干旱区生态环境知识资源中心(Arid): Silicon drip fertigation improved sugar beet root and canopy growth and alleviated water deficit stress in arid areas

Arid

DOI	10.1016/j.eja.2024.127236
	Silicon drip fertigation improved sugar beet root and canopy growth and alleviated water deficit stress in arid areas
	Zhou, Hongliang; Wang, Le; Xu, Pengjie; Liu, Dongfei; Hao, Yuchen; Wang, Kaiyong; Fan, Hua
通讯作者	Wang, KY ; Fan, H
来源期刊	EUROPEAN JOURNAL OF AGRONOMY
ISSN	1161-0301
EISSN	1873-7331
出版年	2024
卷号	159
英文摘要	Crop growth is highly susceptible to drought stress due to water scarcity in arid areas. Silicon (Si) fertilizer could improve the tolerance of crops to drought stress, but the effect of drip fertigation of Si fertilizer on the growth and yield of sugar beets under drought stress is still unclear. In this field experiment conducted in 2022 and 2023 in the arid northwest China, the effects of different Si fertilizer application rates (0 kg ha -1 (Si0), 15 kg ha -1 (Si1), 38 kg ha -1 (Si2), 75 kg ha -1 (Si3)) on the growth, yield, and resource use efficiency of sugar beets (cultivars Beta356 (BT) and Strube13092 (ST)) under deficit irrigation (60 % of crop evapotranspiration (ETc), W2) were explored. The results showed that deficit irrigation (W2Si0) reduced the taproot and fibrous root growth, leaf net photosynthetic rate (Pn), leaf relative water content (LRWC), and leaf area index (LAI) of cultivar BT compared with full irrigation (100 % of ETc, W1). Under deficit irrigation, Si application (W2Si1, W2Si2, and W2Si3) alleviated the drought stress by increasing the number of fibrous roots in 17.5 -70.0 cm soil layer and promoted the growth of taproots. Besides, it also increased the leaf moisture and photoassimilate production by increasing plant Si uptake, LRWC, LAI, and Pn. This finally increased the taproot yield (TY), irrigation water use efficiency (IWUE), and partial factor productivity of nitrogen (PFPN) by 11.2 %22.9 %, 6.5 %19.3 %, and 6.3 %19.3 %, respectively in cultivar BT and by 8.8 %27.1 %, 13.4 %30.8 %, and 13.4 %30.8 %, respectively in cultivar ST, compared with W2Si0. Regression analysis showed that the Si fertilizer application rate 64 kg ha -1 could maximize the TY of cultivar BT, but the net revenue (NR) was significantly lower than that of the W1 treatment. The Si fertilizer application rate 71 kg ha -1 could increase the TY of cultivar ST and achieve a NR similar to that of the W1 treatment. Therefore, in arid regions, Si application could alleviate the adverse effects of drought stress on drip-irrigated sugar beet root and shoot growth and improve yield, but the Si application rate varied with sugar beet cultivars.
英文关键词	Water deficit Fibrous roots Silicon fertilizers Resource use efficiency
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001258914100001
WOS关键词	PLANT ; TOLERANCE ; IRRIGATION
WOS类目	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/2XILL650/403695
推荐引用方式 GB/T 7714	Zhou, Hongliang,Wang, Le,Xu, Pengjie,et al. Silicon drip fertigation improved sugar beet root and canopy growth and alleviated water deficit stress in arid areas[J],2024,159.
APA	Zhou, Hongliang.,Wang, Le.,Xu, Pengjie.,Liu, Dongfei.,Hao, Yuchen.,...&Fan, Hua.(2024).Silicon drip fertigation improved sugar beet root and canopy growth and alleviated water deficit stress in arid areas.EUROPEAN JOURNAL OF AGRONOMY,159.
MLA	Zhou, Hongliang,et al."Silicon drip fertigation improved sugar beet root and canopy growth and alleviated water deficit stress in arid areas".EUROPEAN JOURNAL OF AGRONOMY 159(2024).