江西油茶林地土壤养分限制因子分析  

Analysis on limiting factors of soil nutrient of Camellia oleifera forest in Jiangxi

作　　者：胡冬南[1] 刘亮英[1] 张文元[1] 万晓敏[2] 郭晓敏[1] 

机构地区：[1]江西农业大学园林与艺术学院,江西南昌330045 [2]西南林业大学,云南昆明650224

出　　处：《经济林研究》2013年第1期1-6,共6页Non-wood Forest Research

基　　金：国家"十二五"科技支撑项目(2012BAD14B14);国际植物营养研究所(IPNI)项目(Jiangxi-29)

摘　　要：为了解江西省油茶林地土壤养分状况,采用土壤养分状况系统研究法对江西省油茶林土壤养分限制因子进行了研究。研究结果表明,江西省各地区油茶林地土壤中N、P、K、Mg、B、Zn的含量均低于临界值,其次是Ca、Cu,而S、Fe、Mn的含量普遍较为丰富。各地区油茶林土壤对B、S、P、K的吸附固定能力均较强,而对Cu、Mn、Zn的吸附固定能力较弱。不同地区对各种元素的固定能力有较大差异,赣南地区的吸附固定能力最强。P、N、K、Ca、Mg为江西红壤油茶林土壤主要养分限制因子,而B、Zn、Cu为次要限制因子或潜在性限制因子。江西省油茶林养分管理中在施用P、K肥的同时,不能忽视对微量元素平衡施用。In order to find out soil nutrient status of Camellia oleifera forest in Jiangxi, the nutrient limiting factors were studied by adopting the system diagnosis method of soil nutrient status. The results show that the contents of N, P, K, Mg, B and Zn in C. oleifera forest soil at different regions of Jiangxi Province are below the critical value, and the contents of Ca and Cu are at the second position. The contents of S, Fe, Mn are abundant generally. The soils of C. oleifera forest at all of the regions have stronger capacity of adsorpting and fixing B, S, P and K, but weaker capacity of adsorpting and fixing Cu, Mn and Zn. The fixation capacities of soils at different regions are significantly different, it is the strongest in Southern Jiangxi. P, N, K, Ca and Mg are the primary limiting factors, and B, Zn and Cu are the second or potential limiting factors. The microelements should be evenly used when P and K fertilizers are applicated in C. oleifera forest of Jiangxi.

关 键 词：油茶 土壤养分 限制因子 

分 类 号：S606[农业科学—园艺学] S794.4