昭苏马场不同草地类型土壤养分特征研究  

Research of the Distribution of Soil Nutrition at Different Rangeland Types at Zhaosu Horse Farm

作　　者：贠静[1] 于辉[2] 安沙舟[3] 王高峰[3] 李海 

机构地区：[1]新疆畜牧科学院草业研究所,乌鲁木齐830000 [2]新疆农业大学科研管理处,乌鲁木齐830052 [3]新疆农业大学草业与环境科学学院,乌鲁木齐830052 [4]新疆昭苏马场草原站,伊犁853000

出　　处：《新疆农业大学学报》2008年第5期64-67,共4页Journal of Xinjiang Agricultural University

基　　金：新疆现代化畜牧业试验与示范项目

摘　　要：分别对昭苏马场的不同草地类型做了土壤养分测定，结果表明：亚高山草甸的土壤有机质含量最高，冲积平原草甸的土壤有机质含量最低；土壤全氮含量表现为中山山地草甸最高，低山丘陵草原最低；而土壤全钾含量正好相反，低山丘陵草原的土壤全钾含量最高，中山山地草甸最低。亚高山草甸草地土壤全磷、速效氮的含量较丰富，其他各草地类型间土壤全磷分布较均匀；山前冲积平原草甸的土壤速效氮含量最低，各草地类型之间土壤速效磷的含量变化也不大，而且速效磷在各层中分布的比较均匀。中山山地草甸的土壤速效钾含量最高，亚高山草甸的最低。各草地类型土壤养分随土层深度增加，有逐渐下降的趋势。土壤有机质、全磷、速效氮含量差异均不显著（P〉0．05），土壤全钾和0～10cm速效钾含量差异极显著（P〈0．01）。The series of soil nutrient of different grassland types were studied in this paper. The result showed that the contents of soil organic matter, total P and alkaline N are the highest in sub- alpine meadow. The content of soil organic matter is the lowest in the alluvial piedmont plain meadow. The content of alkaline N is the lowest in alluvial piedmont plain meadow. The distribution of total P was symmetrical in all rangeland types. The content of total N was the highest in mountain meadow and was the lowest in hilly steppe. The total K content was completely reverse with the total N, hilly steppe is the highest and the mountain meadow is the lowest. The content of alkaline K was the highest in mountainous meadow and was the lowest in sub-alpine meadow. The variation of available P was little in the rangeland types and well-distributed in soil layers. The soil nutrient was gradually decreased with soil depth. Except the contents of organic, total P and the alkaline N,there were significant differences of total K （ P 〉0.01）.

关 键 词：昭苏马场 草地类型 土壤养分 

分 类 号：S158.3[农业科学—土壤学]