干旱区生态环境知识资源中心(Arid): Nitrogen application improved peanut yield and nitrogen use efficiency by optimizing root morphology and distribution under drought stress

Arid

DOI	10.4067/S0718-58392022000200256
	Nitrogen application improved peanut yield and nitrogen use efficiency by optimizing root morphology and distribution under drought stress
	Ding, Hong; Zhang, Zhimeng; Zhang, Guanchu; Xu, Yang; Guo, Qing; Qin, Feifei; Dai, Liangxiang
通讯作者	Dai, LX
来源期刊	CHILEAN JOURNAL OF AGRICULTURAL RESEARCH
ISSN	0718-5839
出版年	2022
卷号	82 期号:2 页码:256-265
英文摘要	Drought stress and nutrient deficiency are two main factors that restrict the growth and yield of peanut (Arachis hypogaea L.) in arid and semi-arid regions. However, the effects of N fertilizer on root growth and pod yield of peanut under different water conditions are unclear. The growth, root morphology, and pod yield of peanut were studied under different water and N combinations. Two soil water treatments were tested: Well-watered (WW, 80%-85% field capacity) and drought stress conditions (DS, 55%-60% field capacity). Three N treatments were tested: no N application (NN), moderate N (MN, 90 kg ha(-1)), and high N (HN, 180 kg ha(-1)). Results showed that pod yield of peanut was limited by drought and N deficiency. Compared with NN, peanut shoot DM and pod yield were improved by MN under DS, with an average increase range of pod yield of 16.2% in the 2 yr. The annual average root length density (RLD) in the deeper soil layer (40-100 cm) was 5.5% higher under DS-MN than DS-NN treatment. The N use efficiency (NUE) was 12.3% higher wider WW than DS treatment, and the NUE of MN was significantly higher than that of HN under different water treatments. Root lengths in 40-60 and 60-80 cm soil layers were also positively correlated with pod yield (r = 0.66 and 0.47, respectively) and NUE (r = 0.60* and 0.85**, respectively). In this study, root growth in deeper soil was improved by MN application under DS, thus increasing yield and NUE of DS conditions.
英文关键词	Drought stress nitrogen use efficiency peanut root architecture water-nitrogen interaction
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000796465700001
WOS关键词	DISTRIBUTION PATTERNS ; MAIZE ; WATER ; GENOTYPES ; TOLERANCE ; TRAITS ; DISCRIMINATION ; ARCHITECTURE ; PLASTICITY ; CULTIVARS
WOS类目	Agriculture, Multidisciplinary ; Agronomy
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392141
推荐引用方式 GB/T 7714	Ding, Hong,Zhang, Zhimeng,Zhang, Guanchu,et al. Nitrogen application improved peanut yield and nitrogen use efficiency by optimizing root morphology and distribution under drought stress[J],2022,82(2):256-265.
APA	Ding, Hong.,Zhang, Zhimeng.,Zhang, Guanchu.,Xu, Yang.,Guo, Qing.,...&Dai, Liangxiang.(2022).Nitrogen application improved peanut yield and nitrogen use efficiency by optimizing root morphology and distribution under drought stress.CHILEAN JOURNAL OF AGRICULTURAL RESEARCH,82(2),256-265.
MLA	Ding, Hong,et al."Nitrogen application improved peanut yield and nitrogen use efficiency by optimizing root morphology and distribution under drought stress".CHILEAN JOURNAL OF AGRICULTURAL RESEARCH 82.2(2022):256-265.