锰毒害对苹果树势及树体锰分布的影响  

Effects of Manganese Toxicity on Tree Vitality of Apple and Distribution of Manganese in Tree

作　　者：于忠范 姜学玲 张广和 徐维华 慕荣彬 

机构地区：[1]山东省烟台市农科院土肥所,265500 [2]栖霞市果树中心

出　　处：《北方果树》2000年第6期7-9,共3页Northern Fruits

摘　　要：采用盆栽试验,每盆装土15kg,分别加入硫酸锰0(CK)、25、50、75g,株平均新梢总长为140．9cm、155．7cm、128．8cm、93．1cm,锰处理疱疹发生株率均为100%,新梢顶端死亡率分别为23．8%、100%、100%,主枝回枯率为0、52．6%、74．4%,主干死亡株率为0、22．9%、62．5%；田间调查：重病树新生根干重为轻病树的31．1%,达5%显著水平；树体锰按叶片含量多少排列,其顺序为：重病树＞轻病树,中部＞外围＞内膛,基部＞中部＞顶部；而根系锰含量则相反,重病树＜轻病树.：In a pot experiment，0，25，50 and 70g Manganese were mixed with 15kg soil，respectively．The shoot lengths of test tree were 140．9，155．7，128．8and 93．1cm，respectively．Occurrence rate of stem blister in pot with manganese were 100%．Shoot dieback rates were 23．8%，100%and 100%．Main branch dieback rates were 0，52．6%and 74．4%．Stem death rates were 0，22．9%and 62．5%．Field investigation showed that DW of seriously－diseased trees were only 31．1% of that of lightly－diseased trees，the difference was significant （P＞0．05）．Manganese content in leaf were as follows in order of amount from large to small：Seriously－diseased ＞lightly－diseased，part between interior and outrior＞interior＞outrior，base＞middle part ＞top．The root manganese content was on the contrary， seriously－diseased＜lightly－deseased．

关 键 词：苹果 锰毒害 树势 锰分布 粗皮病 

分 类 号：S436.61[农业科学—农业昆虫与害虫防治]