广宁红花油茶叶片营养DRIS诊断  

Leaf nutrient diagnosis of Camellia semiserrata seedlings with DRIS

作　　者：丁晓纲[1] 张应中[1] 刘喻娟[1] 陈清凤[1] 

机构地区：[1]广东省林业科学研究院,广东广州510520

出　　处：《经济林研究》2012年第4期148-150,158,共4页Non-wood Forest Research

基　　金：国家林业公益性行业科研专项"优质丰产油茶专用肥研制"(200904058);广东省林业科技创新专项资金项目(2008KJCX007-02;2009KJCX009-03;2010KJCX008-02;2011KJCX014-04);广东省地方标准制(修)订林业项目"广宁红花油茶优良无性系选育技术规程"(2011-DB-02)

摘　　要：为给广宁红花油茶的田间管理和合理施肥提供理论依据,以广宁红花油茶1年生播种苗为研究对象,运用DRIS指数法对其叶片进行营养诊断。结果表明,以6～11月份广宁红花油茶叶片N、P、K元素浓度测定值为依据,采用N和P、K和P、N和K的比值作为诊断指标,广宁红花油茶叶片N和P元素浓度最佳比值为10.21±1.30;N和K元素浓度最佳比值为2.11±0.08;K和P元素浓度最佳比值为5.29±0.64。建立了广宁红花油茶DRIS营养诊断指数表,得出结论:广宁红花油茶对N、K肥的反应要比P肥更为灵敏。In order to provide theoretical basis for field management and rational fertilization in Camellia semiserrata, taking one-year-old C. semiserrata seedlings as research subjects, the nutrients dynamics in the leaves were studied with Diagnosis and Recommendation Integrated System （DRIS） method. Based on N, P and K concentrations in the leaves of C. semiserrata from June to November, using ratios of N and P, K and P, N and K as diagnostic indicators, the optimum concentration ratio of N and P elements in C. semiserrata leaves is 10.21 ± 1.30, that of N and K elements is 2.11±0.08, and that of K and P is 5.29 ±0.64, respectively. DRIS nutrition diagnosis index table of C. semiserrata is established, and response of C. semiserrata on N, K fertilizers is more sensitive than response on P fertilizer.

关 键 词：广宁红花油茶 综合诊断法 叶片营养 

分 类 号：S685[农业科学—观赏园艺]