作　　者： (袁颖丹）; (郭晓敏）; (陈煦）; (程晓）; (赵自稳）; (牛德奎）; (张金池）; (潜伟平）; (彭辉武）; (张文元）;

机构地区： 江西农业大学林学院,江西南昌330045 南京林业大学南方现代林业协同创新中心,江苏省水土保持与生态修复重点实验室,江苏南京210037 江西省森林培育重点实验室,江西南昌330045 江西特色林木资源培育与利用2011协同创新中心,江西南昌330045

出　　处： 《中南林业科技大学学报》 2017年第7期118-122,共5页

摘　　要： 以江西省武功山山地草甸为研究对象,取不同海拔高度不同土层的土壤,对武功山山地草甸土壤机械组成与养分之间的关系进行研究。结果表明:武功山山地草甸整体粒径组成为:粗砂粒>细砂粒>粗粉粒>粘粒>细粉粒>中粉粒。武功山山地草甸土壤的有机质含量、全氮和碱解氮含量均处于一级以上水平,土壤有效磷含量处于三级水平,土壤速效钾处于四级水平。在有机质含量中,上层土壤有机质与粗砂粒呈显著负相关性,与细砂粒呈显著正相关性,下层土壤有机质与中粉粒、细粉粒和物理性粘粒均呈极显著负相关性,与粘粒呈显著负相关性。下层土壤pH值与粘粒呈极显著正相关性;下层土壤的全氮含量与物理性粘粒呈显著正相关性;上层土壤有效磷含量与粘粒呈显著正相关性,其余各指标间均无显著相关性。从整体来看,武功山的山地草甸土壤养分含量较高,肥力丰富,说明土壤有能力提供给植物生长所需的养分。 The meadow of Wugong Mountain in Jiangxi Province as the research object, take different soil layers at different altitudes, studied the relationship between the mechanical composition of the soil and the nutrients in the meadow of Wugong mountain. The results show that the whole soil composition of the mountain meadow is coarse sand 〉 fine sand 〉 coarse silt 〉 clay 〉 fine slit 〉 medium silt. The content of organic matter, total nitrogen and available nitrogen in the soil of Wugong mountain meadow were all at first level, the available phosphorus content of the soil was at third level, and the available potassium in the soil was at fourth level. In the content of organic matter, soil organic matter and coarse sand showed a significant negative correlation, a significant positive correlation with fine sand, the lower soil organic matter and medium silt, fine silt and clay showed significant negative correlation, a significant negative correlation with clay. The lower soil pH value had significant positive correlation with clay; lower soil total nitrogen content and physical clay showed a significant positive correlation; the upper soil available phosphorus was significantly positively correlated with clay content, there was no significant correlation between other indexes. On the whole, the soil nutrient content in the mountain meadow of Wugong Mountain is higher, and the soil fertility is abundant, which shows that the soil has the ability to provide the necessary nutrients for plant growth.

关 键 词： 山地草甸 机械组成 养分 相关性