森林工程2024，Vol.40Issue(4)：29-38,10.DOI:10.7525/j.issn.1006-8023.2024.04.004
氮、磷、钾肥对紫穗槐幼苗根叶化学计量特性的影响
Effects of Nitrogen,Phosphorus and Potassium Fertilization on Stoichiometric Characteristics of Root and Leaf of Amorpha fruticosa L.
摘要
Abstract
In order to explore the adaptability of the roots and leaves of Amorpha fruticosa L.stoichiometric characteristics to nu-trients,and to provide a basis for the study of fertilization and restrict modes of leguminous plants.We used fertilization treatment with three factors(nitrogen(N),phosphorus(P),potassium(K)),and three fertilization levels(N1,N2,N3,P1,P2,P3,K1,K2,K3)to measure the carbon(C),N,P,K content of the roots and leaves of Amorpha fruticosa L.seedlings,and analyze the relation-ship between elements in the roots and leaves.Our results showed that the leaves had a stronger response than roots under P,K addi-tion,and roots had a stronger response to N addition.Leaf and root N contents,root N/K and root N/P were increased significantly with increasing N addition level,root P/K,leaf P/K and root C/N decreased significantly.Leaf N,P and K content,root P content,root N/K and root P/K increased significantly,leaf N/K and leaf N/P decreased significantly with increasing P application;root and leaf K content increased significantly and root N/K,root P/K,leaf N/K and leaf P/K decreased significantly with the increasing of K ap-plication.Leaf C content,root P content,leaf K content and root K content were highly significantly positively correlated,while the relationship between leaf C,N contents and root C,N contents was not significant,while leaf and root N,P,and K contents were sig-nificantly negatively correlated with their corresponding C/N,N/P and N/K,respectively.The relationship between the ratio of carbon to nitrogen in leaf and root was insignificant,while the ratio of nitrogen to phosphorus,nitrogen to potassium and phosphorus to potas-sium in leaf were significantly correlated.The results of membership function analysis showed that in the accumulation of C,N,P and K contents of Amorpha fruticosa L.,N2 was the best treatment.N addition resulted in P limitations to leaves and roots;P addition re-sulted N limitations to leaves and roots;K addition did not changed the limitation patterns.These results can provide a good basis for rational fertilization and scientific management of Amorpha fruticosa L..关键词
施肥/氮磷钾肥/紫穗槐/化学计量比/养分分配Key words
Fertilization/nitrogen.phosphorus and potassium fertilizer/Amorpha fruticosa L./stoichiometric ratio/nutrient distribution分类
农业科技引用本文复制引用
许丽颖,魏统超,王佳音,黄明卉,彭薇,申澜懿,刘冰阳,刘斗南..氮、磷、钾肥对紫穗槐幼苗根叶化学计量特性的影响[J].森林工程,2024,40(4):29-38,10.基金项目
牡丹江师范学院博士启动基金项目(MNUB202107) （MNUB202107）
黑龙江省教育厅项目(1453ZD023 （）
1452TD010 （）
1354MSYQN003). （）
