干旱胁迫对实生红橘、甜橙和柚叶中营养元素含量的影响  

Effect of drought stress on mineral nutrient contents in leaves of sdeedling plant of C.tangerina Hort.,C.sinensis Osbeck and C.grandis Osbeck

作　　者：马文涛[1] 樊卫国[1] 

机构地区：[1]贵州大学喀斯特山地果树资源研究所,贵州贵阳550025

出　　处：《西南农业学报》2007年第4期630-633,共4页Southwest China Journal of Agricultural Sciences

基　　金：国家科技攻关计划"西部开发"重大项目(2005BA901A04);贵州省"十.五"重大科技攻关项目(黔科合2003JGZ001);贵州省"十一五"重大科技专项项目(黔科合ZN字2005-3001);贵州省优秀青年科技人才基金项目(黔科合人字2003-0318)

摘　　要：以红橘(Citrus tangerinaHort.)、甜橙(Citrus sinensisOsbeck)、柚(Citrus grandisOsbeck)实生苗为材料,采用模拟降雨控水长期干旱胁迫的方法,研究了降水量400和800 mm的干旱胁迫对3种柑橘实生苗叶片的N、P、K、Ca、Mg、Fe、Zn、Cu、Mn、B元素含量的影响。结果表明:干旱胁迫降低了实生甜橙、红橘和柚的叶片中N、P、K、Ca、Mg、Fe、Cu、B元素的含量,增加了叶中Mn元素的含量;实生红橘和柚叶中的Zn含量在降水量400 mm的干旱胁迫下显著降低,而同样的干旱胁迫条件下,实生甜橙叶中的Zn含量极显著地增加了。干旱胁迫降低实生甜橙和红橘叶中N、Ca、Mg、Fe、Cu、B元素含量的作用相对较大。By long-period drought stress using stimulated rainfalls to control water amount , the seedlings of Citrus rangerine Hurt. , Citrus sinensis Osbeck and Citrus grandis Osbeck were studied,and drought stress on different rainfalls （400mm and 800mm ） influence on elements content （ N, P, K, Ca, Mg, Fe, Zn, Cu, Mn, B ） of the three seedlings leaves. The study showed that contents of N, P, K, Ca, Mg, Fe, Zn, Cu,B were decreased ,but the content of Mn increased ;the content of Zn in the leaves of Citrus tangedna Hort. and Citrus grandis Osbeck were decreased significantly under drought stress of precipitation 400 nun ,while the content of Zn in the leaves of Citrus sinensis Osbeck increased significantly. In a word ,the influence of drought stress on contents of N ,Ca,Mg,Fe,Cu and B are more remarkable to Citrus tangedna Hort. and Citrus sinensis Osbeck.

关 键 词：柑橘 干旱胁迫 矿质营养元素 

分 类 号：S666.9[农业科学—果树学]