摘要
为给油茶平衡配方施肥提供理论依据,以长林4号5年生油茶树为试材,就其树体对微量元素锰的年吸收和积累规律进行了观测与分析。结果表明:油茶各个器官中锰元素的含量不同,叶片中锰元素的含量最高,其次为树皮,枝干和根系的锰含量相当;油茶植株在其整个发育期对锰的积累总量为8.42 g,其中休眠期(1月)至抽梢期(4月)每株的积累量为2.11 g,抽梢期(4月)至果实发育期(7月),这一时期是油茶吸收积累锰的活跃时期,此期内每株油茶植株对锰元素的积累量为6.31 g,达到了全年吸收积累总量的75%,其中0.28 g的锰元素被积累到根系中,其余锰元素被运输至其地上部分;而7～10月油茶植株对锰的积累量几乎为0,此期内枝干中的锰元素向果实中转运,以满足果实生长发育的需要。
In order to provide theoretical basis for scientific formulation fertilizer in Camellia oleifera L., taking five- year-old Changlin No.5 as material, annual changes of Mn absorption and accumulation were observed and analyzed. The results showed that the contents of Mn were different in different organs. The content of Mn was the highest in leaf, secondly in bark, and the lowest in stem and root. The annual accumulation of Mn was 8.42 g per tree. The accumulation of Mn was 2.11 g per tree from dormancy period in January to shooting period in April. The active absorption and accumulation period of Mn elements was from shooting period to fruit development period in July, during which about 75% Mn of annual uptake was accumulated and the absorption amount was 6.31 g per tree, in which about 0.28 g Mn was utilized by roots and the others were transferred to the parts above ground. Mn was rarely accumulated from July to October, during which Mn in stems was transferred to fruits to promote development and ripening of fruits.
出处
《经济林研究》
北大核心
2012年第1期19-22,39,共5页
Non-wood Forest Research
基金
浙江省省院合作林业科技项目"江山林改科技支撑技术集成与示范"(2010SY01)
"十一五"国家科技支撑项目"油茶可持续丰产栽培关键技术研究"(2009BADB1B02)
林业公益性行业科研专项"林改后南方林地可持续高效经营关键技术研究与集成示范"(201004008)
关键词
油茶
锰
吸收
积累量
Camellia oleifera L.
Mn
absorption
accumulation
