不同类型灌丛草地土壤养分的比较  

Soil Nutrients of Different Types of Shrub Grassland

作　　者：陈莹 李龙兴 杨春燕 王普昶 王小利 

机构地区：[1]贵州省草业研究所,贵州贵阳550006 [2]贵州省草地技术试验推广站,贵州贵阳550025

出　　处：《贵州农业科学》2015年第10期139-143,共5页Guizhou Agricultural Sciences

基　　金：国家自然科学基金项目"贵州石漠化功能灌木群繁殖行为与种群自组织更新响应机制"(31260572);贵州省科学技术基金项目"不同类型灌丛草地土壤微生物多样性及其影响机制的研究"[黔科合J字(2012)2198]

摘　　要：为促进喀斯特地区人工植被建设、生态环境恢复及草地畜牧业发展,对5种贵州山地适生灌木草地不同层次（0~10cm,10~20cm,20~30cm）土壤的化学性质进行测定与对比分析,研究不同适生灌木对土壤化学性质的影响。结果表明：多花木兰灌丛草地在0~10cm土层中水解氮和速效钾含量显著高于其他4种灌丛草地（P〈0.05）,盐肤木和多花木兰灌丛草地的有效磷含量显著高于白刺花、胡枝子、猪屎豆灌丛草地（P〈0.05）;盐肤木和多花木兰灌丛草地的全氮和全磷含量相对较高,不同灌丛草地土壤水解氮、有效磷、速效钾和全氮、全磷、全钾含量在土壤垂直剖面上随着土层的加深而逐渐降低;盐肤木和猪屎豆灌丛草地有机质含量和pH值明显高于其他灌丛草地（P〈0.05）。结论：多花木兰灌丛草地群落环境土壤养分的分布优于其他的灌丛草地。In order to promote the construction of artificial vegetation, the restoration of the ecological environment and the development of animal husbandry in karst area of Guizhou, the effects of different suitable shrubs on soil chemical properties were evaluated. It was investigated to the soil chemical properties of five kinds of Guizhou suitable shrubs grasslands at different levels （0~10 cm, 10~20 cm and 20~30 cm）. The results showed that the hydrolysis nitrogen and available potassium content in the 0~10 cm soil layer of Indigofera arnblyatha shrub grassland was significantly higher than that of the other four kinds of shrub grassland（P〈0.05）, the content of available phosphorus in Nutgall Tree and I. arnblyatha shrub grassland was higher than that of Viciifolia, Lespedeza, Crotalaria shrub grassland （P〈0.05）; The total nitrogen and total phosphorus content of Nutgall Tree and I. arnblyatha shrub grassland was relatively high. With the deepening of soil layer, the hydrolysable nitrogen, available phosphorus, available potassium and total nitrogen, total phosphorus, total potassium content of different shrub grassland in soil vertical profile decreased gradually. The soil organic matter content and pH value of Nutgall Tree and Crotalaria shrub grassland was significantly higher than that of other shrub grassland （P〈0.05）. Research and analysis indicated that the distribution of I. amblyatha shrub grassland soil nutrient is better than other shrub grasslands.

关 键 词：贵州山地 灌丛草地 土壤 化学性质 

分 类 号：S153.6[农业科学—土壤学]