter except for summer; Mo content in forage was higher in summer than in autumn and winter, but all lower than nomal（1.00mg/kg）; Mo content in wool of sheep was lower seriously than normal except for summer and lack seriously in liver in three seasons, but all showed the same seasonal change as the forage. In general, the sheep in the farm was in the ecological environment and nutrional condition of the low-Mo.

关 键 词：青海环湖地区 钼 土-草-畜生态体系 季节变化 

分 类 号：S812[农业科学—草业科学]