干旱区生态环境知识资源中心(Arid): Once-middle amount of straw interlayer enhances saline soil quality and sunflower yield in semi-arid regions of China: Evidence from a four-year experiment

Arid

DOI	10.1016/j.jenvman.2023.118530
	Once-middle amount of straw interlayer enhances saline soil quality and sunflower yield in semi-arid regions of China: Evidence from a four-year experiment
	Chang, Fangdi; Zhang, Hongyuan; Song, Jiashen; Yu, Ru; Zhang, Xia; Li, Haoruo; Wang, Jing; Kan, Zhengrong; Li, Yuyi
通讯作者	Li, YY
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN	0301-4797
EISSN	1095-8630
出版年	2023
卷号	344
英文摘要	Straw deep returning as an interlayer is a novel practice to enhance soil carbon and nutrients. However, the impact of applying various amounts of straw as an interlayer on soil quality still remain unclear in the saline soil. Therefore, a field experiment was carried out over four years (2015-2018) in Hetao Irrigation District, China. The aim was to evaluate the impact of four straw interlayer rates (i.e., 0, 6, 12, and 18 Mg ha-1) applied at 40 cm depth on soil quality index (SQI) and its relationship to sunflower yield in saline soil. Our results showed that, in comparison to no straw interlayer (CK), straw interlayers applied at rates of 6, 12, and 18 Mg ha-1 improved SQI on average by 2.0, 2.7, and 3.0 times in four years, respectively (p < 0.05). This suggested that straw deep returning as an interlayer improved SQI, especially for middle and high amounts (12 and 18 Mg ha-1). Partial least squares path model (PLSPM) illustrated that the improvement of SQI was due to the high-moisture and low-salt environment created by straw interlayer in the early two years (2015-2016), while the higher soil nutrients released from straw decomposition in the subsequent years (2017-2018). The improvement of SQI contributed to sunflower yield, which was related to the decrease of soil salinity, the increase of soil moisture, soil organic carbon (SOC), total nitrogen (TN), and available nutrients under straw interlayers. The sunflower yield was increased by 8.7-13.4% under straw interlayers (p < 0.05), following the order of 18 = 12 > 6 >0 Mg ha-1. The greater increment of yield was detected during the initial phase of burying straw interlayers, which indicated that straw as an interlayer played a more important role than nutrient supply from straw decomposition. The findings highlighted that appropriate straw return amount (i.e., 12 Mg ha-1) as an interlayer is an economic practice to benefit soil quality and crop yield synchronously in salt-affected soils.
英文关键词	Straw interlayer Soil quality index Sunflower yield Saline soil
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001049258500001
WOS关键词	ORGANIC-CARBON ; CROP YIELD ; WHEAT ; TILLAGE ; MANAGEMENT ; ROTATION ; RETURN
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/2XILL650/397289
推荐引用方式 GB/T 7714	Chang, Fangdi,Zhang, Hongyuan,Song, Jiashen,et al. Once-middle amount of straw interlayer enhances saline soil quality and sunflower yield in semi-arid regions of China: Evidence from a four-year experiment[J],2023,344.
APA	Chang, Fangdi.,Zhang, Hongyuan.,Song, Jiashen.,Yu, Ru.,Zhang, Xia.,...&Li, Yuyi.(2023).Once-middle amount of straw interlayer enhances saline soil quality and sunflower yield in semi-arid regions of China: Evidence from a four-year experiment.JOURNAL OF ENVIRONMENTAL MANAGEMENT,344.
MLA	Chang, Fangdi,et al."Once-middle amount of straw interlayer enhances saline soil quality and sunflower yield in semi-arid regions of China: Evidence from a four-year experiment".JOURNAL OF ENVIRONMENTAL MANAGEMENT 344(2023).