干旱区生态环境知识资源中心(Arid): A comprehensive evaluation of the optimum amount of phosphate fertilizer for drip irrigation of cotton under mulch based on root morphology, physiology, and mycorrhizal symbiosis

Arid

DOI	10.1016/j.still.2024.106276
	A comprehensive evaluation of the optimum amount of phosphate fertilizer for drip irrigation of cotton under mulch based on root morphology, physiology, and mycorrhizal symbiosis
	Chen, Bolang; Ye, Zupeng; Tang, Xuexia; Chai, Zhongping; Ma, Yue; Sheng, Jiandong; Feng, Gu
通讯作者	Chen, BL
来源期刊	SOIL & TILLAGE RESEARCH
ISSN	0167-1987
EISSN	1879-3444
出版年	2024
卷号	244
英文摘要	Cotton (Gossypium hirsutum L.) has been a valuable economic crop in arid Xinjiang, whose cotton production accounts for 90.2 % of the grand total in China. Low phosphorus (P) bioavailability brings severe restrictions for cotton production in arid regions as a result of P precipitation caused by high soil pH and Ca2+ 2+ content. Therefore, how to utilize the biological potential to improve the efficiency of P utilization has become a hotspot for international research.To learn more about P bioavailability in cotton from the perspectives of root morphology, rhizosphere physiology, and mycorrhizal association, especially the synergistic effect of these three under the optimal P input on P bioavailability. A 2-year, split-plot field experiment was conducted consecutively from 2016 to 2017, in which the main plots contained three cotton varieties (XLZ57, XLZ19, and XLZ13) and the subplots were treated with five P levels (0, 75, 150, 300, and 450 kg P2O5 2 O 5 ha- 1 ). Optimal P input (P fertilizer application: 75-150 kg P2O5 2 O 5 ha- 1 or soil available P content in topsoil: 11-25 mg kg- 1 ) was found to not only improve the distribution of root system and mycorrhiza in soil but also promote the secretion of protons and alkaline phosphatase in the rhizosphere, leading to higher P uptake and cotton yield. Although high P input (300-450 kg P2O5 2 O 5 ha- 1 ) increased soil available P content, it inhibited root growth, mycorrhizal infection and phosphatase activity, thus reducing P uptake and product. To obtain a relatively high yield (5500-6500 kg ha- 1 unginned cotton) and high P accumulation (120-130 kg P2O5 2 O 5 ha- 1 ), an ideotype cotton root/rhizosphere should be characterized by high root length density (4-5 m 1000 cm-- 3 ), large hyphal density (15-18 m g-- 1 ), and greater exudation of protons and alkaline phosphatase (60-70 mu g g- 1 h- 1 ) in topsoil, as well as a large microbial P (MBP) value (25-28 mg kg-- 1 ).Compared to mycorrhizal symbiosis (reflected by hyphal density), rhizosphere secretion of protons and alkaline phosphatase (rhizosphere physiology) and root length density (architecture) pose greater contributions to higher rhizosphere P availability and cotton P uptake. Moreover, the rhizosphere process and P use efficiency (PUE) of the P-efficient cultivar (XLZ19) were higher compared to the P-inefficient one (XLZ13). The results suggest that maximizing root/rhizosphere efficiency under optimal P input may improve cotton productivity and P uptake efficiency in mulched cotton fertigation systems in arid and semi-arid areas.
英文关键词	Cotton Root Rhizosphere process Hyphal density Phosphorus uptake efficiency
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001303341700001
WOS关键词	PHOSPHORUS-USE EFFICIENCY ; ARBUSCULAR MYCORRHIZAS ; ACQUISITION EFFICIENCY ; GENOTYPIC DIFFERENCES ; ALUMINUM TOLERANCE ; GOSSYPIUM-HIRSUTUM ; PLASMA-MEMBRANE ; P AVAILABILITY ; SOIL ; PLANT
WOS类目	Soil Science
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/2XILL650/405653
推荐引用方式 GB/T 7714	Chen, Bolang,Ye, Zupeng,Tang, Xuexia,et al. A comprehensive evaluation of the optimum amount of phosphate fertilizer for drip irrigation of cotton under mulch based on root morphology, physiology, and mycorrhizal symbiosis[J],2024,244.
APA	Chen, Bolang.,Ye, Zupeng.,Tang, Xuexia.,Chai, Zhongping.,Ma, Yue.,...&Feng, Gu.(2024).A comprehensive evaluation of the optimum amount of phosphate fertilizer for drip irrigation of cotton under mulch based on root morphology, physiology, and mycorrhizal symbiosis.SOIL & TILLAGE RESEARCH,244.
MLA	Chen, Bolang,et al."A comprehensive evaluation of the optimum amount of phosphate fertilizer for drip irrigation of cotton under mulch based on root morphology, physiology, and mycorrhizal symbiosis".SOIL & TILLAGE RESEARCH 244(2024).