干旱区生态环境知识资源中心(Arid): Nutrient coordination mechanism of tiger nut induced by rhizosphere soil nutrient variation in an arid area, China

Arid

DOI	10.1007/s40333-023-0029-0
	Nutrient coordination mechanism of tiger nut induced by rhizosphere soil nutrient variation in an arid area, China
	Tan, Jin; Wu, Xiuqin; Li, Yaning; Shi, Jieyu; Li, Xu
通讯作者	Wu, XQ
来源期刊	JOURNAL OF ARID LAND
ISSN	1674-6767
EISSN	2194-7783
出版年	2023
卷号	15 期号:10 页码:1216-1230
英文摘要	Tiger nut is a bioenergy crop planted in arid areas of northern China to supply oil and adjust the planting structure. However, in the western region of Inner Mongolia Autonomous Region, China, less water resources have resulted in a scarcity of available farmland, which has posed a huge obstacle to planting tiger nut. Cultivation of tiger nut on marginal land can effectively solve this problem. To fully unlock the production potential of tiger nut on marginal land, it is crucial for managers to have comprehensive information on the adaptive mechanism and nutrient requirement of tiger nut in different growth periods. This study aims to explore these key information from the perspective of nutrient coordination strategy of tiger nut in different growth periods and their relationship with rhizosphere soil nutrients. Three fertilization treatments including no fertilization (N:P (nitrogen:phosphorous)=0:0), traditional fertilization (N:P=15:15), and additional N fertilizer (N:P=60:15)) were implemented on marginal land in the Dengkou County. Plant and soil samples were collected in three growth periods, including stolon tillering period, tuber expanding period, and tuber mature period. Under no fertilization, there was a significant correlation between N and P contents of tiger nut roots and tubers and the same nutrients in the rhizosphere soil (P<0.05). Carbon (C), N, and P contents of roots were significantly higher than those of leaves (P<0.05), and the C:N ratio of all organs was higher than those under other treatments before tuber maturity (P<0.05). Under traditional fertilization, there was a significant impact on the P content of tiger nut tubers (P<0.05). Under additional N fertilizer, the accumulation rate of N and P was faster in stolons than in tubers (P<0.05) with lower N:P ratio in stolons during the tuber expansion period (P<0.05), but higher N:P ratio in tubers (P<0.05). The limited availability of nutrients in the rhizosphere soil prompts tiger nut to increase the C:N ratio, improving N utilization efficiency, and maintaining N:P ratio in tubers. Elevated N levels in the rhizosphere soil decrease the C:N ratio of tiger nut organs and N:P ratio in stolons, promoting rapid stolon growth and shoot production. Supplementary P is necessary during tuber expansion, while a higher proportion of N in fertilizers is crucial for the aboveground biomass production of tiger nut.
英文关键词	tiger nut stoichiometry rhizosphere soil nitrogen addition marginal land
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:001086567000005
WOS关键词	CYPERUS-ESCULENTUS ; NITROGEN ; STOICHIOMETRY ; AVAILABILITY ; PHOSPHORUS ; GROWTH ; MAIZE ; YIELD
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397192
推荐引用方式 GB/T 7714	Tan, Jin,Wu, Xiuqin,Li, Yaning,et al. Nutrient coordination mechanism of tiger nut induced by rhizosphere soil nutrient variation in an arid area, China[J],2023,15(10):1216-1230.
APA	Tan, Jin,Wu, Xiuqin,Li, Yaning,Shi, Jieyu,&Li, Xu.(2023).Nutrient coordination mechanism of tiger nut induced by rhizosphere soil nutrient variation in an arid area, China.JOURNAL OF ARID LAND,15(10),1216-1230.
MLA	Tan, Jin,et al."Nutrient coordination mechanism of tiger nut induced by rhizosphere soil nutrient variation in an arid area, China".JOURNAL OF ARID LAND 15.10(2023):1216-1230.