不同配比桉树专用肥对桉树生长及元素吸收的影响  

Effects of Different Ratios of Special Fertilizer on Eucalyptus robusta Growth and Absorption of Major Elements

作　　者：刘奎[1] 陆海燕 赵毅辉[1] 杨梅[1] Liu Kui;Lu Haiyan;Zhao Yihui;Yang Mei(College of Forest,Guangxi University,Nanning 530004,China;Liangfengjiang National Forest Park Awarded Nanning,Nanning 530000,China)

机构地区：[1]广西大学林学院,广西南宁530004 [2]南宁良凤江国家森林公园,广西南宁530000

出　　处：《北华大学学报（自然科学版）》2018年第3期389-394,共6页Journal of Beihua University（Natural Science）

基　　金：国家自然科学基金项目(31260176);广西自然科学基金项目(2015GXNSFAA139081)

摘　　要：通过外源施加两种目前常用的桉树专用肥A(m(N)∶m(P)∶m(K)=15∶9∶11),B(m(N)∶m(P)∶m(K)=17.6∶7.2∶10.3)以及不施肥作对照,研究巨尾桉DH32-29组培苗植株各部分大量元素的变化.结果表明:1)A肥料能够较好地促进桉树苗高、地径生长;2)A,B两种肥料显著提高桉树各器官对N,P,K的吸收;B肥料对根叶的N、根的P吸收的影响高于A肥料,但是A,B肥料对各器官中K含量的影响差异不显著;3)A,B处理下桉树叶及A处理下桉树根的N,P养分吸收未受限制,而对照和B处理下的桉树根对P的吸收受到限制;4)A肥料对桉树Ca的吸收效果显著,肥料N,P,K配比对桉树Mg的吸收影响不大.This study was set fertilizer A（ m（ N） ∶ m（ P） ∶ m（ K） = 15 ∶ 9 ∶ 11）,fertilizer B（ m（ N） ∶ m（ P） ∶ m（ K） = 17. 6 ∶ 7. 2 ∶ 10. 3）,no fertilization（ control）,the changes of elements in each part of Eucalyptus robusta（ DH32-29） was discussed. The results showed： 1） Fertilizer A positively promoted the growth of Eucalyptus robusta. 2） Fertilizers A and B significantly increased the absorption of N,P and K in different organs of Eucalyptus robusta. Fertilizer B had higher effect on N absorption in root and leaves,P absorption in leaves than fertilizer A,but there was no significant difference in K among fertilizer A and B. 3） The absorption of N and P in Eucalyptus roots under the treatment of Eucalyptus robusta leaves and A treated with A and B was not limited,while the P absorption of Eucalyptus robusta roots under the control and B treatment was limited. 4） The effect was significant at fertilizer A on the Ca absorption of Eucalyptus robusta. But the effect of fertilizer N,P,K ratio on the Mg absorption of Eucalyptus robusta was not significant.

关 键 词：配比施肥 桉树 养分 大量元素 化学计量 

分 类 号：S725.5[农业科学—林木遗传育种]