彩色针叶树N、P、K施肥比例初探  

Preliminary Study of the N,P,K Fertilization Ratio of Juniperus communis 'Gold Cone'

作　　者：陶霞娟[1] 孙敬爽[1] 余海[1] 孙长忠[1] 

机构地区：[1]中国林业科学研究院华北林业实验中心,北京102300

出　　处：《安徽农业科学》2012年第23期11721-11722,共2页Journal of Anhui Agricultural Sciences

基　　金：国家林业局948项目(2008-4-19)

摘　　要：[目的]探讨不同N、P、K施肥比例对彩色针叶树生长和干物质积累的影响。[方法]以从美国引进的‘金叶疏枝’欧洲刺柏为供试品种,栽培在珍珠岩+蛭石(3∶7)的基质中,采取喷施营养液的方式,以清水为对照(CK),研究不同N、P、K施肥比例对‘金叶疏枝’欧洲刺柏株高、冠幅、地径、高径比、单株干重、地上部分干重、地下部分干重和根冠比的影响。[结果]与对照CK相比,各处理都能够提高株高、地径、冠幅、高径比、单株干重、地上部分干重、地下部分干重及根冠比,但各处理影响程度有差异,处理⑤在0.05水平上显著促进‘金叶疏枝’欧洲刺柏的株高、冠幅、单株干重、地上部分干重和地下部分干重。[结论]合理的N、P、K施肥比例可促进‘金叶疏枝’欧洲刺柏的生长和干物质的积累。[Objective] To study the effects of N,P and K fertilization ratio on the growth and dry matter accumulation of Juniperus communis ＇Gold Cone＇.[Method] Juniperus communis ＇Gold Cone＇ was used as tested materials and planted in soilless medium with 3：7 of perlite and vermiculite,and eight treatments including different N∶P∶K fertilizer were used with water as comparison（CK）,and then the effects of average plant height,average plant crown,average rhizome diameter,average height/stem diameter,average dry weight of whole plant,average dry weights of above-ground,average dry weights of root and average root cap rate of Juniperus communis ＇Gold Cone＇ were analyzed.[Result] In comparison with CK,all the treatments enhanced average plant height,average plant crown,average rhizome diameter,average dry weight of whole plant,average dry weights of above-ground,average dry weights of root and average root cap rate of Juniperus communis ＇Gold Cone＇.In particular,the average plant height,average plant crown,average dry weight of whole plant,average dry weights of above-ground and average dry weights of root of the fifth treatment were significantly promoted at the 0.05 level.[Conclusion] Rational N∶P∶K fertilizer can promote growth and accumulation of dry matter in Juniperus communis ＇Gold Cone＇.

关 键 词：彩色针叶树 施肥比例 生长 干物质 

分 类 号：S686[农业科学—观赏园艺]