干旱区生态环境知识资源中心(Arid): 极端干旱区骆驼刺对水氮条件变化的生长响应

Arid

	极端干旱区骆驼刺对水氮条件变化的生长响应
其他题名	Growth Responses of Alhagi sparsifolia under Different Water and Nitrogen Supply Levels in Extremely Arid Region
	黄彩变 1; 曾凡江1 ; 雷加强2
来源期刊	草地学报
ISSN	1007-0435
出版年	2016
卷号	24 期号:3 页码:581-589
中文摘要	采用盆栽试验,研究了不同水氮处理下骆驼刺(Alhagi sparsifolia)的形态特征、生物量累积和分配特征,并探讨了适合骆驼刺生长的最佳水氮条件。经过2年的水氮处理发现,水分和氮素处理对骆驼刺的株高、冠幅、基茎、地上和地下生物量累积均有显著影响,对生物量分配还存在着明显的交互作用,但在不同生长年份影响也不同。在第1个生长年份,综合评价结果为干旱低氮(田间持水量30%~35%,施氮51 mg N·kg~(-1))处理下生长表现最好,主要表现在株高、基茎、根系生物量和根冠比均有明显增加。在第2个生长年份,则为中水中氮处理(田间持水量60%~65%,施氮102mg N·kg~(-1))下综合生长表现最好,主要表现在地上、地下生物量和根冠比均有显著增加。因此,在骆驼刺幼苗生长早期应推荐干旱低氮处理,随株龄增加则为中水中氮处理更合适。
英文摘要	The potting experiment was conducted to study the changes of morphological characteristics,biomass accumulation and allocation of 1-and 2-year-old Alhagi sparsifolia under different water and nitrogen(N)treatments,and to further find out the suitable combination of water and N for the plant growth. The results showed that plant height,canopy,base diameter,shoot and root biomass were significantly affected by water and N supply.The combination of water and N had a significant influence on the biomass allocation of different organs for both growth stages,but the effects differed with growth age.For 1-yearold A.sparsifolia,the highest comprehensive evaluation value of plant growth was found under drought(30%~35%field water capacity(FC))and low N(51 mg N ·kg~(-1))treatment,under which there were significantly higher plant height,base diameter,root biomass and root:shoot ratio compared to the control treatment(drought and no N).For 2-year-old A.sparsifolia,shoot and root biomass and root:shoot ratio were highest under middle water and N treatment(60%~65%FC and 102mg N ·kg~(-1))compared to other treatments.Correspondingly,the highest comprehensive evaluation value of plant growth was found under this treatment.This suggests that drought and low N treatment was suitable for A.sparsifoliaseedlings in the first year,but middle water and N treatment became more appropriate in the second year.
中文关键词	骆驼刺 ; 生物量 ; 形态特征 ; 水分处理 ; 氮素处理
英文关键词	Alhagi sparsifolia Biomass Morphological characteristics Water treatment Nitrogen treatment
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:5827701
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233954
作者单位	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;;新疆策勒荒漠草地生态系统国家野外科学观测研究站;;中国科学院干旱区生物地理与生物资源重点实验室, 乌鲁木齐, 新疆 830011, 中国; 2.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;;新疆策勒荒漠草地生态系统国家野外科学观测研究站, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	黄彩变,曾凡江,雷加强. 极端干旱区骆驼刺对水氮条件变化的生长响应[J]. 中国科学院新疆生态与地理研究所,2016,24(3):581-589.
APA	黄彩变,曾凡江,&雷加强.(2016).极端干旱区骆驼刺对水氮条件变化的生长响应.草地学报,24(3),581-589.
MLA	黄彩变,et al."极端干旱区骆驼刺对水氮条件变化的生长响应".草地学报 24.3(2016):581-589.