氮添加对新疆野苹果幼苗枝叶大小的影响

doi:10.13866/j.azr.2022.01.20

干旱区研究 ›› 2022, Vol. 39 ›› Issue (1): 210-219.doi: 10.13866/j.azr.2022.01.20

氮添加对新疆野苹果幼苗枝叶大小的影响

华兆晖^1,²(),陶冶¹,闫景明^1,³,周晓兵¹,张静¹,张元明¹()

1.中国科学院新疆生态与地理研究所,荒漠与绿洲生态国家重点实验室,新疆乌鲁木齐 830011
2.石河子大学生命科学学院,新疆石河子 832003
3.安庆师范大学生命科学学院/皖西南生物多样性研究与生态保护安徽省重点实验室,安徽安庆 246133

收稿日期:2021-05-09 修回日期:2021-07-07 出版日期:2022-01-15 发布日期:2022-01-24
通讯作者: 张元明
作者简介:华兆晖（1999-）,男,硕士研究生,主要从事植物生态学研究. E-mail: hzh302758578@163.com
基金资助:
新疆维吾尔自治区天山创新研究团队项目(2018D14009);第二次青藏高原科学考察研究项目(2019QZKK05020111);新疆维吾尔自治区区域协同创新专项(2019E01016);国家自然科学基金-新疆联合基金项目(U2003214)

Effects of different levels of nitrogen addition on leaf-stem sizes of Malus sieversii seedlings

HUA Zhaohui^1,²(),TAO Ye¹,YAN Jingming^1,³,ZHOU Xiaobing¹,ZHANG Jing¹,ZHANG Yuanming¹()

1. State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, Xinjiang, China
2. College of Life Sciences, Shihezi University, Shihezi 832003, Xinjiang, China
3. Anhui Province Key Laboratory of the Biodiversity Study and Ecology Conservation in Southwest Anhui, College of Life Sciences, Anqing Normal University, Anqing 246133, Anhui, China

Received:2021-05-09 Revised:2021-07-07 Online:2022-01-15 Published:2022-01-24
Contact: Yuanming ZHANG

摘要/Abstract

摘要：

新疆野苹果（Malus sieversii）是全世界栽培苹果的祖先之一,也是我国重要的战略性植物种质资源,但目前其种群退化严重,对新疆野苹果进行保育需要了解其对氮添加的响应。对不同水平氮添加处理的新疆野苹果幼苗小枝的枝叶大小性状进行单因素方差分析以及异速生长分析,以探明新疆野苹果对氮添加处理的响应,为种群恢复提供理论基础。结果表明：（1）中氮处理对小枝茎的伸长有显著促进作用,且显著降低了野苹果叶面积比率以及叶茎质量比;高氮处理显著降低了野苹果的出叶强度。（2）氮添加对新疆野苹果枝叶之间的增速以及分配格局的影响不是体现在生物量上,而是体现在枝叶形态上,枝长-总叶面积和枝长-叶片数量性状对低中氮处理曲线的增速显著性增长。低、中氮处理组更偏向生长更多叶面积较小而轻的叶片,而高氮处理下的变化趋势不同于低、中氮处理。（3）适当添加氮肥可改善枝叶生长状况和枝叶功能性状相互关系,建议在开展野苹果幼苗原生境移植过程中,考虑生境之间的养分差异并进行针对性氮肥添加。

关键词: 新疆野苹果, 氮添加, 枝叶关系, 异速生长关系, 功能性状

Abstract:

Malus sieversii is one of the ancestors of all cultivated apple trees in the world; therefore, it is regarded as a strategic genetic resource in China. However, its population has become seriously degraded. To conserve M. sieversii, it is necessary to understand the response of the plant to nitrogen addition. To determine the response of M. sieversii to nitrogen addition and provide a theoretical basis for population recovery, the twig traits of M. sieversii seedlings treated with different levels of nitrogen were analyzed using one-way ANOVA and allometric analysis. The N20 treatment promoted significant stem growth and significantly reduced the LAR and LAMR of M. sieversii; in contrast, the N40 treatment significantly reduced the LI of M. sieversii. The variation of branches and leaves of M. sieversii under nitrogen addition was not reflected in the biomass, but it was reflected in the morphological index. The low-and medium-nitrogen treatment groups tended to grow smaller and lighter leaves. The variation according to high-nitrogen treatment differed from that of the low-and medium-nitrogen groups. Appropriate addition of nitrogen fertilizer can improve the relationship between leaves and stem growth. In the process of planting seedlings, excessive application of nitrogen fertilizer should be avoided and fertilizer should be added appropriately. In the process of original habitat transplantation, the soil difference between habitats should be considered and fertilizer should be used in a targeted manner.

Key words: Malus sieversii, nitrogen addition, leaf-stem relationship, allometric scaling relationship, functional traits

华兆晖,陶冶,闫景明,周晓兵,张静,张元明. 氮添加对新疆野苹果幼苗枝叶大小的影响[J]. 干旱区研究, 2022, 39(1): 210-219.

HUA Zhaohui,TAO Ye,YAN Jingming,ZHOU Xiaobing,ZHANG Jing,ZHANG Yuanming. Effects of different levels of nitrogen addition on leaf-stem sizes of Malus sieversii seedlings[J]. Arid Zone Research, 2022, 39(1): 210-219.

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	L	BD	SM	TLM	LN	SLM	TLA	LA	SLA	LI	LAR
BD	0.574^**
SM	0.818^**	0.747^**
TLM	0.639^**	0.653^**	0.841^**
LN	0.673^**	0.198^*	0.564^**	0.461^**
SLM	0.261^**	0.589^**	0.578^**	0.784^**	-0.101
TLA	0.694^**	0.624^**	0.846^**	0.972^**	0.537^**	0.725^**
LA	0.265^**	0.557^**	0.543^**	0.726^**	-0.121	0.963^**	0.725^**
SLA	-0.026	-0.294^**	-0.244^*	-0.392^**	0.089	-0.475^**	-0.193^*	-0.247^**
LI	-0.318^**	-0.656^**	-0.584^**	-0.688^**	0.145	-0.893^**	-0.637^**	-0.866^**	0.460^**
LAR	-0.522^**	-0.360^**	-0.459^**	-0.074	-0.278^**	0.100	-0.040	0.182	0.156	0.042
LAMR	-0.498^**	-0.247^**	-0.366^**	0.083	-0.295^**	0.277^**	0.043	0.273^**	-0.195^*	-0.125	0.933^**

X	Y		异速生长指数和截距						等速生长检验
X	Y	处理	R²	P	Slope(α)	SD	Intercept (logβ)	SD	F	P
SM	TLM	CK	0.878	0.000	0.864a	0.008	0.242a	0.001	2.611	0.127
		N10	0.675	0.000	0.996a	0.014	0.244a	0.001	0.001	0.976
		N20	0.705	0.000	1.065a	0.025	0.193a	0.001	0.257	0.618
		N40	0.606	0.000	0.848a	0.009	0.261a	0.001	2.635	0.113
L	TLA	CK	0.648	0.000	1.162b	0.048	2.572	0.050	0.972	0.340
		N10	0.400	0.000	1.948a	0.107	1.464	0.142	24.870	0.000
		N20	0.511	0.000	2.001a	0.153	1.251	0.210	21.901	0.000
		N40	0.378	0.000	0.909b	0.018	2.873	0.024	0.541	0.467
L	LN	CK	0.651	0.000	1.002ab	0.036	-0.041	0.037	0.000	0.988
		N10	0.390	0.000	0.939ab	0.025	-0.020	0.034	0.190	0.666
		N20	0.542	0.000	1.287a	0.059	-0.530	0.081	2.693	0.117
		N40	0.443	0.000	0.686b	0.009	0.285	0.012	10.171	0.003
BD	LA	CK	0.441	0.004	1.637a	0.163	1.917a	0.024	7.069	0.018
		N10	0.239	0.005	2.185a	0.176	1.789b	0.036	28.409	0.000
		N20	0.415	0.002	2.094a	0.206	1.818b	0.035	21.219	0.000
		N40	0.282	0.000	1.902a	0.093	1.916a	0.018	24.430	0.000
BD	LI	CK	0.564	0.001	-1.810a	0.073	1.859bc	0.023	13.601	0.002
		N10	0.413	0.000	-2.189a	0.075	1.966a	0.028	37.028	0.000
		N20	0.478	0.001	-2.010a	0.084	1.915ab	0.029	20.822	0.000
		N40	0.541	0.000	-2.131a	0.046	1.835c	0.014	55.652	0.000
BD	SLM	CK	0.584	0.000	1.906a	0.158	-2.079ab	0.025	17.188	0.001
		N10	0.254	0.004	2.417a	0.211	-2.226c	0.044	39.014	0.000
		N20	0.352	0.005	2.222a	0.259	-2.193b	0.043	23.022	0.000
		N40	0.323	0.000	2.188a	0.116	-2.081a	0.022	40.947	0.000

氮添加对新疆野苹果幼苗枝叶大小的影响

Effects of different levels of nitrogen addition on leaf-stem sizes of Malus sieversii seedlings

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