氮、磷、钾肥对紫穗槐幼苗根叶化学计量特性的影响OA北大核心CSTPCD
Effects of Nitrogen,Phosphorus and Potassium Fertilization on Stoichiometric Characteristics of Root and Leaf of Amorpha fruticosa L.
探讨紫穗槐根和叶化学计量特性对养分的适应性,为豆科植物施肥和限制模式的研究提供依据,采用三因素(氮(N)、磷(P)、钾(K)),三水平(N1,N2,N3,P1,P2,P3,K1,K2,K3)的施肥处理,测定紫穗槐幼苗根和叶的碳(C)、氮、磷、钾含量,分析根和叶各元素之间的关系.结果表明,在P、K添加下,叶片比根系有更强的响应,根系对N添加有更强的反应.叶片和根N含量、根N/K和N/P随施氮水平的增加而显著增加,根P/K、叶P/K和根C/N显著降低.随着施磷量的增加,叶片N、P、K含量、根P含量、根N/K和P/K显著增加,叶N/K和叶N/P显著降低;根和叶K含量随施钾量的增加而显著增加,根N/K和P/K、叶N/K和P/K显著降低.叶P含量与根P含量、叶K含量与根K含量呈显著正相关,叶C、N含量与根C、N含量之间的关系不显著,而叶根N、P、K含量分别与相应的C/N、N/P和N/K呈显著负相关.叶和根的C/N之间的关系不显著,而叶的N/P、N/K和P/K之间的相关性显著.隶属函数分析结果表明,在紫穗槐C、N、P、K含量的累积方面,N2处理最佳.N的添加导致P对叶片和根的限制;P的添加导致N对叶片和根系的限制;K的添加并没有改变限制模式.研究结果可为紫穗槐的合理施肥和科学管理提供依据.
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..
许丽颖;魏统超;王佳音;黄明卉;彭薇;申澜懿;刘冰阳;刘斗南
牡丹江师范学院 生命科学与技术学院,黑龙江 牡丹江 157011牡丹江师范学院 化学化工学院,黑龙江 牡丹江 157011
林学
施肥氮磷钾肥紫穗槐化学计量比养分分配
Fertilizationnitrogen.phosphorus and potassium fertilizerAmorpha fruticosa L.stoichiometric rationutrient distribution
《森林工程》 2024 (004)
29-38 / 10
牡丹江师范学院博士启动基金项目(MNUB202107);黑龙江省教育厅项目(1453ZD023;1452TD010;1354MSYQN003).
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